Evaluation on an Optical Scanning Device for Skin Profile Measurement.

: This paper describes experimental evaluations of an optical scanning device for skin surface recovery using multiple light source photometric stereo method. The portable optical device based on the principle of six-light photometric stereo was developed and subjected to evaluation and advancement through clinical trials for the purpose of monitoring skin conditions. As the device can provide objective topographic data for the description of the skin surface condition, the evaluation processes are mainly applied on skin in vitro and in vivo and compared with a commercial product, PRIMOS, which has been so far considered as a standard device used for skin surface measurement. The results of the experiment show that the topography measured by the device is significantly closer to that of the ground truth. Meanwhile, the new optical scanning device demonstrates better performance in measuring skin surface in vivo, superior to that of the PRIMOS.