1. Department of Computer Science & Engineering,
Institute of Engineering & Technology, Gautam Buddh Technical University,
Lucknow 226 021, India
2. Department of Computer Engineering, Indian Institute
of Technology, Banaras Hindu University, Varanasi 221 005, India
3. School of Biomedical Engineering, Indian Institute of
Technology, Banaras Hindu University, Varanasi 221 005, India