Filters for motion compensation interpolation with reference down-sampling
AssigneeAlibaba Group Holding Limited
InventorsJiancong Luo, Yan Ye, Mohammed Golam Sarwer
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Abstract
The present disclosure provides systems and methods for processing video content using motion compensation interpolation. The methods include: in response to a target picture and a reference picture having different resolutions, applying a band-pass filter to the reference picture, to perform a motion compensated interpolation with reference down-sampling to generate a reference block; and encoding or decoding a block of the target picture using the reference block.
Claims21
A computer-implemented method for processing video content, comprising:
- encoding or decoding a picture block by applying a first filter to a reference picture,
- wherein the applying of the first filter performs both motion-compensation interpolation and downsampling of the reference picture, and
- wherein the first filter is a band-pass filter having a plurality of integer coefficients derived from a cosine windowed-sinc function, a sum of the plurality of integer coefficients being equal to a power of 2.
A system for processing video content, comprising:
- a memory for storing a set of instructions;
- and
- at least one processor configured to execute the set of instructions to cause the system to perform:
- encoding or decoding a picture block by applying a first filter to a reference picture,
- wherein the applying of the first filter performs both motion-compensation interpolation and downsampling of the reference picture, and
- wherein the first filter is a band-pass filter having a plurality of integer coefficients derived from a cosine windowed-sinc function, a sum of the plurality of integer coefficients being equal to a power of 2.
A non-transitory computer readable medium storing a bitstream of a video for processing according to a method comprising:
- encoding or decoding a picture block by applying a first filter to a reference picture,
- wherein the applying of the first filter performs both motion-compensation interpolation and downsampling of the reference picture, and
- wherein the first filter is a band-pass filter having a plurality of integer coefficients derived from a cosine windowed-sinc function, a sum of the plurality of integer coefficients being equal to a power of 2.
Dependencies are inferred from the claim text.