Nombo, J. ., A. . Mwambela, and M. . Kisangiri. “Analysis and Performance Evaluation of Entropic Thresholding Image Processing Techniques for Electrical Capacitance Tomography Measurement System”. Tanzania Journal of Science, vol. 47, no. 3, Aug. 2021, pp. 928-42, doi:10.4314/tjs.v47i3.5.