本文主要是介绍OpenCV——百叶窗，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
参考： PS 图像特效，百叶窗
// 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"window shades" 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 Map(Image_in.size(), CV_32FC3);float val;Mat temp;for (int i=0; i<Map.rows; i++){val=i/255.0;temp=Map.row(i);temp.setTo(Scalar(val,val,val));}int H_shade=8;int Inter=5;int Num;Num=Map.rows/(H_shade+Inter);//cout<<Num;Mat Mask(Image_in.size(), CV_32FC3);Mask.setTo(Scalar(1.0,1.0,1.0));int row_begin=0;for (int i=0; i<=Num; i++){if(i<Num){row_begin=i*(H_shade+Inter);temp=Mask.rowRange(row_begin, row_begin+H_shade-1);temp.setTo(Scalar(0.0,0.0,0.0));}else{row_begin=i*(H_shade+Inter);temp=Mask.rowRange(row_begin, Image_in.rows-1);temp.setTo(Scalar(0.0,0.0,0.0));}}Mat M1, M2;Image_out=Image_out/255.0;cv::multiply(Image_out, -Mask+1, M1);cv::multiply(Map, Mask, M2);Image_out=M1+M2;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
这篇关于OpenCV——百叶窗的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
