Apparatus and method of identifying signals in biological tissue

Details Apparatus and method of identifying signals in biological tissue Apparatus and method of identifying signals in biological tissue

1991-02-19

1992-12-08

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351247, A61B 310

Patent

active

051701936

ABSTRACT:
The present invention describes a technique and apparatus for finding spots in an image with substantial noise making it difficult to identify without specialized noise suppression algorithms. In the context of determining corneal shape, as an example of the technique, the reflections of point light sources in or on the cornea have long played a diagnostic role. The image analysis technique described applies the tools of mathematical morphology and prior information about the shape of illumination patterns to remove noise and isolate the points of interest for further mathematical analysis. The output from the technique is a set of pairs matching the detected points in the image with the known location of the illumination.

REFERENCES:
patent: 4312574 (1982-01-01), Wilms
patent: 4878750 (1989-11-01), Sekiguchi

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