Lens correction logic for image sensors

Details Lens correction logic for image sensors Lens correction logic for image sensors

2011-03-15

2011-03-15

Ometz, David L (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S335000

Reexamination Certificate

active

07907185

ABSTRACT:
Methods of calibrating a pixel correction function for compensating for vignetting in an optical device include exposing an optical device to a reference object in order to generate pixel data of at least part of an image of the reference object. A pixel correction function is provided including a first number of unknown constant values. Pixel data of a second number of sample points is provided from the pixel data of the at least part of the image. The second number is equal to the first number or the first number plus one. The constant values are determined using the pixel data of the second number of sample points. The method allows a pixel correction function to be calibrated with a small number of sample points, thereby simplifying calibration processes for individual optical devices, and thus reducing the manufacturing costs.

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