Research Topics

* Symmetric Alpha-Stable (SAS) modeling for noisy images:

* SAS distributions are heavy-tailed statistical models for describing impulsive noise. We have developed an image segmentation algorithm using SAS and derived the optimal statistical decision rule for detecting signals in impulsive noise.

* FOPEN SAR Image Analysis:

* The FOPEN SAR is a new sensor that can see through trees and detect objects obscured by foliage. We have developed a detection algorithm that is adaptive to clutter statistics and clutter types such as trees, grass ,lakes, roads, etc.

* Mammogram Image Analysis:

* We have developed an adaptive algorithm to detect abnormalities in breast tissue such as microcalcifications, lesions, and masses. The approach uses SAS modeling and is able to discern the fine structure and shape of the abnormalities.

* Image Segmentation:

* We derive a novel image segmentation algorithm by modifying Polya's famous urn sampling scheme to model contagious behavior. It is a type of genetic algorithm using temporal and spatial contagion to produce a consistent and smooth segmentation map.

* Super-resolution:

* We have developed a new method for SAR super-resolution (SR) by adapting Shekarforoush and Chellappa's method for video SR. Using polarimetric SAR images, we use the theory of perfect reconstuction filter banks to produce an image with higher resolution and lower noise power.

Class Projects

* Structure from Motion:

* I implemented several SFM algorithms to determine the scene depth (3D structure) from a moving video camera mounted on a robot arm. These techniques are used for 3D model building, virtual reality, and robot navigation.

* Video Processing:

* I implemented several methods for creating a panoramic view from a video sequence (i.e. mosaicking). I also am working on using optical flow for video editing - i.e. digitally removing a person from a video, inserting virtual ads.

Papers

If you would like a copy of any papers, please contact me. * A. Banerjee, P. Burlina, and R. Chellappa, ``Adaptive Target Detection in Foliage-Penetrating SAR Images Using Alpha-Stable Models,'' IEEE Trans. on Image Processing, Vol. 8, No. 12, pp.1823-1831, Dec. 1999.

* A. Banerjee, P. Burlina, and F. Alajaji, ``Image Segmentation and Labeling Using the Polya Urn Model,'' IEEE Trans. on Image Processing, Vol. 8, No. 9, pp.1243-1253, Sept. 1999.

* R. Kapoor, A. Banerjee, G. Tsihrintzis, and N. Nandhakumar, ``Detection of Targets in Heavy-Tailed Foliage Clutter Using an UWB Radar and Alpha-Stable Clutter Models'', IEEE Trans. on Aerospace and Electronic Systems, Vol. 35, pp. 819-834, July, 1999.
* A. Banerjee, P. Burlina, and F. Alajaji, "Contagion-Driven Image Segmentation and Labeling", IEEE Proc. of Int'l. Conf. on Computer Vision, Bombay, India, January 1998.

* H. Shekarforoush, A. Banerjee, and R. Chellappa, "Superresolution of FOPEN SAR Images", Proc. of SPIE AeroSense, Orlando, FL, April 1999.

* A. Banerjee, P. Burlina, R. Chellappa, and R. Kapoor, "Frequency Dependence of ATD Performance in FOPEN SAR Images", IEEE Proc. of Int'l. Conf. on Image Processing, Chicago, IL, October 1998.
* A. Banerjee, P. Burlina, R. Chellappa, and J. Song, "Model-Based Target Detection in FOPEN SAR Images", Proceedings of DARPA Image Understanding Workshop, Monterey, CA, November 1998.