“Rich curve drawing”

  • ©Suguru Saito, Akane Kani, Youngha Chang, and Masayuki Nakajima



Interest Area:



    Rich curve drawing

Session/Category Title:   Non-Photorealistic Rendering



    In simple style drawings, like Comics and traditional cel animation, curved strokes are relatively important. Of course, the shape of the curve is the most important. However, subtle changes of curve width cannot be ignored. We propose a powerful method allowing subtle width changes to be applied to general 2D curve data. The algorithm is based on curvature information of the input curve, and keeps carefully the impression of the original curvature. The resulting image expresses a pen-and-ink drawing style.


    1. Nakajima, N., Kurihara, Y., Harada, T., Takagi, S., and Yoshimoto, F. 2001. Analysis of characteristics of curves in natural and artifical objects. IPSJ SIGNotes 2001-CG-104 2001, 89, 33–36.
    2. Steiner, A., Kimmel, R., and Bruckstein, A. M. 1998. Planar shape enhancement and exaggeration. Graphical Models and Image Processing 60, 2, 112–124.

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