1. Center for Augmented Intelligence and Data Science (CAIDS), College of Science, Engineering and Technology (CSET), University of South Africa (UNISA) 1 , Preller Street, UNISA Muckleneuk Campus, Pretoria 0003, South Africa
2. Department of Medical Physics, Sefako Makgatho Health Sciences University (SMU) 2 , Molotlegi Street, Ga-Rankuwa, Pretoria, South Africa
3. Department of Electrical and Electronic Engineering, College of Technology, University of Buea 3 , P.O. Box 63, Buea, Cameroon
4. Department of Mechanical Engineering Science, University of Johannesburg 4 , Johannesburg, South Africa