Three-dimensional digital mapping of the optic nerve head cupping in glaucoma

Sunanda Mitra; Manuel Ramirez; Jose Morales

doi:10.1117/12.137427

14 August 1992 Three-dimensional digital mapping of the optic nerve head cupping in glaucoma

Sunanda Mitra, Manuel Ramirez, Jose Morales

Proceedings Volume 1644, Ophthalmic Technologies II; (1992) https://doi.org/10.1117/12.137427
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Visualization of the optic nerve head cupping is clinically achieved by stereoscopic viewing of a fundus image pair of the suspected eye. A novel algorithm for three-dimensional digital surface representation of the optic nerve head, using fusion of stereo depth map with a linearly stretched intensity image of a stereo fundus image pair, is presented. Prior to depth map acquisition, a number of preprocessing tasks including feature extraction, registration by cepstral analysis, and correction for intensity variations are performed. The depth map is obtained by using a coarse to fine strategy for obtaining disparities between corresponding areas. The required matching techniques to obtain the translational differences in every step, uses cepstral analysis and correlation-like scanning technique in the spatial domain for the finest details. The quantitative and precise representation of the optic nerve head surface topography following this algorithm is not computationally intensive and should provide more useful information than just qualitative stereoscopic viewing of the fundus as one of the diagnostic criteria for diagnosis of glaucoma.

Citation Download Citation

Sunanda Mitra, Manuel Ramirez, and Jose Morales "Three-dimensional digital mapping of the optic nerve head cupping in glaucoma", Proc. SPIE 1644, Ophthalmic Technologies II, (14 August 1992); https://doi.org/10.1117/12.137427

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