OpenCV——百叶窗

来源：互联网发布：美工视频教程编辑：程序博客网时间：2024/04/27 13:06
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);}
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