- 著者
- Waldemar Heckel
- 出版者
- Blackwell Publishing
- 巻号頁・発行日
- 2006
- 著者
- Arai Shoji Tamura Akihiro Ishimaru Satoko Kadoshima Kazuyuki Lee Yong-Il Hisada Ken-ichiro
- 出版者
- Blackwell Publishing
- 雑誌
- Island Arc (ISSN:10384871)
- 巻号頁・発行日
- vol.17, no.4, pp.485-501, 2008-01-01
- 被引用文献数
- 14
金沢大学理工研究域自然システム学系
- 著者
- Endo Yuki Kanamori Yoshihiro Fukui Yukio Mitani Jun
- 出版者
- Blackwell Publishing
- 雑誌
- Computer graphics forum (ISSN:01677055)
- 巻号頁・発行日
- vol.31, no.4, pp.1435-1443, 2012-06
- 被引用文献数
- 1
This paper introduces a framework that can extract an alpha matte from a single image with Fresnel reflection, and that can composite other objects with the image such that plausible reflections are included. Our method handles reflections in a plane with small undulations, for example, a water surface with waves or a glossy tabletop. During the matting stage, our method first estimates the transmission color, which is assumed to be uniform, and then calculates a reflection image and alpha matte based on user markups. However, accurate extraction of the matte becomes challenging when a plane has small undulations because these create perturbations in the matte. We therefore propose a filter that can refine the matte effectively. In the compositing stage, the reflection of a composited object is synthesized by ray tracing in real time. We demonstrate the effectiveness of our method through comparisons with ground-truth data and results using natural images as inputs.
- 著者
- Kajii Atsushi Ui Takashi
- 出版者
- Blackwell Publishing
- 雑誌
- Japanese Economic Review (ISSN:13524739)
- 巻号頁・発行日
- vol.56, no.3, pp.332-351, 2005-09
- 被引用文献数
- 54
We present a model of incomplete information games, where each player is endowed with a set of priors. Upon arrival of private information, it is assumed that each player "updates" his set of priors to a set of posterior beliefs, and then evaluates his actions by the most pessimistic posterior beliefs. So each player's preferences may exhibit aversion to ambiguity or uncertainty. We define a couple of equilibrium concepts, establish existence results for them, and demonstrate by examples how players' views on uncertainty about the environment affect the strategic outcomes.