added some basic functionality needed by the new face module (moved from the old "contrib")

modules/core/include/opencv2/core.hpp

@@ -690,7 +690,61 @@ public:
     Mat mean; //!< mean value subtracted before the projection and added after the back projection
 };
 
+// Linear Discriminant Analysis
+class CV_EXPORTS LDA
+{
+public:
+    // Initializes a LDA with num_components (default 0) and specifies how
+    // samples are aligned (default dataAsRow=true).
+    explicit LDA(int num_components = 0);
 
+    // Initializes and performs a Discriminant Analysis with Fisher's
+    // Optimization Criterion on given data in src and corresponding labels
+    // in labels. If 0 (or less) number of components are given, they are
+    // automatically determined for given data in computation.
+    LDA(InputArrayOfArrays src, InputArray labels, int num_components = 0);
+
+    // Serializes this object to a given filename.
+    void save(const String& filename) const;
+
+    // Deserializes this object from a given filename.
+    void load(const String& filename);
+
+    // Serializes this object to a given cv::FileStorage.
+    void save(FileStorage& fs) const;
+
+        // Deserializes this object from a given cv::FileStorage.
+    void load(const FileStorage& node);
+
+    // Destructor.
+    ~LDA();
+
+    //! Compute the discriminants for data in src and labels.
+    void compute(InputArrayOfArrays src, InputArray labels);
+
+    // Projects samples into the LDA subspace.
+    Mat project(InputArray src);
+
+    // Reconstructs projections from the LDA subspace.
+    Mat reconstruct(InputArray src);
+
+    // Returns the eigenvectors of this LDA.
+    Mat eigenvectors() const { return _eigenvectors; }
+
+    // Returns the eigenvalues of this LDA.
+    Mat eigenvalues() const { return _eigenvalues; }
+
+    static Mat subspaceProject(InputArray W, InputArray mean, InputArray src);
+    static Mat subspaceReconstruct(InputArray W, InputArray mean, InputArray src);
+
+protected:
+    bool _dataAsRow;
+    int _num_components;
+    Mat _eigenvectors;
+    Mat _eigenvalues;
+
+    void lda(InputArrayOfArrays src, InputArray labels);
+};
 
 /*!
     Singular Value Decomposition class

modules/core/src/matmul.cpp

@@ -3295,7 +3295,6 @@ void cv::PCABackProject(InputArray data, InputArray mean,
     pca.backProject(data, result);
 }
 
-
 /****************************************************************************************\
 *                                    Earlier API                                         *
 \****************************************************************************************/

modules/imgproc/doc/colormaps.rst

@@ -0,0 +1,107 @@
+ColorMaps in OpenCV
+===================
+
+applyColorMap
+---------------------
+
+Applies a GNU Octave/MATLAB equivalent colormap on a given image.
+
+.. ocv:function:: void applyColorMap(InputArray src, OutputArray dst, int colormap)
+
+    :param src: The source image, grayscale or colored does not matter.
+    :param dst: The result is the colormapped source image. Note: :ocv:func:`Mat::create` is called on dst.
+    :param colormap: The colormap to apply, see the list of available colormaps below.
+
+Currently the following GNU Octave/MATLAB equivalent colormaps are implemented:
+
+.. code-block:: cpp
+
+    enum
+    {
+        COLORMAP_AUTUMN = 0,
+        COLORMAP_BONE = 1,
+        COLORMAP_JET = 2,
+        COLORMAP_WINTER = 3,
+        COLORMAP_RAINBOW = 4,
+        COLORMAP_OCEAN = 5,
+        COLORMAP_SUMMER = 6,
+        COLORMAP_SPRING = 7,
+        COLORMAP_COOL = 8,
+        COLORMAP_HSV = 9,
+        COLORMAP_PINK = 10,
+        COLORMAP_HOT = 11
+    }
+
+
+Description
+-----------
+
+The human perception isn't built for observing fine changes in grayscale images. Human eyes are more sensitive to observing changes between colors, so you often need to recolor your grayscale images to get a clue about them. OpenCV now comes with various colormaps to enhance the visualization in your computer vision application.
+
+In OpenCV 2.4 you only need :ocv:func:`applyColorMap` to apply a colormap on a given image. The following sample code reads the path to an image from command line, applies a Jet colormap on it and shows the result:
+
+.. code-block:: cpp
+
+    #include <opencv2/contrib.hpp>
+    #include <opencv2/core.hpp>
+    #include <opencv2/highgui.hpp>
+
+    using namespace cv;
+
+    int main(int argc, const char *argv[]) {
+        // Get the path to the image, if it was given
+        // if no arguments were given.
+        String filename;
+        if (argc > 1) {
+            filename = String(argv[1]);
+        }
+        // The following lines show how to apply a colormap on a given image
+        // and show it with cv::imshow example with an image. An exception is
+        // thrown if the path to the image is invalid.
+        if(!filename.empty()) {
+            Mat img0 = imread(filename);
+            // Throw an exception, if the image can't be read:
+            if(img0.empty()) {
+                CV_Error(CV_StsBadArg, "Sample image is empty. Please adjust your path, so it points to a valid input image!");
+            }
+            // Holds the colormap version of the image:
+            Mat cm_img0;
+            // Apply the colormap:
+            applyColorMap(img0, cm_img0, COLORMAP_JET);
+            // Show the result:
+            imshow("cm_img0", cm_img0);
+            waitKey(0);
+        }
+
+        return 0;
+    }
+
+And here are the color scales for each of the available colormaps:
+
++-----------------------+---------------------------------------------------+
+| Class                 | Scale                                             |
++=======================+===================================================+
+| COLORMAP_AUTUMN       | .. image:: pics/colormaps/colorscale_autumn.jpg    |
++-----------------------+---------------------------------------------------+
+| COLORMAP_BONE         | .. image:: pics/colormaps/colorscale_bone.jpg      |
++-----------------------+---------------------------------------------------+
+| COLORMAP_COOL         | .. image:: pics/colormaps/colorscale_cool.jpg      |
++-----------------------+---------------------------------------------------+
+| COLORMAP_HOT          | .. image:: pics/colormaps/colorscale_hot.jpg       |
++-----------------------+---------------------------------------------------+
+| COLORMAP_HSV          | .. image:: pics/colormaps/colorscale_hsv.jpg       |
++-----------------------+---------------------------------------------------+
+| COLORMAP_JET          | .. image:: pics/colormaps/colorscale_jet.jpg       |
++-----------------------+---------------------------------------------------+
+| COLORMAP_OCEAN        | .. image:: pics/colormaps/colorscale_ocean.jpg     |
++-----------------------+---------------------------------------------------+
+| COLORMAP_PINK         | .. image:: pics/colormaps/colorscale_pink.jpg      |
++-----------------------+---------------------------------------------------+
+| COLORMAP_RAINBOW      | .. image:: pics/colormaps/colorscale_rainbow.jpg   |
++-----------------------+---------------------------------------------------+
+| COLORMAP_SPRING       | .. image:: pics/colormaps/colorscale_spring.jpg    |
++-----------------------+---------------------------------------------------+
+| COLORMAP_SUMMER       | .. image:: pics/colormaps/colorscale_summer.jpg    |
++-----------------------+---------------------------------------------------+
+| COLORMAP_WINTER       | .. image:: pics/colormaps/colorscale_winter.jpg    |
++-----------------------+---------------------------------------------------+

modules/imgproc/doc/imgproc.rst

@@ -10,6 +10,7 @@ imgproc. Image Processing
     filtering
     geometric_transformations
     miscellaneous_transformations
+    colormaps
     histograms
     structural_analysis_and_shape_descriptors
     motion_analysis_and_object_tracking

modules/imgproc/include/opencv2/imgproc.hpp

@@ -1518,6 +1518,24 @@ CV_EXPORTS Ptr<GeneralizedHoughGuil> createGeneralizedHoughGuil();
 //! Performs linear blending of two images
 CV_EXPORTS void blendLinear(InputArray src1, InputArray src2, InputArray weights1, InputArray weights2, OutputArray dst);
 
+enum
+{
+    COLORMAP_AUTUMN = 0,
+    COLORMAP_BONE = 1,
+    COLORMAP_JET = 2,
+    COLORMAP_WINTER = 3,
+    COLORMAP_RAINBOW = 4,
+    COLORMAP_OCEAN = 5,
+    COLORMAP_SUMMER = 6,
+    COLORMAP_SPRING = 7,
+    COLORMAP_COOL = 8,
+    COLORMAP_HSV = 9,
+    COLORMAP_PINK = 10,
+    COLORMAP_HOT = 11
+};
+
+CV_EXPORTS_W void applyColorMap(InputArray src, OutputArray dst, int colormap);
+
 } // cv
 
 #endif

modules/imgproc/src/colormap.cpp

@@ -0,0 +1,530 @@
+/*
+ * Copyright (c) 2011. Philipp Wagner <bytefish[at]gmx[dot]de>.
+ * Released to public domain under terms of the BSD Simplified license.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of the organization nor the names of its contributors
+ *     may be used to endorse or promote products derived from this software
+ *     without specific prior written permission.
+ *
+ *   See <http://www.opensource.org/licenses/bsd-license>
+ */
+#include "precomp.hpp"
+#include <iostream>
+
+#ifdef _MSC_VER
+#pragma warning( disable: 4305 )
+#endif
+
+namespace cv
+{
+
+static Mat linspace(float x0, float x1, int n)
+{
+    Mat pts(n, 1, CV_32FC1);
+    float step = (x1-x0)/(n-1);
+    for(int i = 0; i < n; i++)
+        pts.at<float>(i,0) = x0+i*step;
+    return pts;
+}
+
+//------------------------------------------------------------------------------
+// cv::sortMatrixRowsByIndices
+//------------------------------------------------------------------------------
+static void sortMatrixRowsByIndices(InputArray _src, InputArray _indices, OutputArray _dst)
+{
+    if(_indices.getMat().type() != CV_32SC1)
+        CV_Error(Error::StsUnsupportedFormat, "cv::sortRowsByIndices only works on integer indices!");
+    Mat src = _src.getMat();
+    std::vector<int> indices = _indices.getMat();
+    _dst.create(src.rows, src.cols, src.type());
+    Mat dst = _dst.getMat();
+    for(size_t idx = 0; idx < indices.size(); idx++) {
+        Mat originalRow = src.row(indices[idx]);
+        Mat sortedRow = dst.row((int)idx);
+        originalRow.copyTo(sortedRow);
+    }
+}
+
+static Mat sortMatrixRowsByIndices(InputArray src, InputArray indices)
+{
+    Mat dst;
+    sortMatrixRowsByIndices(src, indices, dst);
+    return dst;
+}
+
+
+static Mat argsort(InputArray _src, bool ascending=true)
+{
+    Mat src = _src.getMat();
+    if (src.rows != 1 && src.cols != 1)
+        CV_Error(Error::StsBadArg, "cv::argsort only sorts 1D matrices.");
+    int flags = SORT_EVERY_ROW | (ascending ? SORT_ASCENDING : SORT_DESCENDING);
+    Mat sorted_indices;
+    sortIdx(src.reshape(1,1),sorted_indices,flags);
+    return sorted_indices;
+}
+
+template <typename _Tp> static
+Mat interp1_(const Mat& X_, const Mat& Y_, const Mat& XI)
+{
+    int n = XI.rows;
+    // sort input table
+    std::vector<int> sort_indices = argsort(X_);
+
+    Mat X = sortMatrixRowsByIndices(X_,sort_indices);
+    Mat Y = sortMatrixRowsByIndices(Y_,sort_indices);
+    // interpolated values
+    Mat yi = Mat::zeros(XI.size(), XI.type());
+    for(int i = 0; i < n; i++) {
+        int c = 0;
+        int low = 0;
+        int high = X.rows - 1;
+        // set bounds
+        if(XI.at<_Tp>(i,0) < X.at<_Tp>(low, 0))
+            high = 1;
+        if(XI.at<_Tp>(i,0) > X.at<_Tp>(high, 0))
+            low = high - 1;
+        // binary search
+        while((high-low)>1) {
+            c = low + ((high - low) >> 1);
+            if(XI.at<_Tp>(i,0) > X.at<_Tp>(c,0)) {
+                low = c;
+            } else {
+                high = c;
+            }
+        }
+        // linear interpolation
+        yi.at<_Tp>(i,0) += Y.at<_Tp>(low,0)
+        + (XI.at<_Tp>(i,0) - X.at<_Tp>(low,0))
+        * (Y.at<_Tp>(high,0) - Y.at<_Tp>(low,0))
+        / (X.at<_Tp>(high,0) - X.at<_Tp>(low,0));
+    }
+    return yi;
+}
+
+static Mat interp1(InputArray _x, InputArray _Y, InputArray _xi)
+{
+    // get matrices
+    Mat x = _x.getMat();
+    Mat Y = _Y.getMat();
+    Mat xi = _xi.getMat();
+    // check types & alignment
+    CV_Assert((x.type() == Y.type()) && (Y.type() == xi.type()));
+    CV_Assert((x.cols == 1) && (x.rows == Y.rows) && (x.cols == Y.cols));
+    // call templated interp1
+    switch(x.type()) {
+        case CV_8SC1: return interp1_<char>(x,Y,xi); break;
+        case CV_8UC1: return interp1_<unsigned char>(x,Y,xi); break;
+        case CV_16SC1: return interp1_<short>(x,Y,xi); break;
+        case CV_16UC1: return interp1_<unsigned short>(x,Y,xi); break;
+        case CV_32SC1: return interp1_<int>(x,Y,xi); break;
+        case CV_32FC1: return interp1_<float>(x,Y,xi); break;
+        case CV_64FC1: return interp1_<double>(x,Y,xi); break;
+        default: CV_Error(Error::StsUnsupportedFormat, ""); break;
+    }
+    return Mat();
+}
+
+namespace colormap
+{
+
+    class ColorMap {
+
+    protected:
+        Mat _lut;
+
+    public:
+        virtual ~ColorMap() {}
+
+        // Applies the colormap on a given image.
+        //
+        // This function expects BGR-aligned data of type CV_8UC1 or
+        // CV_8UC3. If the wrong image type is given, the original image
+        // will be returned.
+        //
+        // Throws an error for wrong-aligned lookup table, which must be
+        // of size 256 in the latest OpenCV release (2.3.1).
+        void operator()(InputArray src, OutputArray dst) const;
+
+        // Setup base map to interpolate from.
+        virtual void init(int n) = 0;
+
+        // Interpolates from a base colormap.
+        static Mat linear_colormap(InputArray X,
+                InputArray r, InputArray g, InputArray b,
+                int n) {
+            return linear_colormap(X,r,g,b,linspace(0,1,n));
+        }
+
+        // Interpolates from a base colormap.
+        static Mat linear_colormap(InputArray X,
+                InputArray r, InputArray g, InputArray b,
+                float begin, float end, float n) {
+            return linear_colormap(X,r,g,b,linspace(begin,end, cvRound(n)));
+        }
+
+        // Interpolates from a base colormap.
+        static Mat linear_colormap(InputArray X,
+                InputArray r, InputArray g, InputArray b,
+                InputArray xi);
+    };
+
+    // Equals the GNU Octave colormap "autumn".
+    class Autumn : public ColorMap {
+    public:
+        Autumn() : ColorMap() {
+            init(256);
+        }
+
+        Autumn(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+            float g[] = { 0, 0.01587301587301587, 0.03174603174603174, 0.04761904761904762, 0.06349206349206349, 0.07936507936507936, 0.09523809523809523, 0.1111111111111111, 0.126984126984127, 0.1428571428571428, 0.1587301587301587, 0.1746031746031746, 0.1904761904761905, 0.2063492063492063, 0.2222222222222222, 0.2380952380952381, 0.253968253968254, 0.2698412698412698, 0.2857142857142857, 0.3015873015873016, 0.3174603174603174, 0.3333333333333333, 0.3492063492063492, 0.3650793650793651, 0.3809523809523809, 0.3968253968253968, 0.4126984126984127, 0.4285714285714285, 0.4444444444444444, 0.4603174603174603, 0.4761904761904762, 0.492063492063492, 0.5079365079365079, 0.5238095238095238, 0.5396825396825397, 0.5555555555555556, 0.5714285714285714, 0.5873015873015873, 0.6031746031746031, 0.6190476190476191, 0.6349206349206349, 0.6507936507936508, 0.6666666666666666, 0.6825396825396826, 0.6984126984126984, 0.7142857142857143, 0.7301587301587301, 0.746031746031746, 0.7619047619047619, 0.7777777777777778, 0.7936507936507936, 0.8095238095238095, 0.8253968253968254, 0.8412698412698413, 0.8571428571428571, 0.873015873015873, 0.8888888888888888, 0.9047619047619048, 0.9206349206349206, 0.9365079365079365, 0.9523809523809523, 0.9682539682539683, 0.9841269841269841, 1};
+            float b[] = {  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "bone".
+    class Bone : public ColorMap {
+    public:
+        Bone() : ColorMap() {
+            init(256);
+        }
+
+        Bone(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 0, 0.01388888888888889, 0.02777777777777778, 0.04166666666666666, 0.05555555555555555, 0.06944444444444445, 0.08333333333333333, 0.09722222222222221, 0.1111111111111111, 0.125, 0.1388888888888889, 0.1527777777777778, 0.1666666666666667, 0.1805555555555556, 0.1944444444444444, 0.2083333333333333, 0.2222222222222222, 0.2361111111111111, 0.25, 0.2638888888888889, 0.2777777777777778, 0.2916666666666666, 0.3055555555555555, 0.3194444444444444, 0.3333333333333333, 0.3472222222222222, 0.3611111111111111, 0.375, 0.3888888888888888, 0.4027777777777777, 0.4166666666666666, 0.4305555555555555, 0.4444444444444444, 0.4583333333333333, 0.4722222222222222, 0.4861111111111112, 0.5, 0.5138888888888888, 0.5277777777777778, 0.5416666666666667, 0.5555555555555556, 0.5694444444444444, 0.5833333333333333, 0.5972222222222222, 0.611111111111111, 0.6249999999999999, 0.6388888888888888, 0.6527777777777778, 0.6726190476190474, 0.6944444444444442, 0.7162698412698412, 0.7380952380952381, 0.7599206349206349, 0.7817460317460316, 0.8035714285714286, 0.8253968253968254, 0.8472222222222221, 0.8690476190476188, 0.8908730158730158, 0.9126984126984128, 0.9345238095238095, 0.9563492063492063, 0.978174603174603, 1};
+            float g[] = { 0, 0.01388888888888889, 0.02777777777777778, 0.04166666666666666, 0.05555555555555555, 0.06944444444444445, 0.08333333333333333, 0.09722222222222221, 0.1111111111111111, 0.125, 0.1388888888888889, 0.1527777777777778, 0.1666666666666667, 0.1805555555555556, 0.1944444444444444, 0.2083333333333333, 0.2222222222222222, 0.2361111111111111, 0.25, 0.2638888888888889, 0.2777777777777778, 0.2916666666666666, 0.3055555555555555, 0.3194444444444444, 0.3353174603174602, 0.3544973544973544, 0.3736772486772486, 0.3928571428571428, 0.412037037037037, 0.4312169312169312, 0.4503968253968254, 0.4695767195767195, 0.4887566137566137, 0.5079365079365078, 0.5271164021164021, 0.5462962962962963, 0.5654761904761904, 0.5846560846560845, 0.6038359788359787, 0.623015873015873, 0.6421957671957671, 0.6613756613756612, 0.6805555555555555, 0.6997354497354497, 0.7189153439153438, 0.7380952380952379, 0.7572751322751322, 0.7764550264550264, 0.7916666666666666, 0.8055555555555555, 0.8194444444444444, 0.8333333333333334, 0.8472222222222222, 0.861111111111111, 0.875, 0.8888888888888888, 0.9027777777777777, 0.9166666666666665, 0.9305555555555555, 0.9444444444444444, 0.9583333333333333, 0.9722222222222221, 0.986111111111111, 1};
+            float b[] = { 0, 0.01917989417989418, 0.03835978835978836, 0.05753968253968253, 0.07671957671957672, 0.09589947089947089, 0.1150793650793651, 0.1342592592592592, 0.1534391534391534, 0.1726190476190476, 0.1917989417989418, 0.210978835978836, 0.2301587301587301, 0.2493386243386243, 0.2685185185185185, 0.2876984126984127, 0.3068783068783069, 0.326058201058201, 0.3452380952380952, 0.3644179894179894, 0.3835978835978835, 0.4027777777777777, 0.4219576719576719, 0.4411375661375661, 0.4583333333333333, 0.4722222222222222, 0.4861111111111111, 0.5, 0.5138888888888888, 0.5277777777777777, 0.5416666666666666, 0.5555555555555556, 0.5694444444444444, 0.5833333333333333, 0.5972222222222222, 0.6111111111111112, 0.625, 0.6388888888888888, 0.6527777777777778, 0.6666666666666667, 0.6805555555555556, 0.6944444444444444, 0.7083333333333333, 0.7222222222222222, 0.736111111111111, 0.7499999999999999, 0.7638888888888888, 0.7777777777777778, 0.7916666666666666, 0.8055555555555555, 0.8194444444444444, 0.8333333333333334, 0.8472222222222222, 0.861111111111111, 0.875, 0.8888888888888888, 0.9027777777777777, 0.9166666666666665, 0.9305555555555555, 0.9444444444444444, 0.9583333333333333, 0.9722222222222221, 0.986111111111111, 1};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+
+
+
+    // Equals the GNU Octave colormap "jet".
+    class Jet : public ColorMap {
+
+    public:
+        Jet() {
+            init(256);
+        }
+        Jet(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            // breakpoints
+            Mat X = linspace(0,1,256);
+            // define the basemap
+            float r[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.00588235294117645,0.02156862745098032,0.03725490196078418,0.05294117647058827,0.06862745098039214,0.084313725490196,0.1000000000000001,0.115686274509804,0.1313725490196078,0.1470588235294117,0.1627450980392156,0.1784313725490196,0.1941176470588235,0.2098039215686274,0.2254901960784315,0.2411764705882353,0.2568627450980392,0.2725490196078431,0.2882352941176469,0.303921568627451,0.3196078431372549,0.3352941176470587,0.3509803921568628,0.3666666666666667,0.3823529411764706,0.3980392156862744,0.4137254901960783,0.4294117647058824,0.4450980392156862,0.4607843137254901,0.4764705882352942,0.4921568627450981,0.5078431372549019,0.5235294117647058,0.5392156862745097,0.5549019607843135,0.5705882352941174,0.5862745098039217,0.6019607843137256,0.6176470588235294,0.6333333333333333,0.6490196078431372,0.664705882352941,0.6803921568627449,0.6960784313725492,0.7117647058823531,0.7274509803921569,0.7431372549019608,0.7588235294117647,0.7745098039215685,0.7901960784313724,0.8058823529411763,0.8215686274509801,0.8372549019607844,0.8529411764705883,0.8686274509803922,0.884313725490196,0.8999999999999999,0.9156862745098038,0.9313725490196076,0.947058823529412,0.9627450980392158,0.9784313725490197,0.9941176470588236,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0.9862745098039216,0.9705882352941178,0.9549019607843139,0.93921568627451,0.9235294117647062,0.9078431372549018,0.892156862745098,0.8764705882352941,0.8607843137254902,0.8450980392156864,0.8294117647058825,0.8137254901960786,0.7980392156862743,0.7823529411764705,0.7666666666666666,0.7509803921568627,0.7352941176470589,0.719607843137255,0.7039215686274511,0.6882352941176473,0.6725490196078434,0.6568627450980391,0.6411764705882352,0.6254901960784314,0.6098039215686275,0.5941176470588236,0.5784313725490198,0.5627450980392159,0.5470588235294116,0.5313725490196077,0.5156862745098039,0.5};
+            float g[] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0.001960784313725483,0.01764705882352935,0.03333333333333333,0.0490196078431373,0.06470588235294117,0.08039215686274503,0.09607843137254901,0.111764705882353,0.1274509803921569,0.1431372549019607,0.1588235294117647,0.1745098039215687,0.1901960784313725,0.2058823529411764,0.2215686274509804,0.2372549019607844,0.2529411764705882,0.2686274509803921,0.2843137254901961,0.3,0.3156862745098039,0.3313725490196078,0.3470588235294118,0.3627450980392157,0.3784313725490196,0.3941176470588235,0.4098039215686274,0.4254901960784314,0.4411764705882353,0.4568627450980391,0.4725490196078431,0.4882352941176471,0.503921568627451,0.5196078431372548,0.5352941176470587,0.5509803921568628,0.5666666666666667,0.5823529411764705,0.5980392156862746,0.6137254901960785,0.6294117647058823,0.6450980392156862,0.6607843137254901,0.6764705882352942,0.692156862745098,0.7078431372549019,0.723529411764706,0.7392156862745098,0.7549019607843137,0.7705882352941176,0.7862745098039214,0.8019607843137255,0.8176470588235294,0.8333333333333333,0.8490196078431373,0.8647058823529412,0.8803921568627451,0.8960784313725489,0.9117647058823528,0.9274509803921569,0.9431372549019608,0.9588235294117646,0.9745098039215687,0.9901960784313726,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0.9901960784313726,0.9745098039215687,0.9588235294117649,0.943137254901961,0.9274509803921571,0.9117647058823528,0.8960784313725489,0.8803921568627451,0.8647058823529412,0.8490196078431373,0.8333333333333335,0.8176470588235296,0.8019607843137253,0.7862745098039214,0.7705882352941176,0.7549019607843137,0.7392156862745098,0.723529411764706,0.7078431372549021,0.6921568627450982,0.6764705882352944,0.6607843137254901,0.6450980392156862,0.6294117647058823,0.6137254901960785,0.5980392156862746,0.5823529411764707,0.5666666666666669,0.5509803921568626,0.5352941176470587,0.5196078431372548,0.503921568627451,0.4882352941176471,0.4725490196078432,0.4568627450980394,0.4411764705882355,0.4254901960784316,0.4098039215686273,0.3941176470588235,0.3784313725490196,0.3627450980392157,0.3470588235294119,0.331372549019608,0.3156862745098041,0.2999999999999998,0.284313725490196,0.2686274509803921,0.2529411764705882,0.2372549019607844,0.2215686274509805,0.2058823529411766,0.1901960784313728,0.1745098039215689,0.1588235294117646,0.1431372549019607,0.1274509803921569,0.111764705882353,0.09607843137254912,0.08039215686274526,0.06470588235294139,0.04901960784313708,0.03333333333333321,0.01764705882352935,0.001960784313725483,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+            float b[] = {0.5,0.5156862745098039,0.5313725490196078,0.5470588235294118,0.5627450980392157,0.5784313725490196,0.5941176470588235,0.6098039215686275,0.6254901960784314,0.6411764705882352,0.6568627450980392,0.6725490196078432,0.6882352941176471,0.7039215686274509,0.7196078431372549,0.7352941176470589,0.7509803921568627,0.7666666666666666,0.7823529411764706,0.7980392156862746,0.8137254901960784,0.8294117647058823,0.8450980392156863,0.8607843137254902,0.8764705882352941,0.892156862745098,0.907843137254902,0.9235294117647059,0.9392156862745098,0.9549019607843137,0.9705882352941176,0.9862745098039216,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0.9941176470588236,0.9784313725490197,0.9627450980392158,0.9470588235294117,0.9313725490196079,0.915686274509804,0.8999999999999999,0.884313725490196,0.8686274509803922,0.8529411764705883,0.8372549019607844,0.8215686274509804,0.8058823529411765,0.7901960784313726,0.7745098039215685,0.7588235294117647,0.7431372549019608,0.7274509803921569,0.7117647058823531,0.696078431372549,0.6803921568627451,0.6647058823529413,0.6490196078431372,0.6333333333333333,0.6176470588235294,0.6019607843137256,0.5862745098039217,0.5705882352941176,0.5549019607843138,0.5392156862745099,0.5235294117647058,0.5078431372549019,0.4921568627450981,0.4764705882352942,0.4607843137254903,0.4450980392156865,0.4294117647058826,0.4137254901960783,0.3980392156862744,0.3823529411764706,0.3666666666666667,0.3509803921568628,0.335294117647059,0.3196078431372551,0.3039215686274508,0.2882352941176469,0.2725490196078431,0.2568627450980392,0.2411764705882353,0.2254901960784315,0.2098039215686276,0.1941176470588237,0.1784313725490199,0.1627450980392156,0.1470588235294117,0.1313725490196078,0.115686274509804,0.1000000000000001,0.08431372549019622,0.06862745098039236,0.05294117647058805,0.03725490196078418,0.02156862745098032,0.00588235294117645,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
+            // now build lookup table
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(256,1, CV_32FC1, r).clone(), // red
+                    Mat(256,1, CV_32FC1, g).clone(), // green
+                    Mat(256,1, CV_32FC1, b).clone(), // blue
+                    n);
+        }
+    };
+
+    // Equals the GNU Octave colormap "winter".
+    class Winter : public ColorMap {
+    public:
+        Winter() : ColorMap() {
+            init(256);
+        }
+
+        Winter(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = {0.0, 0.0,  0.0, 0.0,  0.0, 0.0,  0.0, 0.0,  0.0, 0.0,  0.0};
+            float g[] = {0.0, 0.1,  0.2, 0.3,  0.4, 0.5,  0.6, 0.7,  0.8, 0.9,  1.0};
+            float b[] = {1.0, 0.95, 0.9, 0.85, 0.8, 0.75, 0.7, 0.65, 0.6, 0.55, 0.5};
+            Mat X = linspace(0,1,11);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(11,1, CV_32FC1, r).clone(), // red
+                    Mat(11,1, CV_32FC1, g).clone(), // green
+                    Mat(11,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "rainbow".
+    class Rainbow : public ColorMap {
+    public:
+        Rainbow() : ColorMap() {
+            init(256);
+        }
+
+        Rainbow(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0.9365079365079367, 0.8571428571428572, 0.7777777777777777, 0.6984126984126986, 0.6190476190476191, 0.53968253968254, 0.4603174603174605, 0.3809523809523814, 0.3015873015873018, 0.2222222222222223, 0.1428571428571432, 0.06349206349206415, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.03174603174603208, 0.08465608465608465, 0.1375661375661377, 0.1904761904761907, 0.2433862433862437, 0.2962962962962963, 0.3492063492063493, 0.4021164021164023, 0.4550264550264553, 0.5079365079365079, 0.5608465608465609, 0.6137566137566139, 0.666666666666667};
+            float g[] = { 0, 0.03968253968253968, 0.07936507936507936, 0.119047619047619, 0.1587301587301587, 0.1984126984126984, 0.2380952380952381, 0.2777777777777778, 0.3174603174603174, 0.3571428571428571, 0.3968253968253968, 0.4365079365079365, 0.4761904761904762, 0.5158730158730158, 0.5555555555555556, 0.5952380952380952, 0.6349206349206349, 0.6746031746031745, 0.7142857142857142, 0.753968253968254, 0.7936507936507936, 0.8333333333333333, 0.873015873015873, 0.9126984126984127, 0.9523809523809523, 0.992063492063492, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0.9841269841269842, 0.9047619047619047, 0.8253968253968256, 0.7460317460317465, 0.666666666666667, 0.587301587301587, 0.5079365079365079, 0.4285714285714288, 0.3492063492063493, 0.2698412698412698, 0.1904761904761907, 0.1111111111111116, 0.03174603174603208, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+            float b[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.01587301587301582, 0.09523809523809534, 0.1746031746031744, 0.2539682539682535, 0.333333333333333, 0.412698412698413, 0.4920634920634921, 0.5714285714285712, 0.6507936507936507, 0.7301587301587302, 0.8095238095238093, 0.8888888888888884, 0.9682539682539679, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "ocean".
+    class Ocean : public ColorMap {
+    public:
+        Ocean() : ColorMap() {
+            init(256);
+        }
+
+        Ocean(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.04761904761904762, 0.09523809523809523, 0.1428571428571428, 0.1904761904761905, 0.2380952380952381, 0.2857142857142857, 0.3333333333333333, 0.3809523809523809, 0.4285714285714285, 0.4761904761904762, 0.5238095238095238, 0.5714285714285714, 0.6190476190476191, 0.6666666666666666, 0.7142857142857143, 0.7619047619047619, 0.8095238095238095, 0.8571428571428571, 0.9047619047619048, 0.9523809523809523, 1};
+            float g[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.02380952380952381, 0.04761904761904762, 0.07142857142857142, 0.09523809523809523, 0.119047619047619, 0.1428571428571428, 0.1666666666666667, 0.1904761904761905, 0.2142857142857143, 0.2380952380952381, 0.2619047619047619, 0.2857142857142857, 0.3095238095238095, 0.3333333333333333, 0.3571428571428572, 0.3809523809523809, 0.4047619047619048, 0.4285714285714285, 0.4523809523809524, 0.4761904761904762, 0.5, 0.5238095238095238, 0.5476190476190477, 0.5714285714285714, 0.5952380952380952, 0.6190476190476191, 0.6428571428571429, 0.6666666666666666, 0.6904761904761905, 0.7142857142857143, 0.7380952380952381, 0.7619047619047619, 0.7857142857142857, 0.8095238095238095, 0.8333333333333334, 0.8571428571428571, 0.8809523809523809, 0.9047619047619048, 0.9285714285714286, 0.9523809523809523, 0.9761904761904762, 1};
+            float b[] = { 0, 0.01587301587301587, 0.03174603174603174, 0.04761904761904762, 0.06349206349206349, 0.07936507936507936, 0.09523809523809523, 0.1111111111111111, 0.126984126984127, 0.1428571428571428, 0.1587301587301587, 0.1746031746031746, 0.1904761904761905, 0.2063492063492063, 0.2222222222222222, 0.2380952380952381, 0.253968253968254, 0.2698412698412698, 0.2857142857142857, 0.3015873015873016, 0.3174603174603174, 0.3333333333333333, 0.3492063492063492, 0.3650793650793651, 0.3809523809523809, 0.3968253968253968, 0.4126984126984127, 0.4285714285714285, 0.4444444444444444, 0.4603174603174603, 0.4761904761904762, 0.492063492063492, 0.5079365079365079, 0.5238095238095238, 0.5396825396825397, 0.5555555555555556, 0.5714285714285714, 0.5873015873015873, 0.6031746031746031, 0.6190476190476191, 0.6349206349206349, 0.6507936507936508, 0.6666666666666666, 0.6825396825396826, 0.6984126984126984, 0.7142857142857143, 0.7301587301587301, 0.746031746031746, 0.7619047619047619, 0.7777777777777778, 0.7936507936507936, 0.8095238095238095, 0.8253968253968254, 0.8412698412698413, 0.8571428571428571, 0.873015873015873, 0.8888888888888888, 0.9047619047619048, 0.9206349206349206, 0.9365079365079365, 0.9523809523809523, 0.9682539682539683, 0.9841269841269841, 1};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "summer".
+    class Summer : public ColorMap {
+    public:
+        Summer() : ColorMap() {
+            init(256);
+        }
+
+        Summer(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 0, 0.01587301587301587, 0.03174603174603174, 0.04761904761904762, 0.06349206349206349, 0.07936507936507936, 0.09523809523809523, 0.1111111111111111, 0.126984126984127, 0.1428571428571428, 0.1587301587301587, 0.1746031746031746, 0.1904761904761905, 0.2063492063492063, 0.2222222222222222, 0.2380952380952381, 0.253968253968254, 0.2698412698412698, 0.2857142857142857, 0.3015873015873016, 0.3174603174603174, 0.3333333333333333, 0.3492063492063492, 0.3650793650793651, 0.3809523809523809, 0.3968253968253968, 0.4126984126984127, 0.4285714285714285, 0.4444444444444444, 0.4603174603174603, 0.4761904761904762, 0.492063492063492, 0.5079365079365079, 0.5238095238095238, 0.5396825396825397, 0.5555555555555556, 0.5714285714285714, 0.5873015873015873, 0.6031746031746031, 0.6190476190476191, 0.6349206349206349, 0.6507936507936508, 0.6666666666666666, 0.6825396825396826, 0.6984126984126984, 0.7142857142857143, 0.7301587301587301, 0.746031746031746, 0.7619047619047619, 0.7777777777777778, 0.7936507936507936, 0.8095238095238095, 0.8253968253968254, 0.8412698412698413, 0.8571428571428571, 0.873015873015873, 0.8888888888888888, 0.9047619047619048, 0.9206349206349206, 0.9365079365079365, 0.9523809523809523, 0.9682539682539683, 0.9841269841269841, 1};
+            float g[] = { 0.5, 0.5079365079365079, 0.5158730158730158, 0.5238095238095238, 0.5317460317460317, 0.5396825396825397, 0.5476190476190477, 0.5555555555555556, 0.5634920634920635, 0.5714285714285714, 0.5793650793650793, 0.5873015873015873, 0.5952380952380952, 0.6031746031746031, 0.6111111111111112, 0.6190476190476191, 0.626984126984127, 0.6349206349206349, 0.6428571428571428, 0.6507936507936508, 0.6587301587301587, 0.6666666666666666, 0.6746031746031746, 0.6825396825396826, 0.6904761904761905, 0.6984126984126984, 0.7063492063492063, 0.7142857142857143, 0.7222222222222222, 0.7301587301587301, 0.7380952380952381, 0.746031746031746, 0.753968253968254, 0.7619047619047619, 0.7698412698412698, 0.7777777777777778, 0.7857142857142857, 0.7936507936507937, 0.8015873015873016, 0.8095238095238095, 0.8174603174603174, 0.8253968253968254, 0.8333333333333333, 0.8412698412698413, 0.8492063492063492, 0.8571428571428572, 0.8650793650793651, 0.873015873015873, 0.8809523809523809, 0.8888888888888888, 0.8968253968253967, 0.9047619047619048, 0.9126984126984127, 0.9206349206349207, 0.9285714285714286, 0.9365079365079365, 0.9444444444444444, 0.9523809523809523, 0.9603174603174602, 0.9682539682539683, 0.9761904761904762, 0.9841269841269842, 0.9920634920634921, 1};
+            float b[] = { 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4, 0.4};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "spring".
+    class Spring : public ColorMap {
+    public:
+        Spring() : ColorMap() {
+            init(256);
+        }
+
+        Spring(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+            float g[] = { 0, 0.01587301587301587, 0.03174603174603174, 0.04761904761904762, 0.06349206349206349, 0.07936507936507936, 0.09523809523809523, 0.1111111111111111, 0.126984126984127, 0.1428571428571428, 0.1587301587301587, 0.1746031746031746, 0.1904761904761905, 0.2063492063492063, 0.2222222222222222, 0.2380952380952381, 0.253968253968254, 0.2698412698412698, 0.2857142857142857, 0.3015873015873016, 0.3174603174603174, 0.3333333333333333, 0.3492063492063492, 0.3650793650793651, 0.3809523809523809, 0.3968253968253968, 0.4126984126984127, 0.4285714285714285, 0.4444444444444444, 0.4603174603174603, 0.4761904761904762, 0.492063492063492, 0.5079365079365079, 0.5238095238095238, 0.5396825396825397, 0.5555555555555556, 0.5714285714285714, 0.5873015873015873, 0.6031746031746031, 0.6190476190476191, 0.6349206349206349, 0.6507936507936508, 0.6666666666666666, 0.6825396825396826, 0.6984126984126984, 0.7142857142857143, 0.7301587301587301, 0.746031746031746, 0.7619047619047619, 0.7777777777777778, 0.7936507936507936, 0.8095238095238095, 0.8253968253968254, 0.8412698412698413, 0.8571428571428571, 0.873015873015873, 0.8888888888888888, 0.9047619047619048, 0.9206349206349206, 0.9365079365079365, 0.9523809523809523, 0.9682539682539683, 0.9841269841269841, 1};
+            float b[] = { 1, 0.9841269841269842, 0.9682539682539683, 0.9523809523809523, 0.9365079365079365, 0.9206349206349207, 0.9047619047619048, 0.8888888888888888, 0.873015873015873, 0.8571428571428572, 0.8412698412698413, 0.8253968253968254, 0.8095238095238095, 0.7936507936507937, 0.7777777777777778, 0.7619047619047619, 0.746031746031746, 0.7301587301587302, 0.7142857142857143, 0.6984126984126984, 0.6825396825396826, 0.6666666666666667, 0.6507936507936508, 0.6349206349206349, 0.6190476190476191, 0.6031746031746033, 0.5873015873015873, 0.5714285714285714, 0.5555555555555556, 0.5396825396825398, 0.5238095238095238, 0.5079365079365079, 0.4920634920634921, 0.4761904761904762, 0.4603174603174603, 0.4444444444444444, 0.4285714285714286, 0.4126984126984127, 0.3968253968253969, 0.3809523809523809, 0.3650793650793651, 0.3492063492063492, 0.3333333333333334, 0.3174603174603174, 0.3015873015873016, 0.2857142857142857, 0.2698412698412699, 0.253968253968254, 0.2380952380952381, 0.2222222222222222, 0.2063492063492064, 0.1904761904761905, 0.1746031746031746, 0.1587301587301587, 0.1428571428571429, 0.126984126984127, 0.1111111111111112, 0.09523809523809523, 0.07936507936507942, 0.06349206349206349, 0.04761904761904767, 0.03174603174603174, 0.01587301587301593, 0};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "cool".
+    class Cool : public ColorMap {
+    public:
+        Cool() : ColorMap() {
+            init(256);
+        }
+
+        Cool(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 0, 0.01587301587301587, 0.03174603174603174, 0.04761904761904762, 0.06349206349206349, 0.07936507936507936, 0.09523809523809523, 0.1111111111111111, 0.126984126984127, 0.1428571428571428, 0.1587301587301587, 0.1746031746031746, 0.1904761904761905, 0.2063492063492063, 0.2222222222222222, 0.2380952380952381, 0.253968253968254, 0.2698412698412698, 0.2857142857142857, 0.3015873015873016, 0.3174603174603174, 0.3333333333333333, 0.3492063492063492, 0.3650793650793651, 0.3809523809523809, 0.3968253968253968, 0.4126984126984127, 0.4285714285714285, 0.4444444444444444, 0.4603174603174603, 0.4761904761904762, 0.492063492063492, 0.5079365079365079, 0.5238095238095238, 0.5396825396825397, 0.5555555555555556, 0.5714285714285714, 0.5873015873015873, 0.6031746031746031, 0.6190476190476191, 0.6349206349206349, 0.6507936507936508, 0.6666666666666666, 0.6825396825396826, 0.6984126984126984, 0.7142857142857143, 0.7301587301587301, 0.746031746031746, 0.7619047619047619, 0.7777777777777778, 0.7936507936507936, 0.8095238095238095, 0.8253968253968254, 0.8412698412698413, 0.8571428571428571, 0.873015873015873, 0.8888888888888888, 0.9047619047619048, 0.9206349206349206, 0.9365079365079365, 0.9523809523809523, 0.9682539682539683, 0.9841269841269841, 1};
+            float g[] = { 1, 0.9841269841269842, 0.9682539682539683, 0.9523809523809523, 0.9365079365079365, 0.9206349206349207, 0.9047619047619048, 0.8888888888888888, 0.873015873015873, 0.8571428571428572, 0.8412698412698413, 0.8253968253968254, 0.8095238095238095, 0.7936507936507937, 0.7777777777777778, 0.7619047619047619, 0.746031746031746, 0.7301587301587302, 0.7142857142857143, 0.6984126984126984, 0.6825396825396826, 0.6666666666666667, 0.6507936507936508, 0.6349206349206349, 0.6190476190476191, 0.6031746031746033, 0.5873015873015873, 0.5714285714285714, 0.5555555555555556, 0.5396825396825398, 0.5238095238095238, 0.5079365079365079, 0.4920634920634921, 0.4761904761904762, 0.4603174603174603, 0.4444444444444444, 0.4285714285714286, 0.4126984126984127, 0.3968253968253969, 0.3809523809523809, 0.3650793650793651, 0.3492063492063492, 0.3333333333333334, 0.3174603174603174, 0.3015873015873016, 0.2857142857142857, 0.2698412698412699, 0.253968253968254, 0.2380952380952381, 0.2222222222222222, 0.2063492063492064, 0.1904761904761905, 0.1746031746031746, 0.1587301587301587, 0.1428571428571429, 0.126984126984127, 0.1111111111111112, 0.09523809523809523, 0.07936507936507942, 0.06349206349206349, 0.04761904761904767, 0.03174603174603174, 0.01587301587301593, 0};
+            float b[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "hsv".
+    class HSV : public ColorMap {
+    public:
+        HSV() : ColorMap() {
+            init(256);
+        }
+
+        HSV(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0.9523809523809526, 0.8571428571428568, 0.7619047619047614, 0.6666666666666665, 0.5714285714285716, 0.4761904761904763, 0.3809523809523805, 0.2857142857142856, 0.1904761904761907, 0.0952380952380949, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.09523809523809557, 0.1904761904761905, 0.2857142857142854, 0.3809523809523809, 0.4761904761904765, 0.5714285714285714, 0.6666666666666663, 0.7619047619047619, 0.8571428571428574, 0.9523809523809523, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+            float g[] = { 0, 0.09523809523809523, 0.1904761904761905, 0.2857142857142857, 0.3809523809523809, 0.4761904761904762, 0.5714285714285714, 0.6666666666666666, 0.7619047619047619, 0.8571428571428571, 0.9523809523809523, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0.9523809523809526, 0.8571428571428577, 0.7619047619047619, 0.6666666666666665, 0.5714285714285716, 0.4761904761904767, 0.3809523809523814, 0.2857142857142856, 0.1904761904761907, 0.09523809523809579, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+            float b[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.09523809523809523, 0.1904761904761905, 0.2857142857142857, 0.3809523809523809, 0.4761904761904762, 0.5714285714285714, 0.6666666666666666, 0.7619047619047619, 0.8571428571428571, 0.9523809523809523, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0.9523809523809526, 0.8571428571428577, 0.7619047619047614, 0.6666666666666665, 0.5714285714285716, 0.4761904761904767, 0.3809523809523805, 0.2857142857142856, 0.1904761904761907, 0.09523809523809579, 0};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "pink".
+    class Pink : public ColorMap {
+    public:
+        Pink() : ColorMap() {
+            init(256);
+        }
+
+        Pink(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 0, 0.1571348402636772, 0.2222222222222222, 0.2721655269759087, 0.3142696805273544, 0.3513641844631533, 0.3849001794597505, 0.415739709641549, 0.4444444444444444, 0.4714045207910317, 0.4969039949999532, 0.5211573066470477, 0.5443310539518174, 0.5665577237325317, 0.5879447357921312, 0.6085806194501846, 0.6285393610547089, 0.6478835438717, 0.6666666666666666, 0.6849348892187751, 0.7027283689263065, 0.7200822998230956, 0.7370277311900888, 0.753592220347252, 0.7663560447348133, 0.7732293307186413, 0.7800420555749596, 0.7867957924694432, 0.7934920476158722, 0.8001322641986387, 0.8067178260046388, 0.8132500607904444, 0.8197302434079591, 0.8261595987094034, 0.8325393042503717, 0.8388704928078611, 0.8451542547285166, 0.8513916401208816, 0.8575836609041332, 0.8637312927246217, 0.8698354767504924, 0.8758971213537393, 0.8819171036881968, 0.8878962711712378, 0.8938354428762595, 0.8997354108424372, 0.9055969413076769, 0.9114207758701963, 0.9172076325837248, 0.9229582069908971, 0.9286731730990523, 0.9343531843023135, 0.9399988742535192, 0.9456108576893002, 0.9511897312113418, 0.9567360740266436, 0.9622504486493763, 0.9677334015667416, 0.9731854638710686, 0.9786071518602129, 0.9839989676081821, 0.9893613995077727, 0.9946949227868761, 1};
+            float g[] = { 0, 0.1028688999747279, 0.1454785934906616, 0.1781741612749496, 0.2057377999494559, 0.2300218531141181, 0.2519763153394848, 0.2721655269759087, 0.2909571869813232, 0.3086066999241838, 0.3253000243161777, 0.3411775438127727, 0.3563483225498992, 0.3708990935094579, 0.3849001794597505, 0.3984095364447979, 0.4114755998989117, 0.4241393401869012, 0.4364357804719847, 0.4483951394230328, 0.4600437062282361, 0.4714045207910317, 0.4824979096371639, 0.4933419132673033, 0.5091750772173156, 0.5328701692569688, 0.5555555555555556, 0.5773502691896257, 0.5983516452371671, 0.6186404847588913, 0.6382847385042254, 0.6573421981221795, 0.6758625033664688, 0.6938886664887108, 0.7114582486036499, 0.7286042804780002, 0.7453559924999299, 0.7617394000445604, 0.7777777777777778, 0.7934920476158723, 0.8089010988089465, 0.8240220541217402, 0.8388704928078611, 0.8534606386520677, 0.8678055195451838, 0.8819171036881968, 0.8958064164776166, 0.9094836413191612, 0.9172076325837248, 0.9229582069908971, 0.9286731730990523, 0.9343531843023135, 0.9399988742535192, 0.9456108576893002, 0.9511897312113418, 0.9567360740266436, 0.9622504486493763, 0.9677334015667416, 0.9731854638710686, 0.9786071518602129, 0.9839989676081821, 0.9893613995077727, 0.9946949227868761, 1};
+            float b[] = { 0, 0.1028688999747279, 0.1454785934906616, 0.1781741612749496, 0.2057377999494559, 0.2300218531141181, 0.2519763153394848, 0.2721655269759087, 0.2909571869813232, 0.3086066999241838, 0.3253000243161777, 0.3411775438127727, 0.3563483225498992, 0.3708990935094579, 0.3849001794597505, 0.3984095364447979, 0.4114755998989117, 0.4241393401869012, 0.4364357804719847, 0.4483951394230328, 0.4600437062282361, 0.4714045207910317, 0.4824979096371639, 0.4933419132673033, 0.5039526306789697, 0.5143444998736397, 0.5245305283129621, 0.5345224838248488, 0.5443310539518174, 0.5539659798925444, 0.563436169819011, 0.5727497953228163, 0.5819143739626463, 0.5909368402852788, 0.5998236072282915, 0.6085806194501846, 0.6172133998483676, 0.6257270902992705, 0.6341264874742278, 0.642416074439621, 0.6506000486323554, 0.6586823467062358, 0.6666666666666666, 0.6745564876468501, 0.6823550876255453, 0.6900655593423541, 0.6976908246297114, 0.7052336473499384, 0.7237468644557459, 0.7453559924999298, 0.7663560447348133, 0.7867957924694432, 0.8067178260046388, 0.8261595987094034, 0.8451542547285166, 0.8637312927246217, 0.8819171036881968, 0.8997354108424372, 0.9172076325837248, 0.9343531843023135, 0.9511897312113418, 0.9677334015667416, 0.9839989676081821, 1};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    // Equals the GNU Octave colormap "hot".
+    class Hot : public ColorMap {
+    public:
+        Hot() : ColorMap() {
+            init(256);
+        }
+
+        Hot(int n) : ColorMap() {
+            init(n);
+        }
+
+        void init(int n) {
+            float r[] = { 0, 0.03968253968253968, 0.07936507936507936, 0.119047619047619, 0.1587301587301587, 0.1984126984126984, 0.2380952380952381, 0.2777777777777778, 0.3174603174603174, 0.3571428571428571, 0.3968253968253968, 0.4365079365079365, 0.4761904761904762, 0.5158730158730158, 0.5555555555555556, 0.5952380952380952, 0.6349206349206349, 0.6746031746031745, 0.7142857142857142, 0.753968253968254, 0.7936507936507936, 0.8333333333333333, 0.873015873015873, 0.9126984126984127, 0.9523809523809523, 0.992063492063492, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+            float g[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.03174603174603163, 0.0714285714285714, 0.1111111111111112, 0.1507936507936507, 0.1904761904761905, 0.23015873015873, 0.2698412698412698, 0.3095238095238093, 0.3492063492063491, 0.3888888888888888, 0.4285714285714284, 0.4682539682539679, 0.5079365079365079, 0.5476190476190477, 0.5873015873015872, 0.6269841269841268, 0.6666666666666665, 0.7063492063492065, 0.746031746031746, 0.7857142857142856, 0.8253968253968254, 0.8650793650793651, 0.9047619047619047, 0.9444444444444442, 0.984126984126984, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+            float b[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0.04761904761904745, 0.1269841269841265, 0.2063492063492056, 0.2857142857142856, 0.3650793650793656, 0.4444444444444446, 0.5238095238095237, 0.6031746031746028, 0.6825396825396828, 0.7619047619047619, 0.8412698412698409, 0.92063492063492, 1};
+            Mat X = linspace(0,1,64);
+            this->_lut = ColorMap::linear_colormap(X,
+                    Mat(64,1, CV_32FC1, r).clone(), // red
+                    Mat(64,1, CV_32FC1, g).clone(), // green
+                    Mat(64,1, CV_32FC1, b).clone(), // blue
+                    n);  // number of sample points
+        }
+    };
+
+    void ColorMap::operator()(InputArray _src, OutputArray _dst) const
+    {
+        if(_lut.total() != 256)
+            CV_Error(Error::StsAssert, "cv::LUT only supports tables of size 256.");
+        Mat src = _src.getMat();
+        // Return original matrix if wrong type is given (is fail loud better here?)
+        if(src.type() != CV_8UC1 && src.type() != CV_8UC3)
+        {
+            src.copyTo(_dst);
+            return;
+        }
+        // Turn into a BGR matrix into its grayscale representation.
+        if(src.type() == CV_8UC3)
+            cvtColor(src.clone(), src, COLOR_BGR2GRAY);
+        cvtColor(src.clone(), src, COLOR_GRAY2BGR);
+        // Apply the ColorMap.
+        LUT(src, _lut, _dst);
+    }
+
+    Mat ColorMap::linear_colormap(InputArray X,
+            InputArray r, InputArray g, InputArray b,
+            InputArray xi) {
+        Mat lut, lut8;
+        Mat planes[] = {
+                interp1(X, b, xi),
+                interp1(X, g, xi),
+                interp1(X, r, xi)};
+        merge(planes, 3, lut);
+        lut.convertTo(lut8, CV_8U, 255.);
+        return lut8;
+    }
+
+    }
+
+    void applyColorMap(InputArray src, OutputArray dst, int colormap)
+    {
+        colormap::ColorMap* cm =
+            colormap == COLORMAP_AUTUMN ? (colormap::ColorMap*)(new colormap::Autumn) :
+            colormap == COLORMAP_BONE ? (colormap::ColorMap*)(new colormap::Bone) :
+            colormap == COLORMAP_COOL ? (colormap::ColorMap*)(new colormap::Cool) :
+            colormap == COLORMAP_HOT ? (colormap::ColorMap*)(new colormap::Hot) :
+            colormap == COLORMAP_HSV ? (colormap::ColorMap*)(new colormap::HSV) :
+            colormap == COLORMAP_JET ? (colormap::ColorMap*)(new colormap::Jet) :
+            colormap == COLORMAP_OCEAN ? (colormap::ColorMap*)(new colormap::Ocean) :
+            colormap == COLORMAP_PINK ? (colormap::ColorMap*)(new colormap::Pink) :
+            colormap == COLORMAP_RAINBOW ? (colormap::ColorMap*)(new colormap::Rainbow) :
+            colormap == COLORMAP_SPRING ? (colormap::ColorMap*)(new colormap::Spring) :
+            colormap == COLORMAP_SUMMER ? (colormap::ColorMap*)(new colormap::Summer) :
+            colormap == COLORMAP_WINTER ? (colormap::ColorMap*)(new colormap::Winter) : 0;
+
+        if( !cm )
+            CV_Error( Error::StsBadArg, "Unknown colormap id; use one of COLORMAP_*");
+
+        (*cm)(src, dst);
+
+        delete cm;
+    }
+}

modules/python/common.cmake

@@ -15,10 +15,10 @@ endforeach(mp)
 # module blacklist
 ocv_list_filterout(candidate_deps "^opencv_cud(a|ev)")
 ocv_list_filterout(candidate_deps "^opencv_adas$")
+ocv_list_filterout(candidate_deps "^opencv_face$")
 ocv_list_filterout(candidate_deps "^opencv_matlab$")
 ocv_list_filterout(candidate_deps "^opencv_tracking$")
 
-
 ocv_add_module(${MODULE_NAME} BINDINGS OPTIONAL ${candidate_deps})
 
 ocv_module_include_directories(