Assessment of quality of JPEG XL proposals based on subjective methodologies and objective metrics

Pinar Akyazi; Touradj Ebrahimi

doi:10.1117/12.2530196

6 September 2019 Assessment of quality of JPEG XL proposals based on subjective methodologies and objective metrics

Pinar Akyazi, Touradj Ebrahimi

Proceedings Volume 11137, Applications of Digital Image Processing XLII; 111370N (2019) https://doi.org/10.1117/12.2530196
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

The Joint Photographic Experts Group (JPEG) is currently in the process of standardizing JPEG XL, the next generation image coding standard that o↵ers substantially better compression efficiency than existing image formats. In this paper, the quality assessment framework of proposals submitted to the JPEG XL Call for Proposals is presented in details. The proponents were evaluated using objective metrics and subjective quality experiments in three di↵erent laboratories, on a dataset constructed for JPEG XL quality assessment. Subjective results were analyzed using statistical significance tests and presented with correlation measures between the results obtained from di↵erent labs. Results indicate that a number of proponents superseded the JPEG standard and performed at least as good as the state-of-the-art anchors in terms of both subjective and objective quality on SDR and HDR contents, at various bitrates.

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Citation Download Citation

Pinar Akyazi and Touradj Ebrahimi "Assessment of quality of JPEG XL proposals based on subjective methodologies and objective metrics", Proc. SPIE 11137, Applications of Digital Image Processing XLII, 111370N (6 September 2019); https://doi.org/10.1117/12.2530196

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