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US Patent 10491922 Non-separable secondary transform for video coding

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Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
10491922
Date of Patent
November 26, 2019
Patent Application Number
15270455
Date Filed
September 20, 2016
Patent Citations Received
‌
US Patent 12126802 Partitions on sub-block transform mode
3
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US Patent 11949870 Context modeling for low-frequency non-separable transformation signaling for video coding
4
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US Patent 11979603 Method and apparatus for video coding
5
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US Patent 11470353 Low-frequency non-separable transform (LFNST) with reduced zero-out in video coding
‌
US Patent 11240534 Extended multiple transform selection for video coding
‌
US Patent 11245894 Method for encoding/decoding video signal, and apparatus therefor
‌
US Patent 11582491 Low-frequency non-separable transform processing in video coding
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US Patent 11032572 Low-frequency non-separable transform signaling based on zero-out patterns for video coding
...
Patent Primary Examiner
‌
Anand S. Rao
Patent abstract

Techniques are described in which a decoder is configured to inverse quantize a first coefficient block and apply a first inverse transform to at least part of the inverse quantized first coefficient block to generate a second coefficient block. The first inverse transform is a non-separable transform. The decoder is further configured to apply a second inverse transform to the second coefficient block to generate a residual video block. The second inverse transform converts the second coefficient block from a frequency domain to a pixel domain. The decoder is further configured to form a decoded video block, wherein forming the decoded video block comprises summing the residual video block with one or more predictive blocks.

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