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cv::rectangle(matImage,cvPoint(20,200),cvPoint(200,300),Scalar(255,0,0),1,1,0);
cv::rectangle(matImage,Rect(100,300,20,200),Scalar(0,0,255),1,1,0);
cvRectangle(iplImage,cvPoint(20,200),cvPoint(200,300),Scalar(0,255,255),1,1,0);