用c++怎样从彩色图像中分解出R,G,B分量,并且分别保存

发布网友发布时间：2022-07-13 12:35

共1个回答

热心网友时间：2023-10-30 01:48

单单是图像的加载不是一两句代码就能搞定的。

如果你做图像方面的，不妨看看《Visual C++ 数字图像处理典型算法及实现》

推荐 opencv库，简单易学

例如使用opencv分离R，G，B三个分量有很多方法，如下：而且保存只需一个cvSave()函数。

#include <cv.h>
#include <highgui.h>

int main(int argc, char** argv)
{

IplImage* src = cvLoadImage( argv[1], 1 );
IplImage * RedChannel = cvCreateImage( cvGetSize(src), 8, 1);
IplImage * GreenChannel = cvCreateImage( cvGetSize(src), 8, 1);
IplImage * BlueChannel = cvCreateImage( cvGetSize(src), 8, 1);
IplImage * alphaChannel = cvCreateImage( cvGetSize(src), 8, 1);
cvSetImageCOI(src,1);
cvCopy(src,BlueChannel); //提取蓝色
cvSetImageCOI(src,2);
cvCopy(src,GreenChannel); //提取绿色
cvSetImageCOI(src,3);
cvCopy(src,RedChannel); //提取红色

cvNamedWindow( "RedChannel", 1 );
cvNamedWindow( "GreenChannel", 1 );
cvNamedWindow( "BlueChannel", 1 );
cvNamedWindow( "lphaChannel", 1 );

cvShowImage( "RedChannel", RedChannel );
cvShowImage( "GreenChannel", GreenChannel );
cvShowImage( "BlueChannel", BlueChannel );
cvShowImage( "lphaChannel", alphaChannel );

cvWaitKey(0);
cvReleaseImage( &RedChannel );
cvReleaseImage( &GreenChannel );
cvReleaseImage( & BlueChannel );
cvReleaseImage( & alphaChannel );

return 0;
}
/*#include <cv.h>
#include <highgui.h>

int main(int argc, char** argv)
{

IplImage* src = cvLoadImage( argv[1], 1 );
IplImage * RedChannel = cvCreateImage( cvGetSize(src), 8, 1);
IplImage * GreenChannel = cvCreateImage( cvGetSize(src), 8, 1);
IplImage * BlueChannel = cvCreateImage( cvGetSize(src), 8, 1);
IplImage * alphaChannel = cvCreateImage( cvGetSize(src), 8, 1);
cvCvtPixToPlane(src,BlueChannel,GreenChannel,RedChannel,NULL);

cvNamedWindow( "RedChannel", 1 );
cvNamedWindow( "GreenChannel", 1 );
cvNamedWindow( "BlueChannel", 1 );
cvNamedWindow( "lphaChannel", 1 );

cvShowImage( "RedChannel", RedChannel );
cvShowImage( "GreenChannel", GreenChannel );
cvShowImage( "BlueChannel", BlueChannel );
cvShowImage( "lphaChannel", alphaChannel );

cvWaitKey(0);
cvReleaseImage( &RedChannel );
cvReleaseImage( &GreenChannel );
cvReleaseImage( & BlueChannel );
cvReleaseImage( & alphaChannel );

return 0;
}
*/