| Presentation | 2016-02-22 Reduction of computational cost in ICA-DCT hybrid coding for still image Kazuya Kawamura, Masashi Kameda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Independent Component Analysis (ICA) can derive the inherent set of bases which are correspond to local features of a given input image. Especially, the performance to keep the local features using ICA bases is superior to that of DCT in non-stationary region of image. We have been proposed ICA-DCT hybrid typed image coding. In this method, each signal of small region in the input image is transformed by ICA or DCT appropriately in the viewpoint of the reduction of the bit rate, after an input image is divided into small blocks. However, this method has a problem that computational cost for image segmentation is laborious, because image segmentation is achieved by comparing both entropy directly in each small block. This paper presents the reduction method for the computational cost of image segmentation by using another parameter L_0 norm instead of the entropy. As the result, it is possible to reduce about 98[%] of the computational cost of image segmentation compared with conventional method at the same coding performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Still image coding / Discrete cosine transform / Independent component analysis / Image segmentation / L0 norm |
| Paper # | ITS2015-72,IE2015-114 |
| 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) | Reduction of computational cost in ICA-DCT hybrid coding for still image |
| Sub Title (in English) | |
| Keyword(1) | Still image coding |
| Keyword(2) | Discrete cosine transform |
| Keyword(3) | Independent component analysis |
| Keyword(4) | Image segmentation |
| Keyword(5) | L0 norm |
| 1st Author's Name | Kazuya Kawamura |
| 1st Author's Affiliation | Iwate Prefectural University(Iwate Prefectural Univ.) |
| 2nd Author's Name | Masashi Kameda |
| 2nd Author's Affiliation | Iwate Prefectural University(Iwate Prefectural Univ.) |
| Date | 2016-02-22 |
| Paper # | ITS2015-72,IE2015-114 |
| Volume (vol) | vol.115 |
| Number (no) | ITS-458,IE-459 |
| Page | pp.pp.113-118(ITS), pp.113-118(IE), |
| #Pages | 6 |
| Date of Issue | 2016-02-15 (ITS, IE) |