1. Department of Computer Science & IT, The Islamia University of Bahawalpur, Punjab 63100, Pakistan
2. Key Laboratory of Photo-Electronic Imaging Technology and System, School of Computer Science, Beijing Institute of Technology (BIT), Beijing 100081, China
3. Department of Computer Science, NFC IET, Multan, Punjab 60000, Pakistan
4. Department of Computer Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan
5. Department of Computer Science, Virtual University of Pakistan, Lahore, Punjab 54000, Pakistan