OprenCV学习之路一：将彩色图片转换成灰度图

//将一张彩色图片转成灰度图；
////////////////////////////
#include<cv.h>
#include<cvaux.h>
#include<highgui.h>
#include<ml.h>

#include<iostream>

using namespace std;
using namespace cv;

int  main()
{
	IplImage *src=0;
	src=cvLoadImage("G:/1.jpg",1);

	IplImage *img1=cvCreateImage(cvGetSize(src),8,1);
	IplImage *img2=cvCreateImage(cvGetSize(src),8,1);

	cvCvtColor(src,img1,CV_BGR2GRAY);

	for(int i=0;i<src->height;i++)
	{
		for(int j=0;j<src->width;j++)
		{
			((uchar*)(img2->imageData+i*img2->widthStep))[j]=((uchar *)(src->imageData+i*src->widthStep))[j*src->nChannels+0]*0.114+
				                                         ((uchar *)(src->imageData+i*src->widthStep))[j*src->nChannels+0]*0.587+
									 ((uchar *)(src->imageData+i*src->widthStep))[j*src->nChannels+0]*0.299;
		}
	}

	cvNamedWindow("src",1);
	cvShowImage("src",src);

	cvNamedWindow("img1",1);
	cvShowImage("img1",img1);

	cvNamedWindow("img2",1);
	cvShowImage("img2",img2);

	cvWaitKey(0);

	cvDestroyWindow("src");
	cvDestroyWindow("img1");
	cvDestroyWindow("img2");

	return 0;
}