Journal of Graphic Science of Japan
Online ISSN : 1884-6106
Print ISSN : 0387-5512
ISSN-L : 0387-5512
Volume 54, Issue 1
Displaying 1-3 of 3 articles from this issue
Research Paper
  • ─ Design to Cope with Human Body Deformation due to Movement ─
    Miki YAMAMUR, Michiko ISHIGAKI, Mieko INOMATA
    2020Volume 54Issue 1 Pages 3-
    Published: 2020
    Released on J-STAGE: March 01, 2021
    JOURNAL FREE ACCESS
     In this study, we designed a shirt that prioritized the novelty of the appearance, with the idea of “Clothes that looks tight but can be daily movement.” And,we considered the structure of clothes that can adapt to changes in the size and shape of the upper body due to movement. The shirt has a small amount of space around the chest, and the body part is twisted against the trunk to create wrinkles. The sleeve width added enough space to the upper arm. The front and back centerlines tilt 15 degrees when worn.
     A factor of wearing experiments is the amount of space around bust (2・4・7cm). The wearer is 10 female university students. Sensory evaluation (wear comfort, mobility, appearance) and clothes pressure were measured and analyzed.
     As a result, although the wrinkles by the twist at the time of wearing emphasizes “apparent tightness”, motion of the upper limbs, daily motion are possible, and the appearance was also high evaluated. Three shirts were able to wear and move.
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  • Kazushi MARUYA, Tomoko OHTANI
    2020Volume 54Issue 1 Pages 13-
    Published: 2020
    Released on J-STAGE: March 01, 2021
    JOURNAL FREE ACCESS
     When we observe shadows cast by multiple cuboids on a 3D surface of varying depths (a“staircase object”) from a diagonal angle, the retinal image can contain patterns that cause a famous illusion, called Café-wall illusion. In this study, we show that the illusion occurs in the direction opposite the distortions of shape caused by perspective projection. This suggests that the Café-wall illusion, as well as other geometric illusions, can be interpreted as a malfunction in the estimation of three-dimensional (3D) scene geometry from information given by the images projected on the retina. In addition, based on these facts and additional observations using 3 D computer graphics, we created two-dimensional computer graphics that can cause variations of Café-wall illusion from models of 3D scenes consisting of a staircase object and various objects that cast shadows on it.
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Art Reviw
  • ─Part 1: Making a Tactile Map that Shows the Road─
    Tatsuya HAG, Yoichi HOSOKAWA
    2020Volume 54Issue 1 Pages 27-
    Published: 2020
    Released on J-STAGE: March 01, 2021
    JOURNAL FREE ACCESS
     Hagi and Hosokawa have been involved in the research of tactile maps in the Hashimoto laboratory of the Department of Social Engineering at Nagoya Institute of Technology, and are currently developing three-dimensional hazard maps that visually impaired people can touch. Cut out the target location from the Japan map, perform image processing, convert it to STL data, and perform machining. As the first report, we introduce a tactile map that expands the road enough to pinch it with a finger so that the evacuation route can be identified.
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