Centroids evaluation of the images obtained with the conical null-screen corneal topographer

Arturo I. Osorio-Infante; Victor de Emanuel Armengol-Cruz; Manuel Campos-García; Cesar Cossio-Guerrero; Jorge Marquez-Flores; José Rufino Díaz-Uribe

doi:10.1117/12.2237979

28 September 2016 Centroids evaluation of the images obtained with the conical null-screen corneal topographer

Arturo I. Osorio-Infante, Victor de Emanuel Armengol-Cruz, Manuel Campos-García, Cesar Cossio-Guerrero, Jorge Marquez-Flores, José Rufino Díaz-Uribe

Author Affiliations +

Proceedings Volume 9971, Applications of Digital Image Processing XXXIX; 997128 (2016) https://doi.org/10.1117/12.2237979
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

In this work, we propose some algorithms to recover the centroids of the resultant image obtained by a conical nullscreen based corneal topographer. With these algorithms, we obtain the region of interest (roi) of the original image and using an image-processing algorithm, we calculate the geometric centroid of each roi. In order to improve our algorithm performance, we use different settings of null-screen targets, changing their size and number. We also improved the illumination system to avoid inhomogeneous zones in the corneal images. Finally, we report some corneal topographic measurements with the best setting we found.

Citation Download Citation

Arturo I. Osorio-Infante, Victor de Emanuel Armengol-Cruz, Manuel Campos-García, Cesar Cossio-Guerrero, Jorge Marquez-Flores, and José Rufino Díaz-Uribe "Centroids evaluation of the images obtained with the conical null-screen corneal topographer", Proc. SPIE 9971, Applications of Digital Image Processing XXXIX, 997128 (28 September 2016); https://doi.org/10.1117/12.2237979

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