Sae-Tang, Wannida, Masaaki Fujiyoshi, and Hitoshi Kiya. “A New Copyright- and Privacy-Protected Image Trading System Using a Novel SteganographyBased Visual Encryption Scheme”. ECTI Transactions on Electrical Engineering, Electronics, and Communications 17, no. 1 (September 9, 2019): 95–107. Accessed April 27, 2024. https://ph02.tci-thaijo.org/index.php/ECTI-EEC/article/view/215455.