| Presentation | 1998/2/3 Region-Otiented DCT Coding of Still Images Based on Voronoi Diagrams Kenichi WATANABE, Tetsuro NAGAE, Ichiro MATSUDA, Susumu ITOH, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a new region-oriented coding scheme of still images based on Voronoi diagrams. In this scheme, first an image is partitioned into Voronoi regions so that their boundaries can fit well the principal contours in the image. Then image signals in each Voronoi region are encoded using orthogonal transform. We introduce the hierarchical renewal method of positions of generators to improve performance of the segmentation. And the adaptive transform method which conducts one-dimensional DCT twice is utilized to reduce the amount of computation required for transform coding. Furthermore, this paper describes a technique which optimizes representative values of linear quantizers for DCT coefficients. Simulation results indicate that the proposed coding scheme achieves the almost same coding performance as the KLT-based scheme, although the former can remarkably reduce computational load compared with the latter. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | image coding / DCT / region-oriented coding / Voronoi diagram / orthogonal transform coding |
| Paper # | EID97-125,IE97-150(1998-02) |
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| Conference Information | |
| Committee | EID |
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| Conference Date | 1998/2/3(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Electronic Information Displays (EID) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Region-Otiented DCT Coding of Still Images Based on Voronoi Diagrams |
| Sub Title (in English) | |
| Keyword(1) | image coding |
| Keyword(2) | DCT |
| Keyword(3) | region-oriented coding |
| Keyword(4) | Voronoi diagram |
| Keyword(5) | orthogonal transform coding |
| 1st Author's Name | Kenichi WATANABE |
| 1st Author's Affiliation | Faculty of Science and Technology, Science University of Tokyo() |
| 2nd Author's Name | Tetsuro NAGAE |
| 2nd Author's Affiliation | Faculty of Science and Technology, Science University of Tokyo |
| 3rd Author's Name | Ichiro MATSUDA |
| 3rd Author's Affiliation | Faculty of Science and Technology, Science University of Tokyo |
| 4th Author's Name | Susumu ITOH |
| 4th Author's Affiliation | Faculty of Science and Technology, Science University of Tokyo |
| Date | 1998/2/3 |
| Paper # | EID97-125,IE97-150(1998-02) |
| Volume (vol) | vol.97 |
| Number (no) | 526 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |