How to Extract Lip Color from face images?

Hello, i want to ask about how to extract the color from lip? i already know how to get mouth parts from face. I want to know how to extract the color and classify it into gender classification. Please help me.

[Walter Roberson]

The person in my immediate family who had the reddest lips, was my father. The person who had the thinnest and whitest lips is my mother. And me... well I hope your program can figure out what to do with blue lips (poor circulation.)

You cannot use lip color to classify by genders.

If you were willing to surrender to stereotypes about gender and physical characteristics, then you would probably have higher accuracy looking at lip fullness than lip color.

[syahdan edy murad]

I read a journal who said the accuracy for gender classification based on lip color is 80% so, I would like to try this

[ajay kumar]

Maybe this could help you

https://in.mathworks.com/matlabcentral/answers/111073-how-to-extract-lip-region-from-facial-features

[Image Analyst]

@ajay kumar the OP said "i already know how to get mouth parts from face" so presumably he already has a binary image (mask) of just the lips and now just needs to get the color. But we need to know if he means just the arbitrary RGB values, which of course can change drastically depending on lighting and camera exposure, or if he wants the true, calibrated values like he'd get from a spectrophotometer, which will be independent of lighting and exposure time.