4. 把一幅彩色图像的R、G、B分量单独显示。

#include <cv.h>#include <highgui.h> int main(void){    IplImage* oo = cvLoadImage("6013202130.jpg", 1);    IplImage * Red = cvCreateImage(cvGetSize(oo), 8, 1);    IplImage * Green = cvCreateImage(cvGetSize(oo), 8, 1);    IplImage * Blue = cvCreateImage(cvGetSize(oo), 8, 1);    cvSetImageCOI(oo, 1);       //通道1 ，蓝色    cvCopy(oo, Blue);   //复制到Blue    cvSetImageCOI(oo, 2);       //通道2 ，绿色    cvCopy(oo, Green);     cvSetImageCOI(oo, 3);       //通道3 ，红色    cvCopy(oo, Red);     cvNamedWindow("Red", 1);    cvNamedWindow("Green", 1);    cvNamedWindow("Blue", 1);    cvNamedWindow("oo", 1);    cvShowImage("原图", oo);    cvShowImage("Red", Red);    cvShowImage("Green", Green);    cvShowImage("Blue", Blue);    cvWaitKey(0);    cvReleaseImage(&Red);    cvReleaseImage(&Green);    cvReleaseImage(&Blue);    cvReleaseImage(&oo);    return 0;}