I have previously worked with a group that used photometric stereo to incorporate 3D texture information into the process. See for example this paper: https://

I have previously worked with a group that used photometric stereo to incorporate 3D texture information into the process. See for example this paper: https://www.researchgate.net/publication/269051304_3D_Skin_Texture_Analysis_A_Neural_Network_and_Photometric_Stereo_Perspective https://www.researchgate.net/publication/269051304_3D_Skin_T... Didn't keep up with the clinical research that followed though.