Multi-modal Sensor and Data Processing for Comprehensive Skin Evaluation

This paper presents a novel skin testing device, called the skin sensor, which can realize multi-modal sensing of optical and mechanical skin properties. The sensor structure and operating cycle are described in detail. Based on the calibration result and physical model of the skin sensor, the algorithms to extract optical and mechanical skin properties from skin sensor data are established, which are simple, efficient, and moreover, self-decoupling for different sensing modes. Experiments are conducted with testee to verify the comprehensive skin evaluation ability of the skin sensor, which shows positive results. This skin sensor has great potential in cosmetic usage due to its portability and strong skin state monitoring ability.