Opencv matrix to image Conversion

[Reprinted] opencv creates an image based on the data matrix

Source: http://my.csdn.net/c4501srsy/code/detail/21397

C ++ code

data=newBYTE[300*200*3];memset(data,128,300*200*3);// Prepare the color matrix  IplImage* img;  CvSize size;size.width =300;size.height=200;img=cvCreateImage(size,IPL_DEPTH_8U,3);// Create an image. Note: ipl_depth_8u is a byte type and 3 is the number of channels.  memcpy(img->imageData,data,300*200*3); // Load the data matrix into the image img  CRect rect;                            // Display the following imagesrect.left=0;rect.top=0;rect.right=img->width;rect.bottom=img->height;  CvvImage cimg;cimg.CopyOf(img);cimg.DrawToHDC(dc.GetSafeHdc(),&rect);