示例程序011--彩色图像通道分割

// 017 彩色图片通道分割.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include<iostream>
#include<cv.h>
#include<highgui.h>
using namespace std;

void ChannnelSplit()
{
 IplImage *pImageChannel[4] = { 0, 0, 0, 0 };   //单通道图像数组
 IplImage *pImageColor[4] = { 0, 0, 0, 0 };   //单色图像融合后的彩色图像数组
 IplImage *pSrcImage = cvLoadImage( "lena.jpg", 1 ) ;

 cout<<"通道数为："<<pSrcImage->nChannels<<endl;
 
 IplImage *pImage = cvCreateImage(cvGetSize(pSrcImage), pSrcImage->depth, pSrcImage->nChannels);

 if( pSrcImage )
 {
  for( int i = 0; i < pSrcImage->nChannels; i++ )
  {
   pImageChannel[i] = cvCreateImage( cvGetSize(pSrcImage), pSrcImage->depth, 1 );
   
   pImageColor[i] = cvCreateImage( cvGetSize(pSrcImage), pSrcImage->depth, 3 );
  }
  
  cvSplit( pSrcImage, pImageChannel[0], pImageChannel[1],pImageChannel[2], pImageChannel[3] );
  
  cvMerge(pImageChannel[0],NULL, NULL,NULL, pImageColor[0] );
  cvMerge( NULL, pImageChannel[1],NULL,NULL, pImageColor[1] );
  cvMerge( NULL, NULL,pImageChannel[2],NULL, pImageColor[2] );
  
 }
 
 cvNamedWindow("b",CV_WINDOW_AUTOSIZE);
 cvShowImage("b",pImageColor[0]); 
 
 cvNamedWindow("g",CV_WINDOW_AUTOSIZE);
 cvShowImage("g",pImageColor[1]);
 
 cvNamedWindow("r",CV_WINDOW_AUTOSIZE);
 cvShowImage("r",pImageColor[2]);
 

 cvWaitKey(0);
 
 cvReleaseImage(&pImageChannel[0]);
 cvReleaseImage(&pImageChannel[1]);
 cvReleaseImage(&pImageChannel[2]);
 cvReleaseImage(&pSrcImage);
 
 cvDestroyAllWindows();
}

int main(int argc, char* argv[])
{
 ChannnelSplit();
 return 0;
}

运行结果：