Parvatham Venkatachalam received the M.Sc. and Ph.D. degree in mathematics from Indian Institute of Technology Bombay, Mumbai, India in 1972 and 1978 respectively. Currently, she is a professor in Centre of Studies in Resources Engineering, Indian Institute of Technology Bombay, India. Her research interests include development of GIS for natural and human resources applications, digital image processing of remote sensing satellite data, development of spatial decision support systems, data structure in spatial databases, spatial data mining and warehousing. Dr. Venkatachalam is a founder member of Indian Society of Geomatics, Life Member of Indian Society of Remote Sensing and Life Member of Indian National Cartographic Association. B. Krishna Mohan received the Ph.D. degree in electrical engineering from the Indian Institute of Technology (IIT) Bombay, Mumbai, India, in 1991. He is currently Professor and Head with the Centre of Studies in Resources Engineering, IIT Bombay. His areas of research include satellite image processing and analysis, machine learning algorithms, and educational content development for remote sensing and image processing. Dr. Mohan is a Life Member of the Indian Society for Remote Sensing and Indian Society for Geomatics. He was the recipient of the 2003 IETE M.N. Saha Memorial Award for Best Application Oriented Paper in IETE Journal of Research