Accuracy enhancement in intra- And inter-frame example search for lossless video coding

Koji Nemoto, Yusuke Kameda, Ichiro Matsuda, Susumu Itoh, Kyohei Unno, Sei Naito

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

Abstract

We previously proposed a lossless video coding method based on intra/inter-frame example search and probability model optimization. In this method, several examples, i.e. a set of pels whose neighborhoods are similar to a local texture of the target pel to be encoded, are searched from already encoded areas of the current and previous frames with integer pel accuracy. Probability distribution of an image value at the target pel is then modeled as weighted sum of the Gaussian functions whose peaked positions are given by the individual examples. Furthermore, model parameters that control shapes of the Gaussian functions are numerically optimized so that the resulting coding rate can be a minimum. In this paper, the above example search process is enhanced to allow fractional-pel positions for more accurate probability modeling.

Original languageEnglish
Title of host publicationInternational Workshop on Advanced Imaging Technology, IWAIT 2020
EditorsPhooi Yee Lau, Mohammad Shobri
PublisherSPIE
ISBN (Electronic)9781510638358
DOIs
Publication statusPublished - 1 Jan 2020
EventInternational Workshop on Advanced Imaging Technology, IWAIT 2020 - Yogyakarta, Indonesia
Duration: 5 Jan 20207 Jan 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11515
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Workshop on Advanced Imaging Technology, IWAIT 2020
CountryIndonesia
CityYogyakarta
Period5/01/207/01/20

Keywords

  • Example search
  • Lossless video coding
  • Parabola fitting
  • Probability model optimization

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  • Cite this

    Nemoto, K., Kameda, Y., Matsuda, I., Itoh, S., Unno, K., & Naito, S. (2020). Accuracy enhancement in intra- And inter-frame example search for lossless video coding. In P. Y. Lau, & M. Shobri (Eds.), International Workshop on Advanced Imaging Technology, IWAIT 2020 [115150U] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11515). SPIE. https://doi.org/10.1117/12.2567004