Alex Mackin, Mariana Afonso, Fan Zhang, and David Bull
BVI-SR contains 24 unique video sequences at a range of spatial resolutions up to UHD-1 (3840p). These sequences were used as the basis for a large-scale subjective experiment exploring the relationship between visual quality and spatial resolution when using three distinct spatial adaptation filters (including a CNN-based super-resolution method). The results demonstrate that while spatial resolution has a significant impact on mean opinion scores (MOS), no significant reduction in visual quality between UHD-1 and HD resolutions for the superresolution method is reported. A selection of image quality metrics were benchmarked on the subjective evaluations, and analysis indicates that VIF offers the best performance.
[DOWNLOAD] subjective data, instructions and related file.
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If this content has been mentioned in a research publication, please give credit to the University of Bristol, by referencing the following paper:
 A. Mackin, M. Afonso, F. Zhang and D. Bull, “A study of subjective video quality at various spatial resolutions”, IEEE ICIP, 2018.
 A. Mackin, M. Afonso, F. Zhang and D. Bull,”BVI-SR Database“, 2020.