Intraframe coding with massive dictionaries of tree-structured representations

Hong Cyuan Wang, Yung Yao Chen, Wen-Huang Cheng, Shih Wei Sun, Kai Lung Hua*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

H.264/AVC belongs to block-based coding category. For the H.264/AVC intraframe coding, a frame is first divided into non-overlapped blocks, and then intra prediction and the DCT-like transform are applied block by block. For the inter frame coding, H.264/AVC employs variable-block-size for motion compensation and transform stages that can significantly improve the coding performance compared with previous video coding standards. However, for the transform stage of intraframe coding, H.264/AVC only provides two fixed transform block sizes: 4 × 4 and 8 × 8 blocks. In this paper, we propose to employ two massive dictionaries (dyadic and multitree) of representations to improve the efficiency of H.264/AVC intraframe coding. In addition, the corresponding rate-distortion cost function and a fast search algorithm are introduced to incorporate the massive dictionaries into the transform stage. The experimental results show that the proposed method outperforms H.264/AVC in terms of both subjective and objective evaluations.

Original languageEnglish
Title of host publicationICIMCS 2014 - Proceedings of the 6th International Conference on Internet Multimedia Computing and Service
PublisherAssociation for Computing Machinery
Pages201-204
Number of pages4
ISBN (Print)9781450328104
DOIs
StatePublished - 1 Jan 2014
Event6th International Conference on Internet Multimedia Computing and Service, ICIMCS 2014 - Xiamen, China
Duration: 10 Jul 201412 Jul 2014

Publication series

NameACM International Conference Proceeding Series

Conference

Conference6th International Conference on Internet Multimedia Computing and Service, ICIMCS 2014
CountryChina
CityXiamen
Period10/07/1412/07/14

Keywords

  • H264/AVC
  • Intraframe coding
  • Trees-tructured dictionaries

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  • Cite this

    Wang, H. C., Chen, Y. Y., Cheng, W-H., Sun, S. W., & Hua, K. L. (2014). Intraframe coding with massive dictionaries of tree-structured representations. In ICIMCS 2014 - Proceedings of the 6th International Conference on Internet Multimedia Computing and Service (pp. 201-204). (ACM International Conference Proceeding Series). Association for Computing Machinery. https://doi.org/10.1145/2632856.2632910