OpenCV——颜色运算
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#ifndef PS_ALGORITHM_H_INCLUDED #define PS_ALGORITHM_H_INCLUDED #include <iostream> #include <string> #include "cv.h" #include "highgui.h" #include "cxmat.hpp" #include "cxcore.hpp" using namespace std; using namespace cv; void Show_Image(Mat&, const string &); void Save_Image(Mat&, const string &); #endif // PS_ALGORITHM_H_INCLUDED
/* This program will do the computation on three channels respectively, and generate the "cast" effect. */ #include "PS_Algorithm.h" using namespace std; using namespace cv; int main(void) { string Img_name("4.jpg"); Mat Image_in; Image_in=imread(Img_name); Show_Image(Image_in, Img_name); // split the three channels Mat Image_2(Image_in.size(), CV_32FC3); Image_in.convertTo( Image_2, CV_32FC3); Mat r(Image_in.rows, Image_in.cols, CV_32FC1); Mat g(Image_in.rows, Image_in.cols, CV_32FC1); Mat b(Image_in.rows, Image_in.cols, CV_32FC1); Mat out[]={b, g, r}; split(Image_2, out); b=out[0]/255; g=out[1]/255; r=out[2]/255; // generate the new image Mat Image_new(Image_in.size(), CV_32FC3); Image_in.convertTo( Image_new, CV_32FC3); // generate new channels Mat r_new(Image_in.rows, Image_in.cols, CV_32FC1); Mat g_new(Image_in.rows, Image_in.cols, CV_32FC1); Mat b_new(Image_in.rows, Image_in.cols, CV_32FC1); float alpha; alpha=0.15; // cv::divide(r,(b+g+0.001),r_new, alpha); // cv::divide(g,(b+r+0.001),g_new, alpha); // cv::divide(b,(r+g+0.001),b_new, alpha); r_new=r*alpha/(b+g+0.001); g_new=g*alpha/(r+b+0.001); b_new=b*alpha/(r+g+0.001); Mat out_new[]={b_new, g_new, r_new}; cv::merge(out_new, 3, Image_new); Show_Image(Image_new, "Img_out"); waitKey(); cout<<"All is well \n"; }
</pre><pre name="code" class="cpp">#include "PS_Algorithm.h" #include <iostream> #include <string> using namespace std; using namespace cv; void Show_Image(Mat& Image, const string& str) { namedWindow(str.c_str(),CV_WINDOW_AUTOSIZE); imshow(str.c_str(), Image); // waitKey(); // cvDestroyWindow(str.c_str()); }
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