| Presentation | 2021-06-25 Overhead Reduction for Point Cloud Wireless Delivery using Graph Signal Processing Soushi Ueno, Takuya Fujihashi, Toshiaki Koike-Akino, Takashi Watanabe, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Graph-based compression can compact the signal energy of three-dimensional (3D) point cloud and realize high quality 3D point cloud delivery over wireless channels. However, it requires significant communication overhead for decoding operation and such a large overhead. We propose a novel scheme for wireless point cloud delivery to significantly reduce the amount of communication overhead while maintaining high reconstruction quality. For this purpose, our scheme integrates two methods: Givens rotation and non-uniform quantization. The Givens rotation transforms the GFT basis matrix into angle parameters to keep unitarity of the matrix after the compression. The angle parameters are then non-uniformly quantized into the limited number of bits based on an empirical power cumulative distribution function (CDF). Evaluation results show the proposed scheme achieves a significant overhead reduction compared with the existing graph-based point cloud delivery schemes. For example, the proposed scheme achieves 28.6% overhead reduction and 2dB gain compared with the conventional point cloud delivery scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Point Cloud / Communication Overhead Reduction / Graph Signal Processing / Givens Rotation / Non-Uniform Quantization |
| Paper # | NS2021-29 |
| Date of Issue | 2021-06-17 (NS) |
| Conference Information | |
| Committee | PN / NS / OCS |
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| Conference Date | 2021/6/24(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hideaki Furukawa(KDDI Research) / Akihiro Nakao(Univ. of Tokyo) / Takeshi Hoshida(Fujitsu) |
| Vice Chair | Kohei Shiomoto(Tokyo City Univ.) / Ryuichi Sugizaki(Furukawa Electric) / Noboru Yoshikane(KDDI Research) / Tetsuya Oishi(NTT) |
| Secretary | Kohei Shiomoto(NTT) / Ryuichi Sugizaki(Univ. of Electr-Comm.) / Noboru Yoshikane(NTT) / Tetsuya Oishi(Chuo Univ.) / (NTT) |
| Assistant | Yojiro Mori(Nagoya Univ.) / Kenji Ishii(Mitsubishi Electric) / Kotaro Mihara(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Photonic Network / Technical Committee on Network Systems / Technical Committee on Optical Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Overhead Reduction for Point Cloud Wireless Delivery using Graph Signal Processing |
| Sub Title (in English) | |
| Keyword(1) | Point Cloud |
| Keyword(2) | Communication Overhead Reduction |
| Keyword(3) | Graph Signal Processing |
| Keyword(4) | Givens Rotation |
| Keyword(5) | Non-Uniform Quantization |
| 1st Author's Name | Soushi Ueno |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Takuya Fujihashi |
| 2nd Author's Affiliation | Osaka University(Osaka Univ.) |
| 3rd Author's Name | Toshiaki Koike-Akino |
| 3rd Author's Affiliation | Mitsubishi Electric Research Laboratories(MERL) |
| 4th Author's Name | Takashi Watanabe |
| 4th Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2021-06-25 |
| Paper # | NS2021-29 |
| Volume (vol) | vol.121 |
| Number (no) | NS-74 |
| Page | pp.pp.21-26(NS), |
| #Pages | 6 |
| Date of Issue | 2021-06-17 (NS) |