ICIP 2006, Atlanta, GA

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Paper Detail

Session:Image/Video Processing Applications: Models and Methods
Time:Wednesday, October 11, 14:20 - 17:00
Presentation: Poster
Topic: Other Areas and Applications: Distributed image processing
Authors: Gabriel Manana; Universidad Nacional de Colombia 
 Eduardo Romero; Universidad Nacional de Colombia 
 Fabio Gonzalez; Universidad Nacional de Colombia 
Abstract: Digital subtraction is a common technique used in radiographic studies of periapical lesions and other dental disorders for which the treatment must be evaluated over time. This paper presents a fast and reliable parallel image registration method for subtracting two digitized radiographs where an unpredicted mismatch is present. An optimal affine transformation is found using an adaptive Genetic Algorithm (GA) as the optimization strategy and a correlation ratio as the similarity measure. The parallel GA implemented takes advantage of the CPU idle cycles of a computational grid, resulting in an application with a computational time of about twenty seconds when processing pairs of standard intra-oral radiographs.