Exploration of Sequence-wise Optimized Parameters for Low Complexity Enhancement Video Coding (LCEVC) on 4K Content

This paper explores the configuration space of Low Complexity Enhancement Video Coding (LCEVC) for 4K SDR content and the VVC reference software VTM as base layer codec. The configuration space is spanned using a sweep over multiple values for the base layer QP and the LCEVC parameters sublayer 2 st...

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Published in:Proceedings of the ... IEEE International Conference on Acoustics, Speech and Signal Processing (1998) pp. 1 - 5
Main Authors: Benjak, Martin, Ostermann, Jorn
Format: Conference Proceeding
Language:English
Published: IEEE 06.04.2025
Subjects:
Acoustics
Codecs
Complexity theory
Convex hulls
LCEVC
scalable video coding
Signal resolution
Software
Space exploration
Speech coding
Speech processing
Video coding
ISSN:2379-190X
Online Access:Get full text
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Abstract This paper explores the configuration space of Low Complexity Enhancement Video Coding (LCEVC) for 4K SDR content and the VVC reference software VTM as base layer codec. The configuration space is spanned using a sweep over multiple values for the base layer QP and the LCEVC parameters sublayer 2 step width, scaling mode, number of processed picture planes, transformation type, and sequence-wise optimized upscaling filter coefficients. The best configurations are selected using a convex hull approach. Compared to the default LCEVC configuration, we achieve average BD-rate gains of 10.92% and 2.06% using 1d and 2d upscaling, respectively. However, our best possible LCEVC configuration still yields an average YCbCr BD-rate loss of 15.26% compared to VTM at full resolution.
AbstractList This paper explores the configuration space of Low Complexity Enhancement Video Coding (LCEVC) for 4K SDR content and the VVC reference software VTM as base layer codec. The configuration space is spanned using a sweep over multiple values for the base layer QP and the LCEVC parameters sublayer 2 step width, scaling mode, number of processed picture planes, transformation type, and sequence-wise optimized upscaling filter coefficients. The best configurations are selected using a convex hull approach. Compared to the default LCEVC configuration, we achieve average BD-rate gains of 10.92% and 2.06% using 1d and 2d upscaling, respectively. However, our best possible LCEVC configuration still yields an average YCbCr BD-rate loss of 15.26% compared to VTM at full resolution.
Author Benjak, Martin
Ostermann, Jorn
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  givenname: Jorn
  surname: Ostermann
  fullname: Ostermann, Jorn
  organization: Leibniz Universität Hannover,Institute for Information Processing,Hanover,Germany
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Snippet This paper explores the configuration space of Low Complexity Enhancement Video Coding (LCEVC) for 4K SDR content and the VVC reference software VTM as base...
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SubjectTerms Acoustics
Codecs
Complexity theory
Convex hulls
LCEVC
scalable video coding
Signal resolution
Software
Space exploration
Speech coding
Speech processing
Video coding
Title Exploration of Sequence-wise Optimized Parameters for Low Complexity Enhancement Video Coding (LCEVC) on 4K Content
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