Recovering affine illumination changes from ray projections in an image pair

Yun Zhang; Henry Chu

doi:10.1117/12.820321

19 March 2009 Recovering affine illumination changes from ray projections in an image pair

Yun Zhang, Henry Chu

Proceedings Volume 7343, Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering VII; 734316 (2009) https://doi.org/10.1117/12.820321
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Images taken of a scene at different times are often acquired from different angles under possibly different lighting conditions. Some of the macroscopic illumination changes between a source image and a target image can be captured by an affine illumination model with two parameterts, viz. a factor by which the contrast is changed and the offset of brightness. We propose an algorithm that embeds a photometric recovery in an iterative geometric recovery process. The convergence of this iteration gives a combined recovery of the geometric and photometric distortion.

Citation Download Citation

Yun Zhang and Henry Chu "Recovering affine illumination changes from ray projections in an image pair", Proc. SPIE 7343, Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering VII, 734316 (19 March 2009); https://doi.org/10.1117/12.820321

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