Pixel compensating circuit, method for compensating pixels,...

Details Pixel compensating circuit, method for compensating pixels,... Pixel compensating circuit, method for compensating pixels,...

2004-01-21

2008-10-28

Vu, Ngoc-Yen (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S247000, C348S280000

Reexamination Certificate

active

07443433

ABSTRACT:
The present invention relates to a pixel compensating circuit, an image taking apparatus employing such pixel compensating circuit, and a method for compensating pixel, wherein a defect pixel existed on an image sensor is effectively compensated. Namely, plural kinds of color information of a defect pixel and adjacent pixels having no defect are stored in a color information holding unit, and a difference calculating unit calculates a difference between color information without defect among color information of the defect pixel and color information of the adjacent pixels. Then, a reference pixel determining unit determines a reference pixel that makes the sum of the absolute values for the differences calculated at the difference calculating unit minimum among adjacent pixels, and a compensating unit compensates defect color information of the defect pixel based on an average value obtained by calculating average value of the differences for the reference pixel.

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