Prima Selvia Megawati, M. Choiroel Anwar, Fatimah, Sudiyono, Darmini, and Saifudin. “EFFECTIVENESS EDGE DETECTION OPERATOR CANNY TO IMPROVE IMAGE QUALITY THORAX CT SCAN IN CASES COVID-19”. Journal of Vocational Health Studies, vol. 7, no. 2, Nov. 2023, pp. 77-82, doi:10.20473/jvhs.V7.I2.2023.77-82.