Pixel interpolation method

Details Pixel interpolation method Pixel interpolation method

2008-11-12

2011-10-18

Ahmed, Samir (Department: 2624)

Image analysis

Color image processing

Color correction

C382S162000, C382S278000, C382S300000, C358S525000, C348S538000

Reexamination Certificate

active

08041110

ABSTRACT:
An image processing circuit inputs pixels of an RGB Bayer array therein. A chroma value calculation circuit calculates a chroma factor (KL) for evaluating the chroma of a surrounding area of a specified pixel. A correlation value calculation circuit calculates correlation values for gray image and color image. If the chroma factor (KL) is larger than a threshold value (TH1), a correlation judgment method for color image and a pixel interpolation method for color image are selected, if the chroma factor (KL) is not larger than a threshold value (TH1) and larger than a threshold value (TH2), a correlation judgment method using a correlation value obtained by overall judgment on the correlation values for gray image and color image and a pixel interpolation method for color image are selected, and if the chroma factor (KL) is not larger than a threshold value (TH2), a correlation judgment method for gray image and a pixel interpolation method for gray image are selected.

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