業績

2018年度

書籍・会議録

Issei Fujishiro, Jinwook Seo (editors)
Proceedings of PacificVAST 2018
The Journal of Visual Informatics, Vol. 2, No. 1, pp. 1-110, March 2018
2018年4月10日に神戸大学で開催されたPacificVAST2018の会議録.藤代は大会共同委員長および特集号ゲストエディアを務めた.本会議録には,ゲストエディタの前書きに続いて,採択された全論文9本が収蔵されている.PacificVASTはIEEE PacificVisシンポジウムの併催ワークショップとして2013年から毎年開催されているが,これまでは招待講演だけからプログラムが構成されていた.論文公募によるプログラム構成と雑誌特集号掲載は本年が初の試みである.

英文学術論文

Yusuke Ishikawa, Issei Fujishiro
TideGrapher: Visual analytics of tactical situations for rugby matches
The Journal of Visual Informatics, Vol. 2, No. 1, pp. 60-70, March 2018 [DOI: 10.1016/j.visinf.2018.04.007]
Various attempts at exploiting information visualization for sports have recently been reported in the literature, although it is still challenging to analyze continuous ball matches. In this paper, we propose a novel visual analytics system, called TideGrapher, to track the transition of tactile situations in a rugby match. With a particular focus on the side position of the ball, we designed a dedicated spatial substrate based on the spatio-temporal trajectory of the ball and provided a set of basic interactions. Quantitative analysis was strengthened by adding a new index, called initiative, to commonly used possession (ball occupation) and territory (dominance of territory). The feasibility of the proposed visual analytics system was proven empirically through application to datasets from real amateur and professional matches.

Yuriko Takakura, Masanori Nakayama, Issei Fujishiro
Visual Analysis for the Compositional Process of Composers in Spectral School
IIEEJ Transactions on Image Electronics and Visual Computing, Vol. 6, No. 1, pp. 22-30, June 2018
We propose a visual analysis approach for exploring the compositional process of composers in the Spectral School, with a particular focus on its sub-processes of sound analysis and synthesis. Spectral music has been one of the significant trends in contemporary music since the 1970s. Composers in the Spectral School use the acoustic properties of sounds as the basis of their compositional materials. One of the representative software systems they use is AudioSculpt, developed by IRCAM. We develop an accompanying system with AudioSculpt to manage the history of creating sounds with spectral analysis of sound materials. The salient feature of our system lies in its tessellated spectrogram space whose axes represent the elapsed time of the sound and the progress of composition. On the pixel-oriented, spatial substrate, the system makes it possible for users to analyze the compositional processes by using dedicated interactive manipulations. The present system can also be regarded as an initial attempt at managing the provenance of time-series events in the music visualization field. Our approach is intended to pave the way for composers and musicologists to analyze, develop, and share the compositional methodologies.

Issei Fujishiro, Naoko Sawada, Masanori Nakayama, Hsiang-Yun Wu, Kazuho Watanabe, Shigeo Takahashi, Makoto Uemura
TimeTubes: Visual Exploration of Observed Blazar Datasets
Journal of Physics: Conference Series, Vol. 1036, No. 1, Article No. 012011, June 2018 [DOI: 10.1088/1742-6596/1036/1/012011]
Blazars are attractive objects for astronomers to observe in order to burrow into the magnetic field in the relativistic jet. This paper presents TimeTubes as a novel visualization scheme that allows astronomers to interactively explore characteristic temporal variation patterns in observed blazar datasets. In the TimeTubes spatialization, the two Stokes parameters and their errors with a common timestamp are transformed into an ellipse. A series of such ellipses are aligned in parallel along the timeline to form a 3D volumetric tube. The resulting tube is then colorized by the observed intensities and colors of the blazar, and finally volume-rendered. A designated user interface is provided with visual exploration functions according to Shneiderman’s Visual Information Seeking Mantra. In the latest version, an auxiliary mechanism, called visual data fusion, was incorporated to ameliorate data- and mapping-inherent uncertainties for more efficient and effective visual exploration.

国内会議録論文(査読付)

市毛 大道,豊浦 正広,郷 健太郎,柏木 賢治,藤代 一成,茅 暁陽
線変形操作を用いた変視症検査方法(応用論文)
Visual Computing 2018口頭発表・招待講演・ポスター発表予稿集, pp. 8:1-8:4, 山形,2018年6月

朱 臻陽,豊浦 正広,郷 健太郎,藤代 一成,柏木 賢治,茅 暁陽
自然さ保存とコントラスト強調を考慮した色覚補償ための色変換アルゴリズム(技術論文)
Visual Computing 2018口頭発表・招待講演・ポスター発表予稿集, pp. 34:1-34:6, 山形,2018年6月

国際会議ポスタ(査読付)

Kazuki Miyazaki, Issei Fujishiro
Automatic Generation of Artworks Using Virtual Photoelastic Material
in Proceedings of ACM SIGGRAPH 2018 Posters, Vancouver (Canada), August 2018 [DOI: 10.1145/3230744.3230797]
Photoelasticity is known as one of the phenomena related to polarization and is defined as the change in birefringence of transparent material when internal force is applied. Interference fringes appear by irradiating the material with polarized light when viewing it through the polarizer. In this study, we attempt to apply the concept of photoelasticity to generative art. Assuming there is virtual stress distribution in the two-dimensional material, our method automatically generates artworks with photoelasticity. A GPU-based acceleration of the current implementation is also discussed.

口頭発表(招待)

宮澤 篤
新しい映像情報メディアにおけるディープラーニングの可能性
3D 合同シンポジウム 2018口頭発表, 東京,2018年6月

長尾 建
ホログラム時代の未来にあるもの
3D 合同シンポジウム 2018口頭発表・招待講演, 東京,2018年6月

藤代 一成
データ可視化技術の将来像―Restructuring IEEE VIS for the Future 参加報告
3D 合同シンポジウム 2018口頭発表・招待講演, 東京,2018年6月

登野 拓志
全景映像の適応的半透明ブレンディングによる視野狭窄の緩和と視野特性の評価
画像電子学会 第286回研究会,松本,2018年8月