Journal of Graphic Science of Japan
Online ISSN : 1884-6106
Print ISSN : 0387-5512
ISSN-L : 0387-5512
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Volume 49, Issue 2
Displaying 1-3 of 3 articles from this issue
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  • Study of Different Shape Objects Which Have the Same Six Views
    Masayuki MIYAZAWA
    2015 Volume 49 Issue 2 Pages 3-11
    Published: 2015
    Released on J-STAGE: June 01, 2016
    DOIhttps://doi.org/10.5989/jsgs.49.2_3
    JOURNAL FREE ACCESS
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    　The orthographic projection is valid to describe object's shape in the two-dimensional surface. It is generally said that using the orthographic projection, even the most complex shape can be fully described. However, two pieces of objects which have the same borderline shapes on the six-views of each projection are invented. Furthermore , another object pairs with the same borderline shapes are confirmed too. In this paper, such objects are called Different Shape Objects which have the Same Six Views（DSO/SSV）.
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  • Multi Projection Method for India-ink Painting by Computer Graphics
    Lai LI, Tomokazu ISHIKAWA, Koji MIKAMI, Masanori KAKIMOTO, Kunio KONDO
    2015 Volume 49 Issue 2 Pages 13-20
    Published: 2015
    Released on J-STAGE: June 01, 2016
    DOIhttps://doi.org/10.5989/jsgs.49.2_13
    JOURNAL FREE ACCESS
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    Non-Photorealistic Rendering （NPR） has been widely used in CG animation, game, and other 3D object to express the effect of the painting. There are two important things in using NPR. First is how to paint, and second is how to compose a picture. Our interest is a projection method which focuses on how to compose India-ink paintings. There are two kinds of projections in painting. In this study, first, we study a multi projection method in order to support a realistic projection. Second, many people tend to use a special projection; perspective views with multiple vanishing points and parallel views with multiple oblique projections. To create such artistic rendering by CG, various images are connected to various cameras. In this paper, we propose a multi projection method with various viewpoints at single screen to render an India-ink painting.
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