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Data compression method and device for predictive residual entropy coding by switching multiple schemes

A technology of prediction residual and entropy coding, which is applied in the field of coding and decoding (also called decoding) systems, and can solve problems such as the inability to meet the requirements of coding efficiency and the large difference in bit precision.

Pending Publication Date: 2020-09-08
上海天荷电子信息有限公司
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AI Technical Summary

Problems solved by technology

[0032] As data becomes more diverse and differentiated, prediction, transformation, and quantization technologies are also more diverse, differentiated, and complicated. The dynamic range and bit precision of data vary greatly, such as ranging from 8 bits to 16 bits. Data compression In the new application fields of various data compression with different distortion requirements and other new features, a single binarization, debinarization, entropy coding and entropy decoding methods can no longer meet the requirements of these new applications for coding efficiency

Method used

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  • Data compression method and device for predictive residual entropy coding by switching multiple schemes
  • Data compression method and device for predictive residual entropy coding by switching multiple schemes
  • Data compression method and device for predictive residual entropy coding by switching multiple schemes

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Embodiment 1

[0109] In the encoding method or device or decoding method or device, the elements of the data set are bytes or bits or pixels or N (1≤N≤5) component pixels or a component of N component pixels or spatial sampling points or transformations domain coefficient.

Embodiment 2

[0111] In the encoding method or device or the decoding method or device, the multiple options for the distortion requirement of the data compression are lossless compression and lossy compression.

Embodiment 3

[0113] In the encoding method or device or the decoding method or device, the various options for the bit precision of the data include at least the following options: 8bit, 10bit, 12bit, 16bit.

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Abstract

The invention provides a data compression method and a device. The data compression method and the device are used for correspondingly selecting one of a plurality of sets of preset residual error entropy coding schemes including binarization and / or entropy coding preprocessing to perform entropy coding on residual errors of an integral compression unit according to settings of coding parameters and / or coding mode options at least including data bit precision and / or data compression distortion requirements and / or conversion sizes and / or quantization parameters and / or prediction modes and / or conversion modes and / or quantization modes.

Description

technical field [0001] The present invention relates to a coding and decoding (also called decoding) system for compressing data, especially a method and device for entropy coding and entropy decoding of prediction residuals of data. Background technique [0002] As human society enters the era of big data, artificial intelligence, cloud computing, mobile computing, cloud-mobile computing, ultra-high-definition (4K) and ultra-ultra-high-definition (8K) video image resolution, 4G / 5G communication, and virtual reality, the For all kinds of data, including big data, image data, video data, audio data, voice data, neural network data, and various new forms of data, ultra-high compression ratio and extremely high-quality data compression become an indispensable technology . A new trend in the field of data compression is the diversification and differentiation of data, such as the increasing dynamic range and the bit precision of its representation, and the increasing requirem...

Claims

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Application Information

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IPC IPC(8): H04N19/12H04N19/124H04N19/13H04N19/137H04N19/50
CPCH04N19/12H04N19/124H04N19/137H04N19/13H04N19/50
Inventor 林涛
Owner 上海天荷电子信息有限公司
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