Department of Computer Science at UH

University of Houston

Department of Computer Science

In Partial Fulfillment of the Requirements for the Degree of
Master of Science

Arijit Bose

Will defend his thesis

Automated Alignment of 3D Torso Images


This paper describes an algorithm for automated spatial alignment of three-dimensional (3D) surface images in order to achieve a pre-defined orientation. Surface images of the torso may be acquired from breast cancer patients undergoing reconstructive surgery, to facilitate objective evaluation of breast morphology pre-operatively (for treatment planning) and/or post-operatively (for outcome assessment).

Based on the viewing angle of the multiple cameras used for stereophotography, the orientation of the acquired torso in images may vary from the normal upright position. Consequently, when translating this data into a standard 3D framework for visualization and analysis, the co-ordinate geometry differs from the upright position making robust and standardized comparison of images impractical.

Moreover, manual manipulation and navigation of images to the desired upright position is subject to user bias. Automating the process of alignment and orientation removes operator bias and permits robust and repeatable adjustment of surface images to a pre-defined or desired spatial geometry.


Date: Friday, April 20, 2012
Time: 11:00 AM
Place: T2-323

Faculty, students, and the general public are invited.
Advisor: Dr. Fatima Merchant