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Improving retinal image resolution with iterative weighted shift-and-add |
JOSA A, Vol. 28, Issue 7, pp. 1395-1402 (2011)
http://dx.doi.org/10.1364/JOSAA.28.001395
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Abstract
High-resolution retinal imaging requires dilating the pupil, and therefore exposing more aberrations that blur the image. We developed an image processing technique that takes advantage of the natural movement of the eye to average out some of the high-order aberrations and to oversample the retina. This method was implemented on a long sequence of retinal images of subjects with normal vision. We were able to resolve the structures of the size of single cells in the living human retina. The improvement of resolution is independent of the acquisition method, as long as the image is not warped during scanning. Consequently, even better results can be expected by implementing this technique on higher-resolution images.
© 2011 Optical Society of America
OCIS Codes
(100.2980) Image processing : Image enhancement
(330.5310) Vision, color, and visual optics : Vision - photoreceptors
(330.6130) Vision, color, and visual optics : Spatial resolution
ToC Category:
Vision, Color, and Visual Optics
History
Original Manuscript: February 17, 2011
Revised Manuscript: April 23, 2011
Manuscript Accepted: May 14, 2011
Published: June 10, 2011
Virtual Issues
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics
Citation
Nizan Meitav and Erez N. Ribak, "Improving retinal image resolution with iterative weighted shift-and-add," J. Opt. Soc. Am. A 28, 1395-1402 (2011)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-7-1395
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