Research Interests :
Ujjwal Bhattacharya, an Associate Professor of the Computer Vision and Pattern Recognition (CVPR) Unit of Indian Statistical Institute, Kolkata, India had completed Bachelor of Science (Hons. In Math.) Degree of Calcutta University from Presidency College, Kolkata in 1986. He obtained Master of Science and Master of Philosophy both in Pure Mathematics from Calcutta University in 1989 and 1991 respectively. He did his Post-graduate Diploma in Computer Applications in 1990. He joined the Electronics and Communications Sciences Unit of Indian Statistical Institute, Kolkata as a research scholar in 1991. He did his PhD work on handwritten character recognition of Bangla. Before joining in a scientific position of the Statistics and Mathematics Unit of Indian Statistical Institute in 1997, he worked for a short period in a project on "Automatic Map Understanding" in the CVPR Unit of the same Institute. In the year 1999, he joined again the CVPR Unit in a Lecturer equivalent position and he is currently an Associate Professor of the same Unit.
Dr. Bhattacharya is a recipient of National Scholarship (1980, 1982) and ISCA Young Scientist Award (1995). He is a senior member of the IEEE. He is also a life member of the IUPRAI, an Indian Unit affiliated to the International Association for Pattern Recognition (IAPR). The focus of his current research interest is applications of Machine Learning in the areas of Computer Vision, Document Analysis, Online/Offline Handwriting Analysis, etc. Previously, Dr. Bhattacharya worked on the convergence issues of the well-known backpropagation learning algorithm and proposed certain self-adaptive learning rates, which often improves the learning performance of an MLP classifier in various real-life application problems such as texture segmentation, analysis of remote sensing images, recognition of handwritten characters etc. His other research interests include color image analysis, precision agriculture etc.