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