Non-Photorealistic Halftoning Using a Centroidal Voronoi Diagram and its Delaunay Triangulation

  • Inoue Kohei
    Department of Visual Communication Design, Kyushu University
  • Urahama Kiichi
    Department of Visual Communication Design, Kyushu University

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Other Title
  • 重心ボロノイ図とそのドロネー三角形分割によるノンフォトリアリスティックハーフトーニング
  • ジュウシン ボロノイズ ト ソノ ドロネー 3カクケイ ブンカツ ニ ヨル ノンフォトリアリスティック ハーフトーニング

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Non-photorealistic rendering (NPR) methods are presented for generating halftone images using a centroidal Voronoi diagram (CVD) and its Delaunay triangulation (DT). On the basis of the approximation of a CVD by hexagonal lattice, relations of brightness between an input image and its CVD and DT are derived and applied to brightness correction of halftone images. Experimental results showed that the halftone images generated by the proposed methods reproduced the continuous tone of the input image well.

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