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Video decoding method, device, computer equipment and storage medium

A video decoding and equipment technology, applied in the field of video encoding and decoding, can solve the problem that the decoder cannot calculate the weighting factor

Active Publication Date: 2022-05-27
TENCENT AMERICA LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the decoder can no longer calculate weighting factors based on the timing information available in the bitstream

Method used

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  • Video decoding method, device, computer equipment and storage medium
  • Video decoding method, device, computer equipment and storage medium
  • Video decoding method, device, computer equipment and storage medium

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Embodiment Construction

[0030] By adopting the solutions of the embodiments of the present application, the following effects can be achieved: a) use the weighting information that can be obtained from the reconstruction of neighboring PUs to predict the weighting factor of the current PU; b) improve the entropy coding to improve the coding efficiency and reduce the implementation complexity , one or more effects of reducing computational complexity, reducing memory requirements; c) Calculating and using prediction weights for each sample, rather than for each PU, reduces PU-based The coding overhead of the weighting factor is signaled.

[0031] figure 1 A simplified block diagram of a communication system (100) according to an embodiment of the present application is shown. The communication system (100) may comprise at least two terminals (110-120) interconnected to each other by a network (150). For one-way data transmission, the first terminal (110) may encode video data at a local location fo...

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Abstract

A video decoding method for predicting a weighting factor to be applied to at least one sample in a bidirectionally predicted prediction unit (PU) being reconstructed to decode an encoded video sequence. The method includes: reconstructing a previous weighting factor applied to a previously reconstructed PU from the encoded video sequence; deriving the to-be-applied PU based on the previous weighting factor A weighting factor on the at least one sample in the reconstructed bi-predicted PU; weighting sample values ​​of the samples in the bi-predicted PU being reconstructed by applying the derived weighting factor.

Description

[0001] This application claims priority to US Application No. 62 / 688,896, filed June 22, 2018, and US Application No. 16 / 233,979, filed December 27, 2018, both of which The disclosure is incorporated herein by reference in its entirety. technical field [0002] The present application relates to video encoding and decoding techniques, and in particular, to the prediction of weighting factors in bidirectional and multidirectional prediction for sample prediction. Background technique [0003] Video encoding and decoding using inter-picture prediction with motion compensation has been known for decades. Uncompressed digital video may include a series of images, each image having a certain spatial dimension, eg, 1920x1080 luma samples and associated chroma samples. The series of images may have a fixed or variable image rate (informally, also referred to as a frame rate), eg, 60 images per second or 60 hertz (Hz). Uncompressed video has significant bitrate requirements. For ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/176H04N19/50H04N19/70H04N19/105
CPCH04N19/176H04N19/50H04N19/70H04N19/105
Inventor 夜静刘杉史蒂芬·文格尔
Owner TENCENT AMERICA LLC