タケシマ　ユリコ   竹島　由里子    所属   メディア学部 メディア学科    職種   教授
言語種別	英語
発行・発表の年月	2005/01
形態種別	国際会議論文
査読	査読あり
標題	Extraction and LOD Control of Colored Interval
執筆形態	共著
掲載誌名	Proc. Visualization and Data Analysis 2005
掲載区分	国外
出版社・発行元	SPIE
巻・号・頁	pp.227-236
著者・共著者	Hiroko Nakamura, Yuriko Takeshima, Issei Fujishiro, Takafumi Saito
概要	Interval volume serves as a generalized isosurface and represents a three-dimensional subvolume for which the associated scalar filed values lie within a user-specified closed interval. In general, it is not an easy task for novices to specify the scalar field interval corresponding to their ROIs. In order to extract interval volumes from which desirable geometric features can be mined effectively, we propose a suggestive technique which extracts interval volumes automatically based on the global examination of the field contrast structure. Also proposed here is a simplification scheme for decimating resultant triangle patches to realize efficient transmission and rendition of large-scale interval volumes. Color distributions as well as geometric features are taken into account to select best edges to be collapsed. In addition, when a user wants to selectively display and analyze the original dataset, the simplified dataset is restructured to the original quality. Several simulated and acquired datasets are used to demonstrate the effectiveness of the present methods.