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Title: A circle-based vectorization algorithm for drawings with shadows
Authors: Bonnici, Alexandra
Camilleri, Kenneth P.
Keywords: Shades and shadows
Computer-aided design
Issue Date: 2013
Publisher: ACM
Citation: Bonnici, A., & Camilleri, K. (2013, July). A circle-based vectorization algorithm for drawings with shadows. International Symposium Sketch-Based Interfaces and Modeling, SBIM 2013 - Part of the Joint Symposium on Computational Aesthetics, Sketch-Based Interfaces and Modeling, and Non-Photorealistic Animation and Rendering, Expressive 2013, Anaheim. 9-78.
Abstract: Vectorization algorithms described in the literature assume that the drawings being vectorized are either binary images or have a clear white background. Sketches of artistic objects however also contain shadows which help the artist to portray intent, particularly in potentially ambiguous sketches. Such sketches are difficult to binarise since the shading strokes make these sketches non bimodal. For this reason, we describe a circle-based vectorization algorithm that uses signatures obtained from sample points on the line strokes to identify and vectorize the line strokes in the sketch. We show that the proposed algorithm performs as well as other vectorization techniques described in the literature, despite the shadows present in the sketch.
Description: This work is funded by the University of Malta, under the research grant SCERP02-03.
Appears in Collections:Scholarly Works - FacEngSCE

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