Effects of motion picture frame rate on image quality. Allison, R. S., Fujii, Y., & Wilcox, L. M. In Proceedings of ECVP 2017, Perception, pages 111. 2017. ![Effects of motion picture frame rate on image quality [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper -1 abstract bibtex Modern digital cinema supports much higher frame rates (HFR) than the traditional 24 frames per second (fps). Theoretically, higher fidelity should allow viewers to see more detail. We filmed image sequences of a male and female actor (in different costume) at all combinations of two resolutions (2k and 4k), three frame rates (24, 48 and 60 fps), and two shutter angles (180\degree and 358\degree ). We asked viewers (N = 26) to watch 20-s movie clips and to rate (1) the image sharpness and (2) the quality of the motion. Motion quality and image sharpness ratings improved with increasing frame rate, especially from 24 to 48 fps. The ratings of sharpness for 180\degree shutter angle were higher than for 358\degree , consistent with the expectation of more motion blur in the latter. The benefit of higher resolution depended on frame rate: at 24 fps, ratings of sharpness for the 4k sequences were similar to, or even lower than, ratings for the 2k sequences. We propose that motion blur was more apparent in the low frame rate 4k imagery because it could be compared with high resolution, static, portions of the same image. Our results show that na\:ive observers perceive enhanced detail in moving fabrics and costumes in HFR film. This improved perception of detail could underlie both the positive and negative reactions to HFR film, depending on the nature of the content and whether it lends itself to such high fidelity.
@incollection{Allison:vn,
abstract = {Modern digital cinema supports much higher frame rates (HFR) than the traditional 24 frames per second (fps). Theoretically, higher fidelity should allow viewers to see more detail. We filmed image sequences of a male and female actor (in different costume) at all combinations of two resolutions (2k and 4k), three frame rates (24, 48 and 60 fps), and two shutter angles (180\degree and 358\degree ). We asked viewers (N = 26) to watch 20-s movie clips and to rate (1) the image sharpness and (2) the quality of the motion.
Motion quality and image sharpness ratings improved with increasing frame rate, especially from 24 to 48 fps. The ratings of sharpness for 180\degree shutter angle were higher than for 358\degree , consistent with the expectation of more motion blur in the latter. The benefit of higher resolution depended on frame rate: at 24 fps, ratings of sharpness for the 4k sequences were similar to, or even lower than, ratings for the 2k sequences. We propose that motion blur was more apparent in the low frame rate 4k imagery because it could be compared with high resolution, static, portions of the same image.
Our results show that na\:ive observers perceive enhanced detail in moving fabrics and costumes in HFR film. This improved perception of detail could underlie both the positive and negative reactions to HFR film, depending on the nature of the content and whether it lends itself to such high fidelity.
},
annote = {ECVP 2017 Berlin, Germany
Poster/Talk presented at the European Conference on Visual Perception 2017, Berlin, Germany. Retrieved from URL: http://journals.sagepub.com/page/pec/collections/ecvp-abstracts/index/ecvp-2017 },
author = {Allison, R. S. and Fujii, Y. and Wilcox, L. M.},
booktitle = {Proceedings of ECVP 2017, Perception},
date-added = {2018-11-27 12:57:16 -0500},
date-modified = {2019-02-03 09:00:21 -0500},
keywords = {Image Quality},
pages = {111},
title = {Effects of motion picture frame rate on image quality},
url = {http://journals.sagepub.com/page/pec/collections/ecvp-abstracts/index/ecvp-2017},
url-1 = {http://journals.sagepub.com/page/pec/collections/ecvp-abstracts/index/ecvp-2017},
year = {2017},
url-1 = {http://journals.sagepub.com/page/pec/collections/ecvp-abstracts/index/ecvp-2017}}
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