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Frame rate vs resolution : a subjective evaluation of spatiotemporal perceived quality under varying computational budgets
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Debattista, Kurt, Bugeja, Keith, Spina, Sandro, Bashford-Rogers, Thomas and Hulusić, Vedad (2017) Frame rate vs resolution : a subjective evaluation of spatiotemporal perceived quality under varying computational budgets. Computer Graphics Forum, 37 (1). pp. 363-374. doi:10.1111/cgf.13302 ISSN 0167-7055.
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Official URL: http://dx.doi.org/10.1111/cgf.13302
Abstract
Maximizing performance for rendered content requires making compromises on quality parameters depending on the computational resources available . Yet, it is currently unclear which parameters best maximize perceived quality. This work investigates perceived quality across computational budgets for the primary spatiotemporal parameters of resolution and frame rate. Three experiments are conducted. Experiment 1 (n = 26) shows that participants prefer fixed frame rates of 60 frames per second (fps) at lower resolutions over 30 fps at higher resolutions. Experiment 2 (n = 24) explores the relationship further with more budgets and quality settings and again finds 60 fps is generally preferred even when more resources are available. Experiment 3 (n = 25) permits the use of adaptive frame rates, and analyses the resource allocation across seven budgets. Results show that while participants allocate more resources to frame rate at lower budgets the situation reverses once higher budgets are available and a frame rate of around 40 fps is achieved. In the overall, the results demonstrate a complex relationship between frame rate and resolution's effects on perceived quality. This relationship can be harnessed, via the results and models presented, to obtain more cost-effective virtual experiences.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > T Technology (General) | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||
| Library of Congress Subject Headings (LCSH): | Real-time rendering (Computer graphics) | ||||||
| Journal or Publication Title: | Computer Graphics Forum | ||||||
| Publisher: | Blackwell Publishing | ||||||
| ISSN: | 0167-7055 | ||||||
| Official Date: | 28 September 2017 | ||||||
| Dates: |
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| Volume: | 37 | ||||||
| Number: | 1 | ||||||
| Page Range: | pp. 363-374 | ||||||
| DOI: | 10.1111/cgf.13302 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Date of first compliant deposit: | 2 October 2017 | ||||||
| Date of first compliant Open Access: | 28 September 2018 | ||||||
| Funder: | Royal Society (Great Britain). Industrial Fellowship | ||||||
| Grant number: | F130053 |
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