Directional bilateral filtering of raw image data

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United States of America Patent

PATENT NO 10949953
SERIAL NO

16352801

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Abstract

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Embodiments relate to directional bilateral filtering of a raw image. For each pixel in the image, a block of pixels surrounding that pixel is used for filtering. When the block of pixels in a Bayer pattern have directionality, directional filter coefficients are used instead of default filter coefficients. To obtain a directional tap, a directional filter coefficient is attenuated by an attenuation factor that differs based at least on the location of the pixels in the pixel block. The directional taps are blended with non-directional taps derived from the default filter coefficients using a weight representing confidence on the directionality. The filtered pixel values are then obtained by multiplying pixel values with corresponding taps.

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Patent Owner(s)

Patent OwnerAddress
APPLE INCONE APPLE PARK WAY CUPERTINO CA 95014

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lin, Sheng San Jose, US 118 1317
Pope, David R Fremont, US 59 458

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