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A low-latency 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 shortened code length, unguaranteed transmission reliability, and random coding, achieving low latency and improving transmission reliability. , the effect of reducing the transmission delay

Active Publication Date: 2021-08-17
UNIV OF ELECTRONICS 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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  • A low-latency image progressive transmission method based on sliding window bats code
  • A low-latency image progressive transmission method based on sliding window bats code
  • A low-latency 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, the technical scheme of the present invention is described in detail:

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

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Abstract

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. The purpose of the present invention is to overcome the shortcoming of high time delay of the traditional BATS code, realize reliable image progressive transmission, and improve the QoE of the user to the communication system. Among them, the reduction of time delay and progressive transmission are mainly achieved through the combination of sliding window BATS code and wavelet SPIHT code, and the main idea of ​​the sliding window BATS code based on coding statistics is to improve the ordinary sliding window structure and count the current window The encoded information obtains the compressed data packets that have not participated in the encoding, and continues to encode them in the next window. By increasing the encoding probability, the probability of successful recovery is improved, thereby reducing the code length of the BATS code and the randomness of the encoding. impact on reliability.

Description

technical field [0001] The invention belongs to the technical field of image communication, and in particular relates to a low-latency 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, is gradually infiltrating 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 error correction by adding certain redundant information to ensure reliable transmission of compressed data streams. Therefore, the choice of source coding scheme and channel coding scheme is particularly important for image communication. [0003] Currently, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 ELECTRONICS SCI & TECH OF CHINA
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