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基于OpenCV的计算机视觉技术实现.rar

//-----------图像元素读取-----------------------------
#include <cv.h>
#include <highgui.h>
#include <math.h>
void main( )

 {
	CvPoint center;

	double scale=-1.5;

	IplImage* image = cvLoadImage("zjut.jpg");

	center = cvPoint(image->width/2,image->height/2);

	for(int i=0;i<image->height;i++)
	{
		for(int j=0;j<image->width;j++) 
		{
			double dx=(double)(j-center.x)/center.x;
			double dy=(double)(i-center.y)/center.y;
			double weight=exp((dx*dx+dy*dy)*scale);

			uchar* ptr =&CV_IMAGE_ELEM(image,uchar,i,j*3);

			ptr[0] = cvRound(ptr[0]*weight);
			ptr[1] = cvRound(ptr[1]*weight);
			ptr[2] = cvRound(ptr[2]*weight); 
		}

	}


		//cvSaveImage( "copy.png", image );
		cvNamedWindow( "test", 1 );
		cvShowImage( "test", image );
		cvWaitKey();

}