Impulse noise removal design for bayer pattern image sensor

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United States of America Patent

PATENT NO 9094565
APP PUB NO 20130258143A1
SERIAL NO

13432804

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A system and method provide for an adaptive median filter with edge protection and four line buffers to remove the impulse noise for a Bayer pattern image. The system and method separates the Bayer pattern image data into different channels by color and applies the adaptive median filter to remove the impulse noise on each channel. The adaptive median filter has five threshold values that may be modified to achieve different light condition response based on the detected noise level of the image. Thus, proper threshold values with better brightness response to the input pixels may be applied and impulse noise may be suppressed effectively, while preserving image details.

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Patent Owner(s)

  • ANALOG DEVICES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Jianrong Andover, US 28 140
Huo, Bin Wayland, US 10 104
Wang, Yong Beijing, CN 995 8736
Zhao, Yimiao Beijing, CN 8 29

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