| Presentation | 2006-05-26 A psychophysical quantification for hierachical representation of visual shape Yuki SUGIE, Kazuhiro SAKAMOTO, Masafumi YANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To discriminate little difference and gross similarity of shape is an important role of the visual system. Here we executed a bisection-task using human subjects and sets of shapes, morphed from line-symmetric to asymmetric, and analyzed the orientation of bisectors. These bisectors were line-symmetric for line-symmetric shapes, while these lines showed sudden discrepancies from the lines of symmetry at certain stages of morphing. These sudden discrepancies corresponded to the loss of line-symmetry in a relatively-lower spatial-frequency component of shape contours. These results served as a direct evidence that shapes are hierarchically represented among the spatial-frequency channels in the visual system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | human / psychophysics / visual shape / hierachical representation |
| Paper # | NC2006-3 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2006/5/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Neurocomputing (NC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A psychophysical quantification for hierachical representation of visual shape |
| Sub Title (in English) | |
| Keyword(1) | human |
| Keyword(2) | psychophysics |
| Keyword(3) | visual shape |
| Keyword(4) | hierachical representation |
| 1st Author's Name | Yuki SUGIE |
| 1st Author's Affiliation | Research Institute of Electrical Communication, Tohoku University() |
| 2nd Author's Name | Kazuhiro SAKAMOTO |
| 2nd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 3rd Author's Name | Masafumi YANO |
| 3rd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| Date | 2006-05-26 |
| Paper # | NC2006-3 |
| Volume (vol) | vol.106 |
| Number (no) | 79 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |