Journal of Graphic Science of Japan
Online ISSN : 1884-6106
Print ISSN : 0387-5512
ISSN-L : 0387-5512
Volume 49, Issue 1
Displaying 1-3 of 3 articles from this issue
  • Yoshihiro HAGIHARA, Yukari HAGIHARA, Adiljan YIMIT, Tasuku MIYOSHI, Mo ...
    2015 Volume 49 Issue 1 Pages 3-12
    Published: 2015
    Released on J-STAGE: March 01, 2016
    JOURNAL FREE ACCESS
    Although Thin-plate spline is a suitable method for morphing a 3D model, the processing time is longer than other methods. In this paper, a scheme using Thin-plate spline to morph the joints of a 3D polygon model is studied. By performing local processing based on the distance, it is shown that high speed and adequate morphing can be carried out. When morphing the joints of a 3D polygon model, an enormous number of control points exist. The number of targets is relatively small. The position of the control point involved with the morphing coefficient is local. Distance-based local control points are selected for each target. The coefficient can be calculated based on this local control points. In this method, the respective morphing coefficient needs to be determined for each target. However, in the scheme for morphing the joints of a 3D polygon model, the number of target vertices is small. Therefore, this method has a higher processing speed than conventional methods. This fact is showed empirically in this paper. Compared to the results with conventional method, this method results in almost the same position of vertices.
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  • Momoko HAYASHI, Guanwen ZHANG, Kiyofumi MOTOYAMA
    2015 Volume 49 Issue 1 Pages 13-21
    Published: 2015
    Released on J-STAGE: March 01, 2016
    JOURNAL FREE ACCESS
    We believe perceiving and interpreting images (image literacy) by looking at them directly rather than through language, is important. This paper intends to analyze the property of the fixations when a person looks at photographs as a clue to a more effective manner to interpret an images. The analysis of the fixation behaviour was performed with two experiments: first, by using the concept of Depth of Field to measure the fixation points in photographs; and second, by clustering fixation points. In the second experiment, we analyzed the cluster distance, range, time span and quantity through feature vectors and clustering using k-means++. As a result, the emergence of common fixation properties were observed.
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