Calculation of average coding efficiency based on subjective quality scores

  title={Calculation of average coding efficiency based on subjective quality scores},
  author={Philippe Hanhart and Touradj Ebrahimi},
  journal={J. Vis. Commun. Image Represent.},

Rate-distortion evaluation for two-layer coding systems

The proposed Bjøntegaard model can be used to measure the compression efficiency of two-layer coding systems, as well as for other applications, e.g., to optimize the bit rate allocation between texture and depth in 3D video coding.

Rate-distortion video coding and uncertainties: to be blindly chasing marginal improvement or to be greener

A simple model to quantify the uncertainty/resolution of a quality metric is proposed, where confidence intervals (CI) of the quality scores predicted by the metric are computed with respect to existing observed ground truth (e.g. human observer opinion).

Subjective and Objective Quality Assessment of the SoftCast Video Transmission Scheme

This study aims to better understand the trade-offs between the LVCT parameters that can be tuned to improve the quality, and proposes a subjective quality assessment of SoftCast, pioneer and standard of the LV CT schemes.

Comparing VVC, HEVC and AV1 using Objective and Subjective Assessments

The subjective assessments indicate that, for the tested versions there is no significant difference between AV1 and HM, while the tested VTM version shows significant enhancements, offering a resource for compression performance evaluation and objective video quality assessment.

A Method of Codec Comparison and Selection for Good Quality Video Transmission Over Limited-Bandwidth Networks

  • J. Klink
  • Computer Science, Business
  • 2021
The author shows the process of preparing video footage, assessing its quality, determining the rate–distortion curves, and calculating the bitrate saving for pairs of examined codecs, and finds the obtained results are better than those previously presented in the literature, and more resistant to the quality metric used.

Neural Network Guided Perceptually Optimized Bit-Allocation for Block-Based Image and Video Compression

How distortion sensitivity directly leads to computationally beneficial perceptual optimization of irrelevance reduction and, thereby, of bit-allocation in image and video compression is shown.

Impact of automatic region-of-interest coding on perceived quality in mobile video

The evidence shows that ROI-based video encoding has higher perceived quality compared to normal video encoded at a similar bit rate, particularly in the lower bit rate range.

Compression Performance Analysis in HEVC

The overall evaluation study results show the coding efficiency of HEVC to be about twice higher than that of AVC.

Comparison of Compression Efficiency between HEVC/H.265, VP9 and AV1 based on Subjective Quality Assessments

  • Pinar AkyaziT. Ebrahimi
  • Computer Science
    2018 Tenth International Conference on Quality of Multimedia Experience (QoMEX)
  • 2018
This paper compares AV1 to VP9 and HEVC/H.265 from rate distortion point of view in a broadcasting use case scenario and compares the subjective comparisons and conclusions to those obtained by others in the state of the art as well to those measured by means of objective metrics such as PSNR.



Towards high efficiency video coding: Subjective evaluation of potential coding technologies

Comparison of the Coding Efficiency of Video Coding Standards—Including High Efficiency Video Coding (HEVC)

The results of subjective tests for WVGA and HD sequences indicate that HEVC encoders can achieve equivalent subjective reproduction quality as encoder that conform to H.264/MPEG-4 AVC when using approximately 50% less bit rate on average.

[JCT-VC contribution] AhG4: Subjective evaluation of HEVC intra coding for still image compression

The evaluation results demonstrate that HEVC intra coding outperforms standard codecs for still images with the average bit rate reduction ranging from 16% (compared to JPEG 2000 4:4:4) up to 43% (Compared to JPEG).

Subjective quality evaluation of the upcoming HEVC video compression standard

High Effciency Video Coding (HEVC) is the latest attempt by ISO/MPEG and ITU-T/VCEG to define the next generation compression standard beyond H.264/MPEG-4 Part 10 AVC. One of the major goals of HEVC

Subjective performance evaluation of the SVC extension of H.264/AVC

The results show that a reasonable degree of spatial and quality scalability can be supported with a bit rate overhead of less than or about 10% and an indistinguishable visual quality compared to the state of the art single layer coding.

Subjective evaluation of JPEG XR image compression

A procedure for subjective evaluation of the new JPEG XR codec for compression of still pictures is described in details and the obtained results show high consistency and allow an accurate comparison of codec performance.

How to evaluate objective video quality metrics reliably

An overview of the potential sources for uncertainties and inaccuracies in comparison studies of objective video quality metrics, related both to the method of comparison, possible inaccuracy in the subjective data, as well as processing of subjective data is given.

Efficient Prediction Structures for Multiview Video Coding

An experimental analysis of multiview video coding (MVC) for various temporal and inter-view prediction structures is presented, showing that prediction with temporal reference pictures is highly efficient, but for 20% of a picture's blocks on average prediction with reference pictures from adjacent views is more efficient.

Rate-constrained coder control and comparison of video coding standards

A unified approach to the coder control of video coding standards such as MPEG-2, H.263, MPEG-4, and the draft video coding standard H.264/AVC (advanced video coding) is presented. The performance of

Quality assessment of asymmetric stereo pair formed from decoded and synthesized views

When a stereo pair is formed from a decoded view and a synthesized view, it is unclear how the overall quality of the stereo pair should be assessed through objective quality metrics. In this paper,