[IPOL announce] new article: Recovering the Subpixel PSF from Two Photographs at Different Distances

[announcements about the IPOL journal]

A new article is available in IPOL: http://www.ipol.im/pub/art/2013/77/

Recovering the Subpixel PSF from Two Photographs at Different Distances
by Mauricio Delbracio, Andrés Almansa, Pablo Musé
Image Processing On Line, vol. 2013, pp. 232--241.
http://www.ipol.im/pub/art/2013/77/

Abstract
In most typical digital cameras, even high-end digital single lens 
reflex ones (DSLR), the acquired images are sampled at rates below the 
Nyquist critical rate, causing aliasing effects. In this work we 
describe a new algorithm for the estimation of the point spread function 
(PSF) of a digital camera from aliased photographs, that achieves 
subpixel accuracy. The procedure is based on taking two parallel 
photographs of the same scene, from different distances leading to 
different geometric zooms, and then estimating the kernel blur between them.




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