Method for compensating pixel values of defective pixels and...

Details Method for compensating pixel values of defective pixels and... Method for compensating pixel values of defective pixels and...

2011-03-29

2011-03-29

Ometz, David L (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

Reexamination Certificate

active

07916192

ABSTRACT:
A method for compensating pixel values of defective pixels in an image processing system is provided. First, a normal image is captured to obtain the pixel values of a plurality of pixels, and the pixel values of the defective pixels are then marked as a specific pixel value. When the pixel values are to be compensated, the locations of the defective pixels are determined by locating the specific pixel value, and the average values of the neighboring pixels of these defective pixels are calculated and used as the pixel values of these defective pixels, so as to complete a compensation procedure. Besides, the present invention further includes closing the shutter to capture a dark image with similar exposure condition as the normal image does. The compensation procedure is performed after subtracting the dark image from the normal image so that the noise caused by dark current can be eliminated.

REFERENCES:
patent: 6819359 (2004-11-01), Oda
patent: 7224484 (2007-05-01), Reeves et al.
patent: 7250969 (2007-07-01), Sakurai et al.
patent: 2004/0095488 (2004-05-01), Rambaldi et al.
“Office Action of Taiwan counterpart application”, issued on Jan. 21, 2010, p. 1-p. 8.

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