GCOTSC: Green Coding Techniques for Online Teaching Screen Content Implemented in AVS3

IF 3.2 1区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Broadcasting Pub Date : 2024-01-10 DOI:10.1109/TBC.2023.3340042

Liping Zhao;Zhuge Yan;Zehao Wang;Xu Wang;Keli Hu;Huawen Liu;Tao Lin

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引用次数: 0

Abstract

During and following the global COVID-19 pandemic, the use of screen content coding applications such as large-scale cloud office, online teaching, and teleconferencing has surged. The vast amount of online data generated by these applications, especially online teaching, has become a vital source of Internet video traffic. Consequently, there is an urgent need for low-complexity online teaching screen content (OTSC) coding techniques. Energy-efficient low-complexity green coding techniques for OTSC, named GCOTSC, are proposed based on the unique characteristics of OTSC. In the inter-frame prediction mode, the input frames are first divided into visually constant frames (VCFs) and non-VCFs using a VCF identifier. A new VCF mode has been proposed to code VCFs efficiently. In the intra-frame prediction mode, a heuristic multi-type least probable option skip mode based on static and dynamic historical information is proposed. Compared with the AVS3 screen content coding algorithm, using the typical online teaching screen content and AVS3 SCC common test condition, the experimental results show that the GOTSC achieves an average 59.06% reduction of encoding complexity in low delay configuration, with almost no impact on coding efficiency.

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GCOTSC：在 AVS3 中实施的在线教学屏幕内容绿色编码技术

在 COVID-19 全球大流行期间和之后，屏幕内容编码应用（如大型云办公、在线教学和远程会议）的使用激增。这些应用（尤其是在线教学）产生的大量在线数据已成为互联网视频流量的重要来源。因此，迫切需要低复杂度的在线教学屏幕内容（OTSC）编码技术。根据 OTSC 的独特性，提出了针对 OTSC 的高能效、低复杂度绿色编码技术，命名为 GCOTSC。在帧间预测模式中，首先使用 VCF 标识符将输入帧分为视觉恒定帧（VCF）和非 VCF。我们提出了一种新的 VCF 模式，以对 VCF 进行高效编码。在帧内预测模式中，提出了一种基于静态和动态历史信息的启发式多类型最小可能选项跳过模式。与 AVS3 屏幕内容编码算法相比，使用典型的在线教学屏幕内容和 AVS3 SCC 通用测试条件，实验结果表明，在低延迟配置下，GOTSC 平均降低了 59.06% 的编码复杂度，几乎不影响编码效率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Broadcasting 工程技术-电信学

CiteScore

9.40

自引率

31.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The Society’s Field of Interest is “Devices, equipment, techniques and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.” In addition to this formal FOI statement, which is used to provide guidance to the Publications Committee in the selection of content, the AdCom has further resolved that “broadcast systems includes all aspects of transmission, propagation, and reception.”