| Presentation | 2016-02-23 A Hybrid Image Classifier using a Cascade Classifier and a PSO-Optimized CNN Takuto Homma, Toshihiko Yamasaki, Kiyoharu Aizawa, Junpei Kawasaki, Ryosuke Chaya, Toshihiko Shindo, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, convolutional neural network (CNN) has shown its great performance and is used for various tasks. However, there are many hyper-parameters to optimize in CNN. Besides, CNN is not always 100% accurate. In this paper, We have developed methods (1) to optimize CNN using one of the evolutionary method, particle swarm optimization (PSO); and (2) to define con fidence of CNN using output probabilities to achieve a hybrid classifi er framework by combining CNN and a traditional cascade classifi er. As a result, we have improved the accuracy of Alexnet from 81.7% to 94.6%. Finally, we implemented our recognition system into a smartphone application called "Seat Selfi e" aiming at seat belt image recognition. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Convolutional neural network / Particle swarm optimization / Con dence-based rejection / Hybrid classifi er |
| Paper # | ITS2015-75,IE2015-117 |
| Date of Issue | 2016-02-15 (ITS, IE) |
| Conference Information | |
| Committee | ITS / IE / ITE-AIT / ITE-HI / ITE-ME / ITE-MMS / ITE-CE |
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| Conference Date | 2016/2/22(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tomotaka Nagaosa(Kanto Gakuin Univ.) / Seishi Takamura(NTT) / Tokiichiro Takahashi(TDU) / Masayuki Sato(Univ. of Kitakyushu) / Kazuhito Murakami(Aichi Prefectural Univ.) / Eiichi Miyashita(NHK) / Koji Minami(Mitsubishi Electric Corp.) |
| Vice Chair | Masahiro Fujii(Utsunomiya Univ.) / Tomotaka Wada(Kansai Univ.) / Takayuki Hamamoto(Tokyo Univ. of Science) / Atsuro Ichigaya(NHK) / / / Miki Haseyama(Hokkaido Univ.) |
| Secretary | Masahiro Fujii(AIST) / Tomotaka Wada(Utsunomiya Univ.) / Takayuki Hamamoto(NTT) / Atsuro Ichigaya(Chiba Inst. of Tech.) / (Tokyo Polytechnic Univ.) / (NICT) / Miki Haseyama(NTT) / (NHK) / (NHK) |
| Assistant | Kohei Ohno(Meiji Univ.) / Tetsuya Manabe(Saitama Univ.) / Keita Takahashi(Nagoya Univ.) / Kei Kawamura(KDDI R&D Labs.) |
| Paper Information | |
| Registration To | Technical Committee on Intelligent Transport Systems Technology / Technical Committee on Image Engineering / Technical Group on Artistic Image Technology / Technical Group on Human Information / Technical Group on Media Engineering / Technical Group on Multi-media Storage / Technical Group on Consumer Electronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Hybrid Image Classifier using a Cascade Classifier and a PSO-Optimized CNN |
| Sub Title (in English) | |
| Keyword(1) | Convolutional neural network |
| Keyword(2) | Particle swarm optimization |
| Keyword(3) | Con dence-based rejection |
| Keyword(4) | Hybrid classifi er |
| 1st Author's Name | Takuto Homma |
| 1st Author's Affiliation | The University of Tokyo(UTokyo) |
| 2nd Author's Name | Toshihiko Yamasaki |
| 2nd Author's Affiliation | The University of Tokyo(UTokyo) |
| 3rd Author's Name | Kiyoharu Aizawa |
| 3rd Author's Affiliation | The University of Tokyo(UTokyo) |
| 4th Author's Name | Junpei Kawasaki |
| 4th Author's Affiliation | HAKUHODO i-studio Inc.(IST) |
| 5th Author's Name | Ryosuke Chaya |
| 5th Author's Affiliation | HAKUHODO i-studio Inc.(IST) |
| 6th Author's Name | Toshihiko Shindo |
| 6th Author's Affiliation | HAKUHODO i-studio Inc.(IST) |
| Date | 2016-02-23 |
| Paper # | ITS2015-75,IE2015-117 |
| Volume (vol) | vol.115 |
| Number (no) | ITS-458,IE-459 |
| Page | pp.pp.235-240(ITS), pp.235-240(IE), |
| #Pages | 6 |
| Date of Issue | 2016-02-15 (ITS, IE) |