#include "stdafx.h" #include<stdio.h>#include <opencv2/opencv.hpp>using namespace std; using namespace cv;int _tmain(int argc, _TCHAR* argv[]) {//从文件中读入图像clock_t start,finish;start=clock();IplImage * img = cvLoadImage("E:\\landscape\\Landscape0135.jpg");//如果读入图像失败IplImage * b = cvCreateImage(cvGetSize(img),IPL_DEPTH_8U,1);IplImage * g = cvCreateImage(cvGetSize(img),IPL_DEPTH_8U,1);IplImage * r = cvCreateImage(cvGetSize(img),IPL_DEPTH_8U,1);printf("width = %d,height = %d chanels= %d depth = %d",img->width,img->height,img->nChannels,img->depth);char * data = img->imageData;int step = img->widthStep;int chanel = img->nChannels;char * bdata = b->imageData;char * gdata = g->imageData;char * rdata = r->imageData;for(int i=0;i<img->height;i++){for(int j=0;j<img->width;j++)//这里注意三通道的step是单通道的三倍，这里注意除以3，否则数组越界，IPL_DEPTH_8U{bdata[i*step/3 + j] = data[i*step + j*chanel];gdata[i*step/3 + j] = data[i*step + j*chanel + 1];rdata[i*step/3 + j] = data[i*step + j*chanel + 2];}}for(int i=0;i<backimg->height;i++){for(int j=0;j<backimg->width;j++){if(*cvGet2D(back, i, j).val==255){data[i*step + j*chanel] = 0;data[i*step + j*chanel+1] = 0;data[i*step + j*chanel+2] = 255;}}}//显示图像cvNamedWindow("blue");cvNamedWindow("green");cvNamedWindow("red");cvShowImage("blue",b);cvShowImage("green",g);cvShowImage("red",r);cvNamedWindow("Window Test");cvShowImage("Window Test",img);cvWaitKey(0);cvReleaseImage(&img);cvDestroyWindow("Window Test"); finish=clock();cout<<(finish-start)/CLOCKS_PER_SEC<<endl;//此函数等待按键，按键盘任意键就返回waitKey();return 0; }
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