jpg---灰度图--二值化

IplImage* image = cvLoadImage("/Users/sinosoft/Desktop/image/samp.jpg",1);    IplImage* grayimage = cvCreateImage(cvGetSize(image), image->depth, 1);    cvCvtColor(image, grayimage, CV_RGB2GRAY);           cvNamedWindow("GrayImage_b",CV_WINDOW_AUTOSIZE);//创建窗口，窗口名字GrayImage    cvShowImage("GrayImage_b", grayimage);        unsigned char* data = (unsigned char*)grayimage->imageData;        cvThreshold(grayimage, grayimage, 100, 255, CV_THRESH_BINARY_INV);    cvNamedWindow("a",CV_WINDOW_AUTOSIZE);    cvShowImage("a", grayimage);    cvWaitKey(0);