| Presentation | 2008-03-12 Image reconstruction from the primary visual cortex Tomomi HASHIGUCHI, Masato INOUE, Masato OKADA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Property to extract outline of the primary visual cortex comes from the function of the modules that prefer to respond the particular slope, so we often use Gabor filter as the simple model that has this property. In this study, we try to estimate an original image from the filter responses obtained through applying Gabor filter to an original image by Bayesian inference. It is just to estimate visual image from the information of the brain activity in the primary visual cortex. Concerning image restoration using Bayesian inference, in the case that prior probability or noise probability have translational symmetric property, we can easily do image restoration using Fourier transformation. Other, Gabor filter, a kind of the convolution filter, we can decrease amount of calculation by Fourier transformation. We try to estimate an original image from filter responses and estimate hyper parameters by maximizing marginalized likelihood. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | primary visual cortex / V1 model / convolution filter / Gabor filter / translational symmetry / Bayesian inference / Fourier transformation / hyper parameter estimation |
| Paper # | NC2007-121 |
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| Conference Information | |
| Committee | NC |
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| Conference Date | 2008/3/5(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) | Image reconstruction from the primary visual cortex |
| Sub Title (in English) | |
| Keyword(1) | primary visual cortex |
| Keyword(2) | V1 model |
| Keyword(3) | convolution filter |
| Keyword(4) | Gabor filter |
| Keyword(5) | translational symmetry |
| Keyword(6) | Bayesian inference |
| Keyword(7) | Fourier transformation |
| Keyword(8) | hyper parameter estimation |
| 1st Author's Name | Tomomi HASHIGUCHI |
| 1st Author's Affiliation | Department of Electrical Engineering and Bioscience, Waseda University() |
| 2nd Author's Name | Masato INOUE |
| 2nd Author's Affiliation | Department of Electrical Engineering and Bioscience, Waseda University |
| 3rd Author's Name | Masato OKADA |
| 3rd Author's Affiliation | Graduate School of Frontier Science, The University of Tokyo |
| Date | 2008-03-12 |
| Paper # | NC2007-121 |
| Volume (vol) | vol.107 |
| Number (no) | 542 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |