Malayil, A. ., A. . Raj, and S. . T. “Boundary Detection of Natural Image Objects Using Improved High-Pass Filter Algorithm and Morphological Structuring Element”. Journal of Information Systems Research and Practice, vol. 2, no. 4, Oct. 2024, pp. 2-15, https://vmis.um.edu.my/index.php/JISRP/article/view/55491.