Lens shading compensation apparatus and method, and image...

Details Lens shading compensation apparatus and method, and image... Lens shading compensation apparatus and method, and image...

2006-12-28

2011-11-01

Chan, Jason (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S222100, C348S241000, C348S335000, C348S340000, C382S167000, C382S254000, C382S274000

Reexamination Certificate

active

08049795

ABSTRACT:
Disclosed are a lens shading compensation apparatus and a lens shading compensation method in an image sensor that compensate the difference in signal amplitude according to the position of pixels to preserve the quality of a primitive image. The lens shading compensation apparatus includes a pixel value analyzing part, an auto exposure value setting part, a central pixel detecting part, a table generating part, a pixel location calculating part, a mask image generating part and a compensation part. The above apparatus and method perform a color interpolation individually for red, green and blue, and then compensate a lens shading image for each color in accordance with its characteristics. Also the above apparatus and method can analyze and compensate a lens shading phenomenon without considering other colors or being interrupted by other colors.

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