| Paper Abstract and Keywords |
| Presentation |
2025-03-10 13:49
SGGX Parameter Estimation for Procedural Yarn Models
Risa Matsuda, Kei Iwasaki (Saitama Univ) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
This paper proposes an estimation method for SGGX distributions that model the normal distribution functions from yarn geometries generated by a procedural yarn model. To realistically reproduce the appearance of fabrics and yarns, it is essential to accurately model their optical properties based on fine geometric structures such as plies and fibers. The light reflectance model of yarns requires the statistical distribution of normals, and the SGGX distribution is used to represent the normal distribution of yarns with that of an ellipsoid．Previous cloth rendering methods set parameters of SGGX distributions manually. The proposed method estimates a covariance matrix of the normal distribution of a yarn, whose eigen vectors are identical to those of the SGGX distribution. Then the eigen values of the SGGX distribution are estimated by using the eigen vectors. We demonstrate the effectiveness of the proposed method by applying our method to several yarn geometries generated from the procedural yarn model. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Yarn / fiber / microflake / SpongeCake / SGGX / / / |
| Reference Info. |
ITE Tech. Rep., vol. 49, no. 10, AIT2025-79, pp. 148-149, March 2025. |
| Paper # |
AIT2025-79 |
| Date of Issue |
2025-03-03 (AIT) |
| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
|
| Conference Information |
| Committee |
AIT IIEEJ AS CG-ARTS |
| Conference Date |
2025-03-10 - 2025-03-10 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Tokyo Polytechnic Univ. (Nakano) |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Expressive Japan 2025 |
| Paper Information |
| Registration To |
AIT |
| Conference Code |
2025-03-AIT-IIEEJ-AS-ARTS |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
SGGX Parameter Estimation for Procedural Yarn Models |
| Sub Title (in English) |
|
| Keyword(1) |
Yarn |
| Keyword(2) |
fiber |
| Keyword(3) |
microflake |
| Keyword(4) |
SpongeCake |
| Keyword(5) |
SGGX |
| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Risa Matsuda |
| 1st Author's Affiliation |
Saitama University (Saitama Univ) |
| 2nd Author's Name |
Kei Iwasaki |
| 2nd Author's Affiliation |
Saitama University (Saitama Univ) |
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| Speaker |
Author-1 |
| Date Time |
2025-03-10 13:49:00 |
| Presentation Time |
12 minutes |
| Registration for |
AIT |
| Paper # |
AIT2025-79 |
| Volume (vol) |
vol.49 |
| Number (no) |
no.10 |
| Page |
pp.148-149 |
| #Pages |
2 |
| Date of Issue |
2025-03-03 (AIT) |