| Presentation | 2018-01-18 SVBRDF Acquisition Using Non-negative Matrix Factorization Tomoki Iwanaga, Yoshihiro Watanabe, Masatoshi Ishikawa, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we describe BRDF acquisition method using non-negative matrix factorization (NMF) aiming at fast BRDF measurement. Conventional methods for BRDF acquisition have a problem that it takes time to acquire since the light source and the observation direction have to been changed and sampled each time. In this paper, we focus on the property that the BRDFs are convex sets, and new BRDF can be represented by adding some BRDFs. We propose acquisition method using NMF which expresses the matrix by addition of frequent patterns. In addition, by processing spatially varying BRDFs (SVBRDF), we also make it possible to acquire each reflectance of objects with multiple reflectances at once, and it is expected that the whole processing time can be shortened. By conducting experiments in the simulation, we confirmed that it is possible to acquire SVBRDF at the same time with a small number of measurements. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Reflectance / BRDF / SVBRDF / NMF |
| Paper # | PRMU2017-121,MVE2017-42 |
| Date of Issue | 2018-01-11 (PRMU, MVE) |
| Conference Information | |
| Committee | PRMU / MVE / IPSJ-CVIM |
|---|---|
| Conference Date | 2018/1/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shinichi Sato(NII) / Yoshinari Kameda(Univ. of Tsukuba) |
| Vice Chair | Hironobu Fujiyoshi(Chubu Univ.) / Yoshihisa Ijiri(Omron) / Kenji Mase(Nagoya Univ.) |
| Secretary | Hironobu Fujiyoshi(AIST) / Yoshihisa Ijiri(NAIST) / Kenji Mase(Kyoto Univ.) / (NTT) |
| Assistant | Masato Ishii(NEC) / Yusuke Sugano(Osaka Univ.) / Takatsugu Hirayama(Nagoya Univ.) / Ryosuke Aoki(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Pattern Recognition and Media Understanding / Technical Committee on Media Experience and Virtual Environment / Special Interest Group on Computer Vision and Image Media |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | SVBRDF Acquisition Using Non-negative Matrix Factorization |
| Sub Title (in English) | |
| Keyword(1) | Reflectance |
| Keyword(2) | BRDF |
| Keyword(3) | SVBRDF |
| Keyword(4) | NMF |
| 1st Author's Name | Tomoki Iwanaga |
| 1st Author's Affiliation | The University of Tokyo(UTokyo) |
| 2nd Author's Name | Yoshihiro Watanabe |
| 2nd Author's Affiliation | The University of Tokyo/JST, PRESTO(UTokyo/JST) |
| 3rd Author's Name | Masatoshi Ishikawa |
| 3rd Author's Affiliation | The University of Tokyo(UTokyo) |
| Date | 2018-01-18 |
| Paper # | PRMU2017-121,MVE2017-42 |
| Volume (vol) | vol.117 |
| Number (no) | PRMU-391,MVE-392 |
| Page | pp.pp.81-86(PRMU), pp.81-86(MVE), |
| #Pages | 6 |
| Date of Issue | 2018-01-11 (PRMU, MVE) |