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Low-delay image progressive transmission method based on sliding window BATS code

A transmission method and low-latency technology, applied in the field of image communication, can solve the problems of unguaranteed transmission reliability, shortened code length, and random coding.

Active Publication Date: 2020-09-29
UNIV OF ELECTRONIC SCI & TECH OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the shortened code length and the randomness of the encoding, the reliability of its transmission cannot be guaranteed.

Method used

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  • Low-delay image progressive transmission method based on sliding window BATS code
  • Low-delay image progressive transmission method based on sliding window BATS code
  • Low-delay image progressive transmission method based on sliding window BATS code

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Embodiment Construction

[0074] Below in conjunction with accompanying drawing and simulation example, describe technical scheme of the present invention in detail:

[0075] The invention is an application design of sliding window BATS codes and wavelet SPIHT codes in image transmission based on coding statistics, and is suitable for low-time-delay and reliable image transmission in multi-hop networks. In image communication, in order to save network resources, images usually need to be encoded and compressed before transmission. Considering the user experience (QoE), the present invention adopts wavelet SPIHT coding with progressive transmission characteristics as its source coding scheme. In order to ensure reliable transmission of compressed data in a multi-hop network, the present invention intends to use BATS code as its channel coding scheme. The BATS code has high reliability and low complexity, but it requires the receiving end to start decoding after receiving a sufficient number of encoded ...

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Abstract

The invention belongs to the technical field of image communication, and particularly relates to a low-delay image progressive transmission method based on a sliding window BATS code. The invention aims to overcome the defect of high time delay of the traditional BATS code, realize reliable image progressive transmission and improve QoE of a user to a communication system. Time delay reduction andprogressive transmission are mainly realized through combination of a sliding window BATS code and wavelet SPIHT coding. The main idea of the sliding window BATS code based on coding statistics is toimprove a common sliding window structure. According to the method, the coding information of the current window is counted to obtain the compressed data packet which does not participate in coding,the compressed data packet is continuously coded in the next window, and the success recovery probability is improved by increasing the coding probability, so that the influence of shortening of the code length of the BATS code and the coding randomness on the reliability of the scheme is reduced.

Description

technical field [0001] The invention belongs to the technical field of image communication, and in particular relates to a low-delay image progressive transmission method based on a sliding window BATS code. Background technique [0002] With the development of multimedia communication technology, image communication, as an important part of it, is gradually penetrating into people's daily life, such as telemedicine, remote monitoring, e-commerce and interactive multimedia. In image communication, source coding and channel coding are two essential links. Source coding achieves the purpose of data compression by reducing redundant information in image data, thereby saving channel bandwidth resources; channel coding achieves the purpose of error correction by adding certain redundant information to ensure reliable transmission of compressed data streams. Therefore, the selection of source coding scheme and channel coding scheme is particularly important for image communicatio...

Claims

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Application Information

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IPC IPC(8): H04N19/64H04N19/70H04L1/00
CPCH04L1/005H04L1/0057H04L1/0076H04N19/647H04N19/70
Inventor 王臣玺焦利彬黄文才王斌索宏泽史治平
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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