A practical foveation-based rate-shaping mechanism for MPEG videos

Chia Chiang Ho*, Ja Ling Wu, Wen-Huang Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Foveation is one of the nonuniform resolution properties of the human visual system. Recently, different foveation models are proposed and utilized for image and video coding, for the sake of bit-rate saving with no or minor perceptual quality distortion. In the first part of this paper, we propose an efficient and practical DCT-domain foveation model, which is deduced from existing experimental results. In the second part, we present a foveation-based rate-shaping mechanism for MPEG bitstreams, as an application example of the proposed foveation model. The rate shaper is based on eliminating DCT coefficients embedded in MPEG bitstreams. An efficient rate-shaping mechanism is developed to meet various bit-rate requirements. Our simulation confirmed that the proposed foveation model and the rate-shaping mechanism are practical for real-world usage.

Original languageEnglish
Pages (from-to)1365-1372
Number of pages8
JournalIEEE Transactions on Circuits and Systems for Video Technology
Volume15
Issue number11
DOIs
StatePublished - 1 Nov 2005

Keywords

  • Foveated image processing
  • Foveation model
  • Human visual system (HVS)
  • MPEG
  • Rate shaping

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