cv2.cvtColor

Reference resources cv2.cvtColor - cloud + Community - Tencent cloud

opencv There are a variety of color spaces in , Include RGB、HSI、HSL、HSV、HSB、YCrCb、CIE XYZ、CIE Lab8 Kind of , In use, we often encounter the transformation of color space , In order to generate mask Operation such as figure .
You can use the following color space conversion function cv2.cvtColor( ) Transform the color space ：

HSV Express hue、saturation、value

image_hsv = cv2.cvtColor(image,cv2.COLOR_BGR2HSV)

Use this function to transform the image from RGB go to HSV Night space , Note that BGR2HSV, Because in opencv The default color space in is BGR.

             

                                           

                                           

Yes, of course , The above picture is randomly selected , Serious applications are similar to ：