Symmetry in natural image contour : exploring cortical representation of shape by symmetry

DOI Web Site 5 References
  • KUREMATSU Ken
    College of Media Arts, Science and Technology, School of Informatics, University of Tsukuba
  • SAKAI Ko
    Graduate School of Systems and Information Engineering, University of Tsukuba

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Other Title
  • 自然画像における輪郭の対称性 : シンメトリーによる形状の皮質表現の探索(視聴覚技術,ヒューマンインタフェースおよび一般)
  • 自然画像における輪郭の対称性 : シンメトリーによる形状の皮質表現の探索
  • シゼン ガゾウ ニ オケル リンカク ノ タイショウセイ : シンメトリー ニ ヨル ケイジョウ ノ ヒシツ ヒョウゲン ノ タンサク

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Description

Symmetry is a significant factor for deriving the direction of figure. Although symmetry is common among both biological shapes and artificial objects, and known as a Gestalt factor, few studies have quantified its nature and analyzed the function quantitatively. We focus on symmetry in contours of natural images, and establish a geometrical index that describes the degree of symmetry (DoS) inherent in arbitrary contour. To examine whether DoS matches with the perception of symmetry, we carried out psychophysical experiments. The results showed a good agreement between the perception of symmetry and DoS where the participants showed confidence/consistency in the perception, indicating that DoS reflect the perception of symmetry and that perception of symmetry depends surely on the geometrical degree of symmetry.

Journal

  • ITE Technical Report

    ITE Technical Report 37.12 (0), 13-16, 2013

    The Institute of Image Information and Television Engineers

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