芸術科学会論文誌 投稿用カバーシート ■ 論文種類(以下のうちから一つ選択) ・原著論文 フルペーパー ■ 論文分野(1)〜3)のうちから一つ選択) 2) 科学系分野 ■ カテゴリ(1個以上選択) d) その他(プロジェクションマッピング) ■ 該当特集(以下のうちから一つ選択) ・一般論文 ■ 論文題名(和文、英文) View-dependent Projection Mapping Enhanced by Real Background ■ 著者名(和文、英文) Khuslen Battulga (Nonmember) Tadahiro Fujimoto (Member) ■ 著者所属(和文、英文) Graduate School of Engineering, Iwate University Graduate School of Engineering, Iwate University ■ 著者e-mail khuslenb@gmail.com fujimoto@cis.iwate-u.ac.jp ■ 連絡担当者の氏名、住所、所属、電話、Fax、e-mail 氏名:藤本 忠博 住所:〒020-8551 岩手県盛岡市上田4-3-5 所属:岩手大学 理工学部 システム創成工学科 知能・メディア情報コース    大学院 総合科学研究科 理工学専攻 デザイン・メディア工学コース 電話:019-621-6484 E-mail: fujimoto@cis.iwate-u.ac.jp ■ 論文概要(和文400字程度、英文100ワード程度) "Spatial augmented reality (SAR)" or "projection mapping" projects an image of a virtual object on the surface of a real object. A "view-dependent" display shows the virtual object with its correct appearance for an arbitrary viewer's position. If the virtual object and the real object have different shapes, the virtual object's image to project needs to be correctly distorted according to the viewer's position. Besides, the difference causes the real object's surface to have some empty areas onto which the virtual object is not projected. Such empty areas seriously degrade the viewer's feeling that the virtual object merges into the real world. We propose a method to eliminate undesired empty areas by projecting the real background behind the real object in a view-dependent way. Our method converts a real background's image captured by a fixed camera to an appropriate image for a viewer's position based on homography. This image conversion approximates the background's shape by a plane adjusted for an arbitrary viewer's position. The plane is determined by practical parameters interpolated on a 3D grid space. Consequently, the viewer does not feel the presence of the real object and feels the virtual object merging into the real world. ■ キーワード(和文5個程度、英文5個程度) spatial augmented reality (SAR), projection mapping, view-dependent display, virtual object, real background ====