ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
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37.11
Displaying 1-12 of 12 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    Pages Cover1-
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_Cover1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Index
    Pages Toc1-
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_Toc1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Biomedical effects caused by interocular discrepancy of stereoscopic images : Effects of vertical misalignment
    Hiroyasu UJIKE, Hiroshi WATANABE
    Article type: Article
    Session ID: 3DIT2013-2/HI2013-34
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_1
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Interocular discrepancy of stereoscopic images, which can be considered as factors for inducing visual fatigue of viewers, includes size difference, vertical shift, rotational shift, differences in luminance, chromaticity and time. The study investigates the effect of interocular vertical misalignment by manipulating it as four different steps for comparison while other conditions are controlled. Psychological (subjective scoring) and physiological (autonomic nervous activity) measurements are done while watching stereoscopic images in four sessions, each of which lasts 10 minutes. The results show the effects of interocular vertical misalignment on visual fatigue, while the effects seem decrease with time.
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  • A Study on Accommodation Responses in Viewing Integral Imaging
    Hitoshi HIURA, Sumio YANO, Masaki EMOTO, Tomoyuki MISHINA, Jun ARAI, K ...
    Article type: Article
    Session ID: 3DIT2013-3/HI2013-35
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_3
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Integral imaging enables to reconstruct the light rays of objects. It is expected that the accommodation response of the human vision would change depending on the depth position of the objects reconstructed by integral imaging. In this paper, we attempt to measure the accommodation responses of the real and integral imaging objects. The result shows, the accommodation responses depends on the depth position of the experimental indicators of the real and 3D targets. In addition, we demonstrate that the accommodation responses in viewing 3D targets set beyond ±0.2D, show similar in viewing real targets.
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  • Recent developments of super multi-View and holographic displays
    Yasuhiro TAKAKI
    Article type: Article
    Session ID: 3DIT2013-4/HI2013-36
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_7
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Holographic displays and super multi-view displays have been developed because they do not conflict with the physiological factors of human three-dimensional perception. In order to realize the holographic displays, the horizontally scanning holographic display and the holographic display module using the resolution redistribution technique have been developed. Various types of super multi-view displays have been developed, such as, the projection-type, the flat-panel type, and the hybrid type displays.
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  • Image preparation for 3D displays using CG software
    Noriji OISHI
    Article type: Article
    Session ID: 3DIT2013-5/HI2013-37
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_13
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The methods to make the stereoscopic image for multi view 3D display using CG software, without using the image processing program, were examined. Some multi view images were made by two different methods, one of then was making necessary shapes with polygons and mapping viewpoint images on them, and the other was the method to use user defined camera of MegaPOV. Then it was confirmed that the stereoscopic images were displayed by putting the lenticular-lens over those images. These methods are inferior in execution speed and efficiency, but they can easily make the same image as which made by image processing program. In addition, they can cope with the various combinations of lenticular-lens and display panels flexibly, furthermore the slant angle of lenticular-lens and the number of viewpoint could be chosen freely, so they seem to be useful for trial production and study.
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  • An Interpolation of an Object Outline and its Depth for Depth Addition to a Video
    Akihiro SASAKI, Naoki KAWAI
    Article type: Article
    Session ID: 3DIT2013-6/HI2013-38
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_17
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Making suitable depth map inside objects with complex shape costs expensive for 2D to 3D conversion in movie studios. We have proposed a depth setting technique that generates depth distribution over the entire object from a few anchor points given on the outline and edges of the object. It is still time-consuming and difficult to draw continuous changes over frames in the sequence when we apply the technique on videos. In this report, we propose a method for interpolating the position and the depth of anchor points that enable the suitable depth production on movies with less work-load.
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  • Improvement of Grayscale Representation of Screen Scanning-Type Super Multi-View Display
    Yuki TODA, Tatsuya UEDA, Yasuhiro TAKAKI
    Article type: Article
    Session ID: 3DIT2013-7/HI2013-39
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_21
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have developed the screen scanning-type super multi-view display, which solves the visual fatigue problem caused by the vergence-accommodation conflict. The screen scanning-type super multi-view display can generate approximately 1,000 viewpoints. However, it has low grayscale representation. In this study, the grayscale is represented using multiple viewpoints and the image intensity is altered for different viewpoints to improve the grayscale representation. Moreover, because the vertical resolution is much higher than the horizontal one, the one-dimensional screening technique is applied in the vertical direction.
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  • Interactions between a Stationary Stimulus and a Disparity-modulated Stimulus on Motion-in-depth
    Shigehito TANAHASHI, Ian HOWARD, Kazuhiko UKAI, Hiroyasu UJIKE
    Article type: Article
    Session ID: 3DIT2013-8/HI2013-40
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_25
    CONFERENCE PROCEEDINGS FREE ACCESS
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    A sensation of motion in depth occurs when a surface undergoing sinusoidal modulation of horizontal disparity is superimposed on a stationary stimulus. However, perceived motion in depth is not necessarily assigned to the display that changes in disparity. We investigated the stimulus factors, especially relative stimulus size, that determine which of two superimposed frontal displays appears to move in depth. Nine observers tracked the perceived to-and-fro motion in depth of each display by moving an unseen knob along a track in the median plane. Motion in depth was generally assigned to the smaller stimulus whichever was moving.
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  • [title in Japanese]
    Article type: Appendix
    Pages App1-
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_App1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Appendix
    Pages App2-
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_App2
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Appendix
    Pages App3-
    Published: February 25, 2013
    Released on J-STAGE: September 21, 2017
    DOIhttps://doi.org/10.11485/itetr.37.11.0_App3
    CONFERENCE PROCEEDINGS FREE ACCESS
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