问题
How to detect the colour of the skin using OpenCV?
What about using OpenCV Haar face detector to find a face region and then getting the average or most common color in that face region, since it should be the skin color?
Update:
Environment: My frames will have the facial features. (only From hair to shoulders, as attached)

回答1:
you really don't need HAAR detection. the following will definitely work...
my answer for this and similar issues involving color based detection: https://stackoverflow.com/a/17375222/1463143
what it was originally inspired from: https://stackoverflow.com/a/14756351/1463143
if the codes end up detecting blond or brown hair along with the skin, try changing min_YCrCb
to (80,133,77) or play around with that min value
here is a video showcasing skin detection using above mentioned technique.
:)
来源:https://stackoverflow.com/questions/17363022/skin-color-detection-using-opencv