A parallel task division method for hevc decoder

A task division and decoder technology, which is applied in the direction of digital video signal modification, electrical components, image communication, etc., to save synchronization overhead, improve computing resource utilization, and ensure load balance.

Active Publication Date: 2017-02-08
SHANGHAI JIAOTONG UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0013] Aiming at the shortcomings of the existing HEVC decoder design method, the present invention designs a HEVC decoder parallel task division method, so as to achieve the purpose of improving the utilization rate of computing resources and saving synchronization overhead

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  • A parallel task division method for hevc decoder
  • A parallel task division method for hevc decoder
  • A parallel task division method for hevc decoder

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Embodiment Construction

[0025]The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0026] figure 1 Shown in is the HEVC decoder task division method specified in the present invention. Among them, the control unit is responsible for extracting and processing the network abstraction layer unit from the coded bit stream, parsing the parameter set information and header information, and then storing the sub-code stream divided according to the coding tree unit row in the task pool for subsequent Used by the decoding process. In addition, the control unit is also responsible for ma...

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Abstract

The invention discloses a parallel task partitioning method for an HEVC decoder. According to the method, processing of a network abstraction layer unit, decoding of a parameter set and header information and management work of a decoding image buffer area are executed by one control unit, entropy coding, inverse quantization, inverse transformation, intra-frame prediction, inter-frame prediction and deblocking filter required by a decoding and coding tree unit and pixel self-adaptive compensation are executed by a plurality of work units, and a steamline type work mode is adopted in the control unit and the work units. The parallel task partitioning method for the HEVC decoder can ensure load balance better and eliminate dependence on a lock structure in the synchronous process, so that the computing resource utilization rate is improved, and synchronous overhead is saved.

Description

technical field [0001] The present invention relates to a method for implementing a decoder in the technical field of video decoding, in particular to a method for dividing parallel tasks of a decoder for the HEVC standard. Background technique [0002] In order to better adapt to ultra-high-definition video services, the International Telecommunication Union and the International Organization for Standardization jointly developed the next-generation video compression standard HEVC. For HEVC decoders, the huge data processing requirements brought by ultra-high-definition video have exceeded the processing capabilities of existing single-core CPUs, which poses a serious challenge to real-time decoding. [0003] Currently, the best way to solve the above problems is parallel processing technology. The parallel design of the decoder needs to solve two types of problems, namely, task division and synchronization. The first way of task division is function division, which is to...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/61H04N19/96
Inventor 宋利才琦
Owner SHANGHAI JIAOTONG UNIV
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