Hiranchan, Sansanee, Maliwan Nitsuwat, Warintip Phumpinyo, Pornjira Polhem, and Mahasak Ketchum. 2020. “Explosive Detector Model Using Image Processing Techniques and Surface Detection Sensors”. Science Technology and Innovation Journal 1 (5):1-9. https://li01.tci-thaijo.org/index.php/stij/article/view/248158.