1. Department of Computer Science, Virtual University of Pakistan, Lahore, Pakistan
2. Department of Computer Science, COMSATS University Islamabad, Islamabad, Pakistan
3. Department of Computer Graphics, Vision and Digital Systems, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Gliwice, Poland
4. Department of Computer Science, Applied College, King Khalid University, Abha, Saudi Arabia