opecv-图像加载,修改和保存

imread用于加载图像;

cvtColor用于实现图像的转换,由RGB→Grascale;

imwrite用于实现对变换后的图像进行存储;

具体实现程序如下:


#include 
#include 
using namespace cv;
using namespace std;
int main( int argc, char**argv )
{

	Mat image;
	image = imread("D:\\lena.bmp");

	Mat gray_image;
	cvtColor( image, gray_image, CV_RGB2GRAY );

	imwrite( "D:\\lena_gray.bmp", gray_image );

	namedWindow( "image Name", CV_WINDOW_AUTOSIZE );
	namedWindow( "Gray image", CV_WINDOW_AUTOSIZE );

	imshow( "image Name", image );
	imshow( "Gray image", gray_image );

	waitKey(0);

	return 0;
}


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