| Presentation | 2001/6/15 Hierarchical Transmission of DCT Coefficients Using Multi-Code DS/SS Modulation Masaru HONJO, Satoshi MAKIDO, Takaya YAMAZATO, Hiraku OKADA, Masaaki KATAYAMA, Akira OGAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose a hierarchical transmission of image signal using multi-code DS/SS modulation. DCT is originally invoked in the image coding at the aim of compacting the input variance and compressing efficiently. We achieve an error torelant transmission system by using this property in transmit energy. We introduce the energy assingment (EA) to reduce the channel noise in hierarchical transmission. Assigning an appropriate transmitt energy corresponding to its variance, we show that it is possible to maintain the picuture quality even in low channel condition. The analysis is carried out to show the effectiveness of our scheme using 2-D Gauss-Markov random field in the case of MC DS/SS modulation used. We also verify the same characteristic in several sample movies. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | image transmission / DCT / multi-code DS/SS / hierarchical transmission |
| Paper # | SST2001-17,SAT2001-21 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2001/6/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Hierarchical Transmission of DCT Coefficients Using Multi-Code DS/SS Modulation |
| Sub Title (in English) | |
| Keyword(1) | image transmission |
| Keyword(2) | DCT |
| Keyword(3) | multi-code DS/SS |
| Keyword(4) | hierarchical transmission |
| 1st Author's Name | Masaru HONJO |
| 1st Author's Affiliation | Graduate School of Engineering, Nagoya University() |
| 2nd Author's Name | Satoshi MAKIDO |
| 2nd Author's Affiliation | Graduate School of Engineering, Nagoya University |
| 3rd Author's Name | Takaya YAMAZATO |
| 3rd Author's Affiliation | Center for Information Media studies, Nagoya University |
| 4th Author's Name | Hiraku OKADA |
| 4th Author's Affiliation | Center for Information Media studies, Nagoya University |
| 5th Author's Name | Masaaki KATAYAMA |
| 5th Author's Affiliation | Graduate School of Engineering, Nagoya University |
| 6th Author's Name | Akira OGAWA |
| 6th Author's Affiliation | Department of Information Science, School of Science and Technology, Meijo University |
| Date | 2001/6/15 |
| Paper # | SST2001-17,SAT2001-21 |
| Volume (vol) | vol.101 |
| Number (no) | 128 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |