Efficient metropolis path sampling for material editing and re-rendering

Tomoya Yamaguchi, Tatsuya Yatagawa, Shigeo Morishima

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

This paper proposes efficient path sampling for re-rendering scenes after material editing. The proposed sampling method is based on Metropolis light transport (MLT) and distributes more path samples to pixels whose values have been changed significantly by editing. First, we calculate the difference between images before and after editing to estimate the changes in pixel values. In this step, we render the difference image directly rather than calculating the difference in the images by separately rendering the images before and after editing. Then, we sample more paths for pixels with larger difference values and render the scene after editing by reducing variances of Monte Carlo estimators using the control variates. Thus, we can obtain rendering results with a small amount of noise using only a small number of path samples. We examine the proposed sampling method with a range of scenes and demonstrate that it achieves lower estimation errors and variances over the state-of-the-art methods.

本文言語English
ホスト出版物のタイトルPacific Graphics 2018 - 26th Pacific Conference on Computer Graphics and Applications, Short Papers and Posters Proceedings
編集者Hongbo Fu, Abhijeet Ghosh, Johannes Kopf
出版社IEEE Computer Society
ページ21-24
ページ数4
ISBN(電子版)9783038680734
DOI
出版ステータスPublished - 2018
イベント26th Pacific Conference on Computer Graphics and Applications, Pacific Graphics 2018 - Hong Kong, Hong Kong
継続期間: 2018 10月 82018 10月 11

出版物シリーズ

名前Proceedings - Pacific Conference on Computer Graphics and Applications
2018-October
ISSN(印刷版)1550-4085

Conference

Conference26th Pacific Conference on Computer Graphics and Applications, Pacific Graphics 2018
国/地域Hong Kong
CityHong Kong
Period18/10/818/10/11

ASJC Scopus subject areas

  • ソフトウェア
  • コンピュータ グラフィックスおよびコンピュータ支援設計
  • モデリングとシミュレーション

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