ศรีนนท์ฉัตร จักรี, and เปาะทองคำ สมชาย. 2016. “Tactile Object recognition using low resolution image from close up image and Principle Component Analysis and z-score”. Journal of Applied Research on Science and Technology (JARST) 15 (1):27-31. https://ph01.tci-thaijo.org/index.php/rmutt-journal/article/view/117702.