Incorporating pixel replacement for negative values arising...

Details Incorporating pixel replacement for negative values arising... Incorporating pixel replacement for negative values arising...

2006-09-26

2006-09-26

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S241000, C348S246000, C348S247000

Reexamination Certificate

active

07113210

ABSTRACT:
An apparatus and method of processing images in a digital camera and improving the quality of images produced by camera processing software. In low-light digital camera photography, a dark frame image is subtracted from an original picture image to form a resulting image. The resulting image formed from the dark frame subtraction is evaluated for negative and invalid pixel values. Each negative and invalid pixel value is replaced using a pixel replacement algorithm with appropriate positive values.

REFERENCES:
patent: 6144408 (2000-11-01), MacLean
patent: 6522355 (2003-02-01), Hynecek et al.
patent: 6747696 (2004-06-01), Nakata et al.
patent: 6888568 (2005-05-01), Neter
patent: 2003/0133615 (2003-07-01), Bern et al.

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