Circular scribble art is a kind of line drawing where the seemingly random, noisy and shapeless circular scribbles at microscopic scale constitute astonishing grayscale images at macroscopic scale. Such a delicate skill has rendered the creation of circular scribble art a tedious and time-consuming task even for gifted artists. In this work, we present a novel method for automatic synthesis of circular scribble art. The synthesis problem is modeled as tracing along a virtual path using a parametric circular curve. To reproduce the tone and important edge structure of input grayscale images, the system adaptively adjusts the density and structure of virtual path, and dynamically controls the size, drawing speed and orientation of parametric circular curve during the synthesis. We demonstrate the potential of our system using several circular scribble images synthesized from a wide variety of grayscale images. A preliminary experimental studying is conducted to qualitatively and quantitatively evaluate our method. Results report that our method is efficient and generates convincing results comparable to artistic artworks.

Our system flow consists of tracing path generation and circular scribble synthesis with parameters adjusted by tone control.

We are grateful to the anonymous reviewers for their comments and suggestions. The project was supported in part by the Ministry of Science and Technology of Taiwan (102-2221-E-007-055-MY3, 103-2221-E-007-065-MY3, 103-2220-E-007-012 and 104-2220-E-007-016). 

@inproceedings{chiu:2015:TFA,
  title={Tone-and Feature-Aware Circular Scribble Art},
  author={Chiu, Chun-Chia and Lo, Yi-Hsiang and Lee, Ruen-Rone and Chu, Hung-Kuo},
  booktitle={Computer Graphics Forum (Proc. Pacific Graphics)},
  volume={34},
  number={7},
  year={2015}
}

Full Paper (Best Student Paper Award)

Paper (135MB)