具体的算法原理可以参考:

PS滤镜,照亮边缘

// 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
"Glowing Edge" 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 Image_2(Image_in.size(), CV_32FC3);
Image_in.convertTo( Image_2, CV_32FC3); Mat kernel;
Point anchor;
double delta;
int ddepth;
int kernel_size; ddepth=-1;
anchor=Point(-1,-1);
delta=0; kernel_size=3; Mat K_x;
Mat K_y; K_x=Mat::zeros(kernel_size, kernel_size, CV_32F);
K_y=Mat::zeros(kernel_size, kernel_size, CV_32F); float p,q; p=3; q=0; K_x.at<float>(0,0)=-1; K_x.at<float>(0,1)=0; K_x.at<float>(0,2)=1;
K_x.at<float>(1,0)=-p; K_x.at<float>(1,1)=q; K_x.at<float>(1,2)=p;
K_x.at<float>(2,0)=-1; K_x.at<float>(2,1)=0; K_x.at<float>(2,2)=1; K_y.at<float>(0,0)=-1; K_y.at<float>(0,1)=-p; K_y.at<float>(0,2)=-1;
K_y.at<float>(1,0)=0; K_y.at<float>(1,1)=q; K_y.at<float>(1,2)=0;
K_y.at<float>(2,0)=1; K_y.at<float>(2,1)=p; K_y.at<float>(2,2)=1; Mat Image_x(Image_in.size(), CV_32FC3);
Mat Image_y(Image_in.size(), CV_32FC3); cv::filter2D(Image_2, Image_x, ddepth, K_x);
cv::filter2D(Image_2, Image_y, ddepth, K_y); float alpha=0.5; Image_out=alpha*abs(Image_x)+(1-alpha)*abs(Image_y); Image_out=Image_out/255; Show_Image(Image_out, "out.jpg"); imwrite("out.jpg", Image_out*255); waitKey();
cout<<"All is well."<<endl; } #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:

OpenCV——照亮边缘-LMLPHP

效果图:

OpenCV——照亮边缘-LMLPHP

04-19 17:38