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Proceedings Coherent Line Drawing

Author(s): Henry Kang, Seungyong Lee, Charles K. Chui.
Proceedings: 5th International Symposium on Non-Photorealistic Animation (NPAR'07), 2007.
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This paper presents a non-photorealistic rendering technique that automatically generates a line drawing from a photograph. We aim at extracting a set of coherent, smooth, and stylistic lines that effectively capture and convey important shapes in the image. We ?rst develop a novel method for constructing a smooth direction ?eld that preserves the ?ow of the salient image features. We then introduce the notion of ?ow-guided anisotropic ?ltering for detecting highly coherent lines while suppressing noise. Our method is simple and easy to implement. A variety of experimental results are presented to show the effectiveness of our method in producing self-contained, high-quality line illustrations.

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