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Open-access operating algorithms for commercial videokeratographer and improvement of corneal sampling |
Applied Optics, Vol. 52, Issue 7, pp. C24-C29 (2013)
http://dx.doi.org/10.1364/AO.52.000C24
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Abstract
We present an algorithm to process images of reflected Placido rings captured by a commercial videokeratoscope. Raw data are obtained with no Cartesian-to-polar-coordinate conversion, thus avoiding interpolation and associated numerical artifacts. The method provides a characteristic equation for the device and is able to process around 6 times more corneal data than the commercial software. Our proposal allows complete control over the whole process from the capture of corneal images until the computation of curvature radii.
© 2013 Optical Society of America
OCIS Codes
(100.2000) Image processing : Digital image processing
(330.7327) Vision, color, and visual optics : Visual optics, ophthalmic instrumentation
History
Original Manuscript: September 25, 2012
Revised Manuscript: November 19, 2012
Manuscript Accepted: December 10, 2012
Published: January 21, 2013
Virtual Issues
Vol. 8, Iss. 4 Virtual Journal for Biomedical Optics
Citation
Julián Espinosa, David Mas, Jorge Pérez, and Ana Belén Roig, "Open-access operating algorithms for commercial videokeratographer and improvement of corneal sampling," Appl. Opt. 52, C24-C29 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-7-C24
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