mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2024-12-18 11:28:02 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #2460 from berak:b_3598_24

Browse Source
This commit is contained in:
Roman Donchenko 2014-03-17 15:52:56 +04:00 committed by OpenCV Buildbot
commit a489d86e5f
2 changed files with 9 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

90
doc/tutorials/imgproc/histograms/histogram_comparison/histogram_comparison.rst
View File

@ -84,88 +84,10 @@ Code
* **Code at glance:** * **Code at glance:**
.. code-block:: cpp .. literalinclude:: ../../../../../samples/cpp/tutorial_code/Histograms_Matching/compareHist_Demo.cpp
:language: cpp
:tab-width: 4
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
#include <stdio.h>
using namespace std;
using namespace cv;
/** @function main */
int main( int argc, char** argv )
{
Mat src_base, hsv_base;
Mat src_test1, hsv_test1;
Mat src_test2, hsv_test2;
Mat hsv_half_down;
/// Load three images with different environment settings
if( argc < 4 )
{ printf("** Error. Usage: ./compareHist_Demo <image_settings0> <image_setting1> <image_settings2>\n");
return -1;
}
src_base = imread( argv[1], 1 );
src_test1 = imread( argv[2], 1 );
src_test2 = imread( argv[3], 1 );
/// Convert to HSV
cvtColor( src_base, hsv_base, CV_BGR2HSV );
cvtColor( src_test1, hsv_test1, CV_BGR2HSV );
cvtColor( src_test2, hsv_test2, CV_BGR2HSV );
hsv_half_down = hsv_base( Range( hsv_base.rows/2, hsv_base.rows - 1 ), Range( 0, hsv_base.cols - 1 ) );
/// Using 30 bins for hue and 32 for saturation
int h_bins = 50; int s_bins = 60;
int histSize[] = { h_bins, s_bins };
// hue varies from 0 to 256, saturation from 0 to 180
float h_ranges[] = { 0, 256 };
float s_ranges[] = { 0, 180 };
const float* ranges[] = { h_ranges, s_ranges };
// Use the o-th and 1-st channels
int channels[] = { 0, 1 };
/// Histograms
MatND hist_base;
MatND hist_half_down;
MatND hist_test1;
MatND hist_test2;
/// Calculate the histograms for the HSV images
calcHist( &hsv_base, 1, channels, Mat(), hist_base, 2, histSize, ranges, true, false );
normalize( hist_base, hist_base, 0, 1, NORM_MINMAX, -1, Mat() );
calcHist( &hsv_half_down, 1, channels, Mat(), hist_half_down, 2, histSize, ranges, true, false );
normalize( hist_half_down, hist_half_down, 0, 1, NORM_MINMAX, -1, Mat() );
calcHist( &hsv_test1, 1, channels, Mat(), hist_test1, 2, histSize, ranges, true, false );
normalize( hist_test1, hist_test1, 0, 1, NORM_MINMAX, -1, Mat() );
calcHist( &hsv_test2, 1, channels, Mat(), hist_test2, 2, histSize, ranges, true, false );
normalize( hist_test2, hist_test2, 0, 1, NORM_MINMAX, -1, Mat() );
/// Apply the histogram comparison methods
for( int i = 0; i < 4; i++ )
{ int compare_method = i;
double base_base = compareHist( hist_base, hist_base, compare_method );
double base_half = compareHist( hist_base, hist_half_down, compare_method );
double base_test1 = compareHist( hist_base, hist_test1, compare_method );
double base_test2 = compareHist( hist_base, hist_test2, compare_method );
printf( " Method [%d] Perfect, Base-Half, Base-Test(1), Base-Test(2) : %f, %f, %f, %f \n", i, base_base, base_half , base_test1, base_test2 );
}
printf( "Done \n" );
return 0;
}
Explanation Explanation
@ -211,11 +133,11 @@ Explanation
.. code-block:: cpp .. code-block:: cpp
int h_bins = 50; int s_bins = 32; int h_bins = 50; int s_bins = 60;
int histSize[] = { h_bins, s_bins }; int histSize[] = { h_bins, s_bins };
float h_ranges[] = { 0, 256 }; float h_ranges[] = { 0, 180 };
float s_ranges[] = { 0, 180 }; float s_ranges[] = { 0, 256 };
const float* ranges[] = { h_ranges, s_ranges }; const float* ranges[] = { h_ranges, s_ranges };

6
samples/cpp/tutorial_code/Histograms_Matching/compareHist_Demo.cpp
View File

@ -40,13 +40,13 @@ int main( int argc, char** argv )
hsv_half_down = hsv_base( Range( hsv_base.rows/2, hsv_base.rows - 1 ), Range( 0, hsv_base.cols - 1 ) ); hsv_half_down = hsv_base( Range( hsv_base.rows/2, hsv_base.rows - 1 ), Range( 0, hsv_base.cols - 1 ) );
/// Using 30 bins for hue and 32 for saturation /// Using 50 bins for hue and 60 for saturation
int h_bins = 50; int s_bins = 60; int h_bins = 50; int s_bins = 60;
int histSize[] = { h_bins, s_bins }; int histSize[] = { h_bins, s_bins };
// hue varies from 0 to 256, saturation from 0 to 180 // hue varies from 0 to 179, saturation from 0 to 255
float s_ranges[] = { 0, 256 };
float h_ranges[] = { 0, 180 }; float h_ranges[] = { 0, 180 };
float s_ranges[] = { 0, 256 };
const float* ranges[] = { h_ranges, s_ranges }; const float* ranges[] = { h_ranges, s_ranges };