| Presentation | 2016-07-01 Design of directional discrete cosine frames Seisuke Kyochi, Taizo Suzuki, Yuichi Tanaka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a directional block transform, called directional discrete cosine transform (DDCT). Conventional directional transforms, such as curvelet and contourlet, can provide sparse image representations thatcontribute high quality image analysis and restoration. However, they are not hardware-friendly algorithms forpractical computation, since they typically require high computational cost, large amount of memory usage, andglobal memory access. Our directional block transform constructed from the discrete cosine transform (DCT) formsa Parseval block-wise frame and the supports of frame elements are identical or disjoint. In experiments, we evaluatethe proposed method with conventional directional block transforms in image recovery by a convex optimizationand show its effectiveness. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Block transform / discrete cosine transform / directionality / sparse representation / dual-tree transform |
| Paper # | IE2016-37 |
| Date of Issue | 2016-06-24 (IE) |
| Conference Information | |
| Committee | IE |
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| Conference Date | 2016/7/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Seishi Takamura(NTT) |
| Vice Chair | Takayuki Hamamoto(Tokyo Univ. of Science) / Atsuro Ichigaya(NHK) |
| Secretary | Takayuki Hamamoto(NTT) / Atsuro Ichigaya(Chiba Inst. of Tech.) |
| Assistant | Keita Takahashi(Nagoya Univ.) / Kei Kawamura(KDDI R&D Labs.) |
| Paper Information | |
| Registration To | Technical Committee on Image Engineering |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of directional discrete cosine frames |
| Sub Title (in English) | |
| Keyword(1) | Block transform |
| Keyword(2) | discrete cosine transform |
| Keyword(3) | directionality |
| Keyword(4) | sparse representation |
| Keyword(5) | dual-tree transform |
| 1st Author's Name | Seisuke Kyochi |
| 1st Author's Affiliation | The University of Kitakyushu(The Univ. Kitakyushu) |
| 2nd Author's Name | Taizo Suzuki |
| 2nd Author's Affiliation | University of Tsukuba(Univ. of Tsukuba) |
| 3rd Author's Name | Yuichi Tanaka |
| 3rd Author's Affiliation | Tokyo University of Agriculture and Technology(TUAT) |
| Date | 2016-07-01 |
| Paper # | IE2016-37 |
| Volume (vol) | vol.116 |
| Number (no) | IE-119 |
| Page | pp.pp.11-16(IE), |
| #Pages | 6 |
| Date of Issue | 2016-06-24 (IE) |