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Combining observation models in dual exposure problems using the Kullback-Leibler divergence | IEEE Conference Publication | IEEE Xplore

Combining observation models in dual exposure problems using the Kullback-Leibler divergence


Abstract:

Photographs acquired under low-lighting conditions require long exposure times and therefore exhibit significant blurring due to the shaking of the camera. Using shorter ...Show More

Abstract:

Photographs acquired under low-lighting conditions require long exposure times and therefore exhibit significant blurring due to the shaking of the camera. Using shorter exposure times results in sharper images but with a very high level of noise. By taking a pair of blurred/noisy images it is possible to reconstruct a sharp image without noise. This paper is devoted to the combination of observation models in the blurred/noisy image pair reconstruction problem. By examining the difference between the blurred image and the blurred version of the noisy image a third observation model is obtained. Based on the minimization of a linear convex combination of Kullback-Leibler divergences between posterior distributions, a procedure to combine the three observation models is proposed in the paper. The estimated images are compared with images provided by other reconstruction methods.
Date of Conference: 23-27 August 2010
Date Added to IEEE Xplore: 30 April 2015
Print ISSN: 2219-5491
Conference Location: Aalborg, Denmark

References

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