Higher-resolution image enhances subjective depth sensation in natural scenes K Komine1, Y Tsushima2, N Hiruma1 |
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1Science and Technology Research Laboratories, Japan Broadcasting Corporation (NHK), Japan |
| Although enhancement of sensation induced by the images of ultra high-definition TV has been reported [Emoto et al, 2006, Displays][Masaoka et al, 2013, IEEE Transactions on Broadcasting], the effect of such high-definition images remains unclear. To examine if the resolution of image could be a factor of the improvement for the depth sensation of objects in natural scenes, we conducted a series of subjective assessment experiments under a variety of viewing conditions: 4k format projector with 193-inch screen, 28-inch 4k LCD display and 4.38-inch HD LCD display were used, and the viewing distances were 250cm, 105cm and 33cm (approximately 80°, 30° and 15° in the field-of-view) respectively. Fifteen short movies of natural scenes with higher- and lower-resolution were presented in random order. As a result of the experiments with 30 participants, the mean rating across viewing conditions for the sense of depth in objects, depth in space, realness and fineness showed significantly higher when the images displayed with higher resolution than that with lower resolution. These findings implicate that an improvement of image resolution could enhance the depth sensation in natural scenes as well as the depth perception from the luminance contrast in synthetic images [Tsushima, Komine, Hiruma, ECVP 2012]. |
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