ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
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38.42
Displaying 1-10 of 10 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    Pages Cover1-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_Cover1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Index
    Pages Toc1-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_Toc1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • 3D Point Cloud Cluster Analysis Based on Principal Component Analysis of Normal-vectors
    Tomitaka HOTTA, Munetoshi IWAKIRI
    Article type: Article
    Session ID: 3DIT2014-41/IDY2014-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_1
    CONFERENCE PROCEEDINGS FREE ACCESS
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    As a 3D sensor and its application technology had been developed and popularized, technical demands for extraction of significant components from spatial models are increasing. Acquiring spatial information from a point cloud is very important and fundamental technique to process a large number of points. To acquire spatial information from the point cloud, we focused on a slant of a normal vector to obtain a geometric shape from the point cloud. In this paper, we propose 3D point cloud cluster analysis based on principal component analysis of normal vectors distribution. Our experimental results showed that the proposed method is robust to noises or spatial holes. Cluster analysis of this normal vector distribution indicated that eigenvalues are affected by a local neighborhood.
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  • Making Hologram from Multiview Image
    Takuya MATSUSHITA, Yutaka ENDO, Takeo KANADE, Takashi KAKUE, Tomoyoshi ...
    Article type: Article
    Session ID: 3DIT2014-42/IDY2014-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_5
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Holography is an ultimate three-dimensional (3-D) technology which can record and reconstruct objects with 3-D information. One of the methods that make hologram is to calculate propagation of the light from imaginary object on a computer. We take photo from around the object and perform SFM (Structure From Motion) that refers to the process of estimating 3-D structures from 2-D images. And then, we use the above-mentioned method to make hologram. This paper shows making hologram method, procedure, and actually created hologram.
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  • Vertical parallax added wide depth-range super multi-view display
    Takao WADA, Yasuhiro TAKAKI
    Article type: Article
    Session ID: 3DIT2014-43/IDY2014-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_9
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We previously proposed a wide depth-range (WDR) super multi-view (SMV) display. It can enlarge the display depth range of three-dimensional (3D) images without visual fatigue by combining the multiple SMV displays in the depth direction. The conventional display system could not correspond to the vertical movement of the observer because it provided only horizontal parallax. In this study, the display system was modified to provide pseudo vertical parallax by introducing a face tracking system, and consequently the system can display full-parallax 3D images.
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  • Integral three-dimensional imaging system with enhanced horizontal viewing zone by use of camera array
    Masato Miura, Naoto Okaichi, Jun Arai, Tomoyuki Mishina
    Article type: Article
    Session ID: 3DIT2014-44/IDY2014-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_13
    CONFERENCE PROCEEDINGS FREE ACCESS
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    An integral-imaging-based capture system with enhanced horizontal viewing zone by use of a camera array has been developed. We previously proposed a method of enlarging horizontal viewing zone by arranging a rectangle elemental image and tilting a lens array to avoid overlapping the elemental images. In order to capture the elemental images with enlarged horizontal viewing zone, three-dimensional images are captured by use of a lens array and camera array, and the both arrays are tilted in the same way as the lens array of the display system with enhanced horizontal viewing zone by use of the previously proposed method. We conducted an experiment to capture and display three-dimensional images and confirmed the validity of the proposed system.
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  • Comparisons of Tasks in First and Third Person Views using Video See-through HMD
    Takafumi KOIKE, Yukinari SASAKI, Ayato HARASHIMA
    Article type: Article
    Session ID: 3DIT2014-45/IDY2014-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_17
    CONFERENCE PROCEEDINGS FREE ACCESS
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    It is common to display first person view on HMD, which is used for virtual reality and augmented reality. On the other hand, video games use many views not only first person view but also several third person views and these views are already quite common for changing between different views in video games. We need to clarify user operations in various views for future free-viewpoint systems using HMDs. In this study, we performed experiments in three different views and measured the operating times of two tasks using video see-through head mounted display (HMD) for each.
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  • [title in Japanese]
    Article type: Appendix
    Pages App1-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_App1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (81K)
  • [title in Japanese]
    Article type: Appendix
    Pages App2-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_App2
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (81K)
  • [title in Japanese]
    Article type: Appendix
    Pages App3-
    Published: October 21, 2014
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.38.42.0_App3
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (81K)
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