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US 2022/0070488 A1Published application
Adaptive Interpolation Filter
AssigneeHuawei Technologies Co., Ltd.
InventorsHuanbang Chen, Haitao Yang, Jianle Chen
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AssigneeHuawei Technologies Co., Ltd.
InventorsHuanbang Chen, Haitao Yang, Jianle Chen
Estimating the term…
Disclosed is a mechanism for selecting an interpolation filter for use in conjunction with an affine block in video coding. A motion vector is determined for a sub-block of the affine block based on control points. A sub-block size of the sub-block is also determined. The interpolation filter is selected for application to a reference block corresponding to the sub-block. The interpolation filter is selected based on the sub-block size. The motion vector of the sub-block and an offset of a current sample of the sub-block are employed to determine a reference sample at the reference block. This includes applying the interpolation filter to the reference block to determine the reference sample when the motion vector at the offset points to a fractional position at the reference block. The reference samples are employed to determine residual information in order to encode the affine block.
A method implemented in a video coding device, the method comprising:
The video coding device of claim 7, wherein control points describe the affine block.
The video coding device of claim 7, wherein the interpolation filter is selected to include a first number of taps when the sub-block size is greater than a threshold and is selected to include a second number of taps when the sub-block size is less than or equal to the threshold, and wherein the first number of taps is larger than the second number of taps.
A non-transitory computer readable medium comprising a computer program product for use by a video coding device, the computer program product comprising computer executable instructions stored on the non-transitory computer readable medium that, when executed by one or more processors, cause the video coding device to:
Dependencies are inferred from the claim text.