A novel low complexity local hybrid pseudo-SSIM-SATD distortion metric towards perceptual rate control
Conference paper
Joshi, Y., Loo, J., Shah, P., Rahman, S. and Chang, Y. 2013. A novel low complexity local hybrid pseudo-SSIM-SATD distortion metric towards perceptual rate control. 8th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB 2013). London, UK 05 - 07 Jun 2013 IEEE. pp. 1-6 https://doi.org/10.1109/BMSB.2013.6621695
Type | Conference paper |
---|---|
Title | A novel low complexity local hybrid pseudo-SSIM-SATD distortion metric towards perceptual rate control |
Authors | Joshi, Y., Loo, J., Shah, P., Rahman, S. and Chang, Y. |
Abstract | The front-end block-based video encoder applies an Image Quality Assessment (IQA) as part of the distortion metric. Typically, the distortion metric applies uniform weighting for the absolute differences within a Sub-Macroblock (Sub-MB) at any given time. As video is predominately designed for Humans, the distortion metric should reflect the Human Visual System (HVS). Thus, a perceptual distortion metric (PDM), will lower the convex hull of the Rate-Distortion (R-D) curve towards the origin, by removing perceptual redundancy and retaining perceptual clues. Structured Similarity (SSIM), a perceptual IQA, has been adapted via logarithmic functions to measure distortion, however, it is restricted to the Group of Picture level and hence unable to adapt to the local Sub-MB changes. This paper proposes a Local Hybrid Pseudo-SSIM-SATD (LHPSS) Distortion Metric, operating at the Sub-MB level and satisfying the Triangle Equality Rule (≤). A detailed discussion of LHPSS's Psuedo-SSIM model will illustrate how SSIM can be perceptually scaled within the distortion metric space of SATD using non-logarithmic functions. Results of HD video encoded across different QPs will be presented showing the competitive bit usage under IbBbBbBbP prediction structure for similar image quality. Finally, the mode decision choices superimposed on the Intra frame will illustrate that LHPSS lowers the R-D curve as homogeneous regions are represented with larger block size. |
Conference | 8th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB 2013) |
Page range | 1-6 |
Proceedings Title | 2013 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB) |
Series | IEEE International Symposium on Broadband Multimedia Systems and Broadcasting |
ISSN | 2155-5044 |
Electronic | 2155-5052 |
ISBN | |
Electronic | 9781467360470 |
Publisher | IEEE |
Publication dates | |
07 Jun 2013 | |
Online | 07 Oct 2013 |
Publication process dates | |
Deposited | 30 Jun 2015 |
Output status | Published |
Accepted author manuscript | File Access Level Open |
Copyright Statement | © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
Digital Object Identifier (DOI) | https://doi.org/10.1109/BMSB.2013.6621695 |
Scopus EID | 2-s2.0-84887830122 |
Web of Science identifier | WOS:000342351500021 |
Web address (URL) of conference proceedings | https://ieeexplore.ieee.org/xpl/conhome/6603436/proceeding |
Related Output | |
Has metadata | http://www.scopus.com/inward/record.url?eid=2-s2.0-84887830122&partnerID=MN8TOARS |
Language | English |
https://repository.mdx.ac.uk/item/85q55
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