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arXiv 2607.03494cs.CVcs.MMeess.IV

迈向标准化光场质量评估:混合主观基准测试与客观指标评估

Towards Standardized Light Field Quality Assessment: Hybrid Subjective Benchmarking and Objective Metric Evaluation

Electronics and Telecommunications Research Institute(电子和电信研究所);Dept. of Electronics and Informatics, Vrije Universiteit Brussel(布鲁塞尔自由大学电子与信息系);IMEC(imec公司);Department of Computer Science, Texas State University(德克萨斯州立大学计算机科学系);Embedded Computing Lab., Dept. of Computer Science and Statistics, Federal University of Santa Catarina(圣卡塔琳娜联邦大学计算机科学与统计系嵌入式计算实验室);Licks Attorneys(利克斯律师事务所);Federal University of Rio de Janeiro (UFRJ)(里约热内卢联邦大学);Ningbo Institute of Digital Twin, Eastern Institute of Technology(东理工大学宁波数字孪生研究院);Instituto Militar de Engenharia-IME, PGEE/PGED(军事工程学院-IME,PGEE/PGED)

Saeed Mahmoudpour, Mylene C. Q. Farias, Gi-Mun Um, Myllena A. Prado, Ismael Seidel, Leonardo de Sousa Marques, Leonardo Andrade, Shengyang Zhao, Carla L Pagliari

AI总结:

本文提出光场质量评估标准化工作流程,用于JPEG Pleno标准化活动。设计涵盖多种失真的基准,采用混合主观方法及客观指标分析,验证主观评分可靠性,评估指标性能,指出关键局限并提供框架。

摘要:

对沉浸式媒体编码解决方案进行基准测试,尤其在标准化背景下,需要可靠且可重复的主观质量评估程序以及在不同失真类型下都准确的客观质量指标。本文提出了一种用于光场质量评估的标准化工作流程,该流程在JPEG Pleno标准化活动的背景下开发和部署,它将基准生成、混合主观评估和客观指标分析集成到一个通用工作流程中。该基准旨在不仅涵盖传统的仅编码伪像,还包括在光场编码与视图合成和重建技术相伴的处理管道中出现的失真。提出了一种混合主观方法,通过将基于参考的质量评级与在感知模糊区域中的目标成对细化相结合来实现细粒度评估。使用两个队列的观察者之间的统计一致性分析来验证主观分数的可靠性。最后,根据全局预测准确性、在模糊质量区域中的局部一致性以及跨失真族的鲁棒性,系统地评估了大量客观指标。结果表明,几个指标对于仅编码刺激达成了很强的一致性,但当包括视图合成失真时,它们的性能持续下降。该分析进一步强调了视图池策略在未来光场质量指标设计中的重要性。这项工作为细粒度光场质量评估提供了一个可重复且可用于标准化的框架,同时识别了新兴编码管道下当前客观指标的关键局限性。主观注释数据集可在这个https URL上公开获得。

英文摘要:

Benchmarking immersive media coding solutions, especially in the standardization context, requires reliable and reproducible subjective quality assessment (QA) procedures, along with objective quality metrics that remain accurate across different distortion types. This paper presents a standardized workflow for light field QA, developed and deployed in the context of JPEG Pleno standardization activities, which integrates benchmark generation, a hybrid subjective evaluation, and objective metric analysis into a common workflow. The benchmark is designed to encompass not only traditional coding-only artifacts but also distortions that arise in processing pipelines in which light field encoding is accompanied with view synthesis and reconstruction techniques. A hybrid subjective method is proposed enabling fine-grained assessment by combining reference-anchored quality rating with targeted pairwise refinement in perceptually ambiguous regions. The reliability of subjective scores is verified using statistical consistency analyses between observers of two cohorts. Finally, a large set of objective metrics is systematically evaluated in terms of global prediction accuracy, local agreement in ambiguous quality regions, and robustness across distortion families. The results show that several metrics achieve strong agreement for coding-only stimuli, but their performance consistently drops when view synthesis distortions are included. The analysis further highlights the importance of view-pooling strategy in the design of future light field quality metrics. The work provides a reproducible and standardization-ready framework for fine-grained light field QA, while identifying key limitations of current objective metrics under emerging coding pipelines. The subjectively annotated dataset is publicly available at https://plenodb.jpeg.org/lfqa/objectivecfp.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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