Dr. Guowei Tong Profile

Dr. Guowei Tong

at MIIT

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Proceedings Article | 16 February 2022 Paper

An assessment and grading method of ultra-HD TVs based on subjective and objective evaluation

Shengyu Wei, Jia Cai, Huawei Xu, Linyi Huang, Chao Ye, Guowei Tong, Binhui Liu

Proceedings Volume 12083, 120832U (2022) https://doi.org/10.1117/12.2623422

KEYWORDS: High dynamic range imaging, Televisions, Standards development, Video, Image processing, Semantic video, Reliability, LCDs, Computer programming, Telecommunications

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The new breakthroughs of high dynamic range (HDR) technology have boosted the development of ultra-high-definition televisions (Ultra-HD TVs), and the evaluation standard of HDR video plays a significant role. But owing to the imperfect technique and standards, the current high-end products can hardly reach the requirements of Ultra-HD TVs. To improve the HDR assessment technique, a grading method for consumer-oriented products which balances the subjective and objective assessment is proposed to evaluate the HDR performance of Ultra-HD TVs. The subjective assessment is based on existing HDR standards, and the peak brightness, dynamic range, color gamut coverage and the absolute deviation of the electro-optical transfer function (EOTF) constitute the objective evaluation. With the proposed method, the videos which quality between the SDR and HDR standards can be divided into 3 or 4 grades by 4 metrics. The statistical results expound that many Ultra-HD TVs in the consumer-oriented market performs better than the HDR access standard, but still far from the professional-level, and the experiment results certify that the proposed method is an effective standard and can facilitate the standardized development on HDR performance of Ultra-HD TVs.

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