BVI-VFI: A Video Quality Database for Video Frame Interpolation
This addresses a gap in video processing research by providing a quality database for video frame interpolation, which is incremental as it builds on existing VFI algorithms without introducing new methods.
The authors tackled the lack of understanding in human perception of video frame interpolation quality by creating BVI-VFI, a database with 540 distorted sequences from 36 source videos, collecting over 10,800 subjective ratings from 189 subjects, and benchmarking 33 objective metrics to show the need for better assessment methods.
Video frame interpolation (VFI) is a fundamental research topic in video processing, which is currently attracting increased attention across the research community. While the development of more advanced VFI algorithms has been extensively researched, there remains little understanding of how humans perceive the quality of interpolated content and how well existing objective quality assessment methods perform when measuring the perceived quality. In order to narrow this research gap, we have developed a new video quality database named BVI-VFI, which contains 540 distorted sequences generated by applying five commonly used VFI algorithms to 36 diverse source videos with various spatial resolutions and frame rates. We collected more than 10,800 quality ratings for these videos through a large scale subjective study involving 189 human subjects. Based on the collected subjective scores, we further analysed the influence of VFI algorithms and frame rates on the perceptual quality of interpolated videos. Moreover, we benchmarked the performance of 33 classic and state-of-the-art objective image/video quality metrics on the new database, and demonstrated the urgent requirement for more accurate bespoke quality assessment methods for VFI. To facilitate further research in this area, we have made BVI-VFI publicly available at https://github.com/danier97/BVI-VFI-database.