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 computationon three channels respectively, and generatethe "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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