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US 11,889,070 B2Granted
Image filtering apparatus, image decoding apparatus, and image coding apparatus
AssigneeSharp Kabushiki Kaisha
InventorsTomohiro Ikai, Norio Itoh, Takeshi Chujoh, Yasuaki Tokumo, Hiroshi Watanabe
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Abstract
A filtered image with enhanced image quality is output. Provided is a loop filter including: a filtering processing unit configured to apply a filter to an unfiltered image; and an ALF unit configured to receive input of a DL image to which a filter is applied by a first filtering processing unit out of the filtering processing unit. The ALF unit further receives input of the unfiltered image.
Claims5
An image filtering apparatus for filtering an input image, the image filtering apparatus comprising:
- a loop filter that includes (i) at least a first neural network filter and a second neural network filter, and (ii) an adaptive loop filter,
- wherein:
- the first neural network filter receives (i) the input image and (ii) an image of a quantization parameter which is defined by an array of two dimensions, and outputs a first output image,
- the second neural network filter receives the input image or the first output image, and outputs a second output image, and
- the adaptive loop filter receives (i) the input image, (ii) the first output image, and (iii) the second output image, and outputs a filtered image, as a third output image.
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Dependencies are inferred from the claim text.