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Encoding method, decoding method and encoding device for frames in video stream

A video streaming and encoding technology, applied in the field of video encoding and decoding, can solve the problem of consuming a lot of computing or communication resources

Active Publication Date: 2018-11-09
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Digital video streams can contain large amounts of data and consume significant computing or communication resources of computing devices to process, transmit, or store video data

Method used

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  • Encoding method, decoding method and encoding device for frames in video stream
  • Encoding method, decoding method and encoding device for frames in video stream
  • Encoding method, decoding method and encoding device for frames in video stream

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Embodiment Construction

[0017] Digital video is used for a variety of purposes including, for example, remote business meetings via videoconferencing, high-definition video entertainment, video advertising, or the sharing of user-generated video. Video encoder and decoder combinations (also known as codecs) can use various compression schemes. These compression schemes may include decomposing video images into blocks and generating a digital video output bitstream using one or more techniques to limit the information included in the output. The received bitstream can be decoded to reconstruct blocks and source images from the restricted information.

[0018] Encoding a video stream or a portion thereof, such as a frame or a block, may include using temporal and spatial similarities in the video stream to improve encoding efficiency. For example, a previously coded block can be based on a previously coded block in the video stream by predicting the motion and color information for the current block a...

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Abstract

A method for encoding a frame of a plurality of blocks in a video stream using transform domain intra prediction is disclosed. The method includes, e.g., using a two-dimensional transform to generate a set of transform coefficients for a current block, e.g., using a one-dimensional transform to generate a set of transform coefficients for previously coded pixel values ​​in a frame, using A set of transform coefficients for the predicted block is determined, a residual is determined based on a difference between the set of transform coefficients for the current block and the set of coefficients for the predicted block, and the residual is encoded.

Description

technical field [0001] This disclosure relates to video encoding and decoding. Background technique [0002] A digital video stream may represent video using a sequence of frames or still images. Digital video can be used for a variety of applications including, for example, video conferencing, high-definition video entertainment, video advertising, or the sharing of user-generated video. Digital video streams can contain large amounts of data and consume substantial computing or communication resources of a computing device for processing, transmitting, or storing the video data. Various methods have been proposed to reduce the amount of data in a video stream, including compression and other encoding techniques. Contents of the invention [0003] Implementations of systems, methods, and apparatus for encoding and decoding video signals using transform-domain intra prediction are disclosed herein. [0004] One aspect of the disclosed implementations is a method for enc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/593H04N19/61
CPCH04N19/593H04N19/61H04N19/176
Inventor 许耀武谷群山
Owner GOOGLE LLC