Journal of Graphic Science of Japan

[title in Japanese]

[in Japanese]

1993 Volume 27 Issue 1 Pages 3-4
Published: 1993
Released on J-STAGE: August 25, 2010

DOIhttps://doi.org/10.5989/jsgs.27.3

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—Standardization of Computer Graphics—

[in Japanese]

1993 Volume 27 Issue 1 Pages 5-12
Published: 1993
Released on J-STAGE: August 25, 2010

DOIhttps://doi.org/10.5989/jsgs.27.5

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Roundness of Curvilinear Parts of Letterings Reffering to Curves of Conic Sections

Part2 about Capital Letters of C

Sadao NAKAMURA, Kazuhisa SUGIYAMA

1993 Volume 27 Issue 1 Pages 13-18
Published: 1993
Released on J-STAGE: August 25, 2010

DOIhttps://doi.org/10.5989/jsgs.27.13

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The roundness value of curve has been introduced by the authors. This paper presents an amendment of the previous method for analyzing general curves which need measurements using an image scanner and a personal computer, and numerical conversions. The method is applied to get numerical features of curvilinear parts of script letters C of lettering. An interrelated feature is also found between ellipses and paraboras.

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Computational Morphology based on Similarity in Natural Patterns

Generation of Mosaic Patterns

Kiyoe FUCHIGAMI

1993 Volume 27 Issue 1 Pages 19-24
Published: 1993
Released on J-STAGE: August 25, 2010

DOIhttps://doi.org/10.5989/jsgs.27.19

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We consider an effective use of CG in Formative Arts. We need to regard computers as the reflection of our thoughts and show the use of computers as a processor for the abstraction of forms and the logical expression of thoughts.
Therefor, we presents the method how computers and lie between imagination and visualization, and build algorithms based on the natural formes in computers and apply to F. A. This process can be called “Computational Morphology”. This paper shows the example of C. M. based on the similar patterns in nature.

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A CAD System Based on Design Pattrens in Machinery

Ichiro TANAKA, Hiromasa SUZUKI, Fumihiko KIMURA

1993 Volume 27 Issue 1 Pages 25-30
Published: 1993
Released on J-STAGE: August 25, 2010

DOIhttps://doi.org/10.5989/jsgs.27.25

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A machinery design process is proposed based on the routine design of machine elements. The routine design knowledge on each machine element, decribed in handbooks or catalogs, is represented in a machine readable form as a design pattern. The designer describes the product design in terms of design patterns placed in the work space and the constraints between them. The shapes of each machine element is detailed by the system in accordance with the design knowledge in design patterns and the constraints in the product design representation. The design knowledge in a design pattern consists of a set of parameters to represent requirements for the machine element, the parametric representations of parts' shapes that construct the machine element, and the knowledge for detailing shapes. Each design pattern deal with positions of parts that are related to the machine element. The complete geometric model of each part is generated by connecting the portions detailed in accordance with several design patterns. A prototype system has been implemented on an object oriented language, and some design examples are shown.

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An application of measuring 3-dimensional object by image processing

—A study of developing automatic measuring system of human body for apparel CAD system—

Naoki IIDA, Sadahiko NAGAE, Kinue HATAKEYAMA

1993 Volume 27 Issue 1 Pages 31-40
Published: 1993
Released on J-STAGE: August 25, 2010

DOIhttps://doi.org/10.5989/jsgs.27.31

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