Multi-dimentional scale rate control method of network video coder

A rate control and multi-dimensional scale technology, applied in the field of video coding, can solve problems such as large fluctuations, obvious block effects, and unsatisfactory subjective image quality, and achieve good scalability, compatibility, and applicability

Inactive Publication Date: 2005-11-09
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

This code rate control mechanism leads to unsatisfactory subjective image quality, large fluctuations and obvious block effects, and it is impossible to adjust t

Method used

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  • Multi-dimentional scale rate control method of network video coder
  • Multi-dimentional scale rate control method of network video coder
  • Multi-dimentional scale rate control method of network video coder

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Embodiment Construction

[0020] The following describes the implementation in detail in conjunction with the accompanying drawings.

[0021] Since the network video service involves a wide range of business models such as Internet TV, videophone, conference TV, and video-on-demand, the existing independent multi-heterogeneous network, including the Internet, mobile communication network, and broadcasting network, has become an integrated channel, and different services Quality assurance, different access channel bandwidths, different terminal processing capabilities, different application service requirements, etc., all make the bit rate control mechanism based on the quantization step adjustment in the existing complex video encoder rigid and in a dilemma. At present, relaying is often performed through transcoding processing of different network nodes in the service transmission channel. The structural expansion and resource adaptability of the video encoder have become the key issues that need to b...

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Abstract

This invention relates to a network video encoder multidimensional code rate control method. The image control unit of an input video sequence containing macroblock strips, image frames or image set is divided into different dimensions of set spaces according to the time domain, space domain, time domain transformation, space domain, time domain transformation, space domain transformation and space-time domain transformation, a code rate control unit transmits the time-varying state of band-width, the occupation degree of a buffer zone and resource and process ability of multi-access terminal based on the multiple element isomeric network channels to carry out variable bit rate encode of the divided set space to match with the current video encoder resource, or network transmission code rate, the process ability of the receive end and the decoder, the video decoder reconstructs related multidimensional images to display image sequence based on the grammar ID plugged by received stream.

Description

technical field [0001] The present invention relates to a control method in the technical field of video encoding, in particular to a network video encoder multi-dimensional network video encoder that can be applied to constant rate and variable rate data transmission occasions in multiple integrated heterogeneous networks and multiple access environments. Standard rate control method. technical background [0002] At present, the common digital TV coding technology is MPEG-2 technology formulated by MPEG (Motion Picture Experts Group), which is described by ISO / IEC13818 file; the commonly used network video coding technology is MPEG-4 technology, which is described by ISO / IEC14496 file describe. These files only stipulate the grammatical specifications that the code stream compiled by the video encoder must comply with. It includes hierarchical structures such as image groups, image frames, macroblock strips, macroblocks, and blocks, among which the image frames are hierar...

Claims

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Application Information

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IPC IPC(8): H04N7/24
Inventor 熊红凯宋利孙军余松煜周军
Owner SHANGHAI JIAO TONG UNIV
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