【OpenCV学习】brg转换hsv函数

/*
    Converts a BGR image to HSV colorspace
    
    @param bgr image to be converted
    
    @return Returns bgr converted to a 3-channel, 32-bit HSV image with
      S and V values in the range [0,1] and H value in the range [0,360]
  */
  IplImage* bgr2hsv( IplImage* bgr )
  {
   IplImage* bgr32f, * hsv;
  
   bgr32f = cvCreateImage( cvGetSize(bgr), IPL_DEPTH_32F, 3 );
   hsv = cvCreateImage( cvGetSize(bgr), IPL_DEPTH_32F, 3 );
 cvConvertScale( bgr, bgr32f, 1.0 / 255.0, 0 );
 cvCvtColor( bgr32f, hsv, CV_BGR2HSV );
  cvReleaseImage( &bgr32f );
 return hsv;
 }