1. Lecturer, Dept. of Surveying and Geoinformatics, Univ. of Lagos, 100213 Lagos, Nigeria (corresponding author).
2. Professor, Dept. of Surveying and Geoinformatics, Univ. of Lagos, 100213 Lagos, Nigeria.
3. Senior Lecturer, Dept. of Surveying and Geoinformatics, Univ. of Lagos, 100213 Lagos, Nigeria.