参考:
// define head function #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 &); #endif // PS_ALGORITHM_H_INCLUDED /* This program will generate "Paint" effect. */ #include "PS_Algorithm.h" #include <time.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); Mat Image_out(Image_in.size(), CV_32FC3); Image_in.convertTo(Image_out, CV_32FC3); Mat r(Image_in.size(), CV_32FC1); Mat g(Image_in.size(), CV_32FC1); Mat b(Image_in.size(), CV_32FC1); Mat rgb[]={b,g,r}; split(Image_out, rgb); int P_size=3; Mat sub_mat; double min_val; for (int i=P_size; i<Image_in.rows-P_size-1; i++) { for (int j=P_size; j<Image_in.cols-1-P_size; j++) { for(int k=0; k<3; k++) { sub_mat=rgb[k].operator()(Range(i-P_size,i+P_size), Range(j-P_size,j+P_size)); cv::minMaxLoc(sub_mat, &min_val); Image_out.at<Vec3f>(i,j)[k]=min_val; } /* sub_mat=b.operator()(Range(i-P_size,i+P_size), Range(j-P_size,j+P_size)); cv::minMaxLoc(sub_mat, min_val); Image_out.at<Vec3f>(i,j)[0]=*min_val; sub_mat=g.operator()(Range(i-P_size,i+P_size), Range(j-P_size,j+P_size)); cv::minMaxLoc(sub_mat, min_val); Image_out.at<Vec3f>(i,j)[1]=*min_val; sub_mat=r.operator()(Range(i-P_size,i+P_size), Range(j-P_size,j+P_size)); cv::minMaxLoc(sub_mat, min_val); Image_out.at<Vec3f>(i,j)[2]=*min_val; */ } } Image_out=Image_out/255.0; Show_Image(Image_out, "out"); imwrite("out.jpg", Image_out*255); waitKey(); cout<<"All is well."<<endl; } // define the show image #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); }
原图
效果图
原文地址:http://blog.csdn.net/matrix_space/article/details/40623017