| Presentation | 2015-09-04 Footsteps illusion in 3D and individual differences in stereoscopic vision Yoshiko Kumasaki, Ken Kihara, Sakuichi Ohtsuka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The footsteps illusion (FI) is a phenomenon in which a pair of dark- and light-gray rectangles moving at constant speed in the same direction appear to shuffle as they cross a background of black and white stripes. We hypothesize that FI is caused by the suppression of contour information of the rectangles. We compare the delay to FI onset in a 2D condition (i.e., contours suppressed by contrast diminishment) and in a 3D condition (i.e., subjective contours are enhanced by adding disparity to the vertical edges of the rectangles) when viewing by the central or peripheral vision. First, subjects are examined to determine if they could correctly perceive the disparities in a dynamic environment by using a series of stimuli. Unexpectedly, the percentage of subjects who were able to perceive all stimuli correctly was less than half. The FI onset delays of the subjects in the correct-perception group are tested. The average delay until FI was perceived in the 3D-central-vision condition was significantly increased compared with that in the other conditions. The results support our hypothesis. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Footsteps illusion / Subjective contour / 3D / Stereoscopic vision / Individual differences |
| Paper # | IMQ2015-18 |
| Date of Issue | 2015-08-28 (IMQ) |
| Conference Information | |
| Committee | IMQ |
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| Conference Date | 2015/9/4(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yuukou Horita(Univ. of Toyama) |
| Vice Chair | Kenji Sugiyama(Seikei Univ.) / Toshiya Nakaguchi(Chiba Univ.) |
| Secretary | Kenji Sugiyama(Canon) / Toshiya Nakaguchi(Nagoya Univ.) |
| Assistant | Shinichiro Saito(Sony) / Masaru Tsuchida(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Image Media Quality |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Footsteps illusion in 3D and individual differences in stereoscopic vision |
| Sub Title (in English) | |
| Keyword(1) | Footsteps illusion |
| Keyword(2) | Subjective contour |
| Keyword(3) | 3D |
| Keyword(4) | Stereoscopic vision |
| Keyword(5) | Individual differences |
| 1st Author's Name | Yoshiko Kumasaki |
| 1st Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 2nd Author's Name | Ken Kihara |
| 2nd Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| 3rd Author's Name | Sakuichi Ohtsuka |
| 3rd Author's Affiliation | Kagoshima University(Kagoshima Univ.) |
| Date | 2015-09-04 |
| Paper # | IMQ2015-18 |
| Volume (vol) | vol.115 |
| Number (no) | IMQ-216 |
| Page | pp.pp.33-36(IMQ), |
| #Pages | 4 |
| Date of Issue | 2015-08-28 (IMQ) |