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

Chia Chiang Ho; Ja Ling Wu; Wen-Huang Cheng

doi:10.1109/TCSVT.2005.856929

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

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

^*Corresponding author for this work

Institute of Electronics

Research output: Contribution to journal › Article › peer-review

17 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 language	English
Pages (from-to)	1365-1372
Number of pages	8
Journal	IEEE Transactions on Circuits and Systems for Video Technology
Volume	15
Issue number	11
DOIs	https://doi.org/10.1109/TCSVT.2005.856929
State	Published - 1 Nov 2005

Keywords

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

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10.1109/TCSVT.2005.856929

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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.",

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AB - 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.

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

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Keywords

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