mirror of
https://github.com/opencv/opencv.git
synced 2024-11-29 22:00:25 +08:00
121 lines
4.5 KiB
C++
121 lines
4.5 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
|
|
//
|
|
// By downloading, copying, installing or using the software you agree to this license.
|
|
// If you do not agree to this license, do not download, install,
|
|
// copy or use the software.
|
|
//
|
|
//
|
|
// License Agreement
|
|
// For Open Source Computer Vision Library
|
|
//
|
|
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
|
|
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
|
|
// Third party copyrights are property of their respective owners.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification,
|
|
// are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistribution's of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
//
|
|
// * Redistribution's 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.
|
|
//
|
|
// * The name of the copyright holders may not be used to endorse or promote products
|
|
// derived from this software without specific prior written permission.
|
|
//
|
|
// This software is provided by the copyright holders and contributors "as is" and
|
|
// any express or implied warranties, including, but not limited to, the implied
|
|
// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
|
// In no event shall the Intel Corporation or contributors be liable for any direct,
|
|
// indirect, incidental, special, exemplary, or consequential damages
|
|
// (including, but not limited to, procurement of substitute goods or services;
|
|
// loss of use, data, or profits; or business interruption) however caused
|
|
// and on any theory of liability, whether in contract, strict liability,
|
|
// or tort (including negligence or otherwise) arising in any way out of
|
|
// the use of this software, even if advised of the possibility of such damage.
|
|
//
|
|
//M*/
|
|
#ifndef __OPENCV_BLENDERS_HPP__
|
|
#define __OPENCV_BLENDERS_HPP__
|
|
|
|
#include "precomp.hpp"
|
|
|
|
// Simple blender which puts one image over another
|
|
class Blender
|
|
{
|
|
public:
|
|
enum { NO, FEATHER, MULTI_BAND };
|
|
static cv::Ptr<Blender> createDefault(int type, bool try_gpu = false);
|
|
|
|
void prepare(const std::vector<cv::Point> &corners, const std::vector<cv::Size> &sizes);
|
|
virtual void prepare(cv::Rect dst_roi);
|
|
virtual void feed(const cv::Mat &img, const cv::Mat &mask, cv::Point tl);
|
|
virtual void blend(cv::Mat &dst, cv::Mat &dst_mask);
|
|
|
|
protected:
|
|
cv::Mat dst_, dst_mask_;
|
|
cv::Rect dst_roi_;
|
|
};
|
|
|
|
|
|
class FeatherBlender : public Blender
|
|
{
|
|
public:
|
|
FeatherBlender(float sharpness = 0.02f) { setSharpness(sharpness); }
|
|
float sharpness() const { return sharpness_; }
|
|
void setSharpness(float val) { sharpness_ = val; }
|
|
|
|
void prepare(cv::Rect dst_roi);
|
|
void feed(const cv::Mat &img, const cv::Mat &mask, cv::Point tl);
|
|
void blend(cv::Mat &dst, cv::Mat &dst_mask);
|
|
|
|
private:
|
|
float sharpness_;
|
|
cv::Mat weight_map_;
|
|
cv::Mat dst_weight_map_;
|
|
};
|
|
|
|
|
|
class MultiBandBlender : public Blender
|
|
{
|
|
public:
|
|
MultiBandBlender(int try_gpu = false, int num_bands = 5);
|
|
int numBands() const { return actual_num_bands_; }
|
|
void setNumBands(int val) { actual_num_bands_ = val; }
|
|
|
|
void prepare(cv::Rect dst_roi);
|
|
void feed(const cv::Mat &img, const cv::Mat &mask, cv::Point tl);
|
|
void blend(cv::Mat &dst, cv::Mat &dst_mask);
|
|
|
|
private:
|
|
int actual_num_bands_, num_bands_;
|
|
std::vector<cv::Mat> dst_pyr_laplace_;
|
|
std::vector<cv::Mat> dst_band_weights_;
|
|
cv::Rect dst_roi_final_;
|
|
bool can_use_gpu_;
|
|
};
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// Auxiliary functions
|
|
|
|
void normalize(const cv::Mat& weight, cv::Mat& src);
|
|
|
|
void createWeightMap(const cv::Mat& mask, float sharpness, cv::Mat& weight);
|
|
|
|
void createLaplacePyr(const cv::Mat &img, int num_levels, std::vector<cv::Mat>& pyr);
|
|
|
|
// TODO Use it after gpu::pyrDown and gpu::pyrUp are updated
|
|
#if 0
|
|
void createLaplacePyrGpu(const cv::Mat &img, int num_levels, std::vector<cv::Mat>& pyr);
|
|
#endif
|
|
|
|
// Restores source image in-place (result will be stored in pyr[0])
|
|
void restoreImageFromLaplacePyr(std::vector<cv::Mat>& pyr);
|
|
|
|
#endif // __OPENCV_BLENDERS_HPP__
|