Abstract
One approach to flat sensor design is to use a lenslet array to form multiple subimages of a scene and then combine the subimages to recover a fully sampled image by using a superresolution algorithm. Previously, superresolution image assembly has been based on information derived from the observed scene. For lenslet arrays, we propose a new scene-independent approach based only on known imager properties in which relative subimage shifts are accurately estimated with a calibration procedure using point source imaging. Thus, the relative resolution enhancement provided by the scene-independent superresolution algorithm is impervious to changes in subimage content, contrast, sharpness, and noise.
© 2007 Optical Society of America
Full Article | PDF ArticleMore Like This
A. V. Kanaev, D. A. Scribner, J. R. Ackerman, and E. F. Fleet
Appl. Opt. 46(20) 4320-4328 (2007)
Yuan Gao, Lizhi Dong, Ping Yang, Guomao Tang, and Bing Xu
Opt. Express 22(7) 8298-8308 (2014)
Kerkil Choi and Timothy J. Schulz
Appl. Opt. 47(10) B104-B116 (2008)