Image processing apparatus and method to perform noise reduction on an image and determine an output pixel value

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United States of America Patent

PATENT NO 9569682
APP PUB NO 20140240556A1
SERIAL NO

14183730

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Abstract

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In a case where a weighted mean value is calculated by calculating weights according to a degree of similarity based on a target pixel, the mean value is affected by noise included in the target pixel. The mean value thereby converges at a value different from a true pixel value without noise and this appears as a remaining noise. To solve this problem, an output value of the target pixel is determined based on a correlation established among a weighted mean value of multiple reference pixels, a pixel value of the target pixel, and the true value of the target pixel.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sasaki, Yoshitaka Kawasaki, JP 530 5861
Yahata, Kazuhiro Kunitachi, JP 54 877

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