Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effective Clipart Image Vectorization Through Direct Optimization of
  Bezigons   Bezigons, i.e., closed paths composed of B\'ezier curves, have been widely
employed to describe shapes in image vectorization results. However, most
existing vectorization techniques infer the bezigons by simply approximating an
intermediate vector representation (such as polygons). Consequently, the
resultant bezigons are sometimes imperfect due to accumulated errors, fitting
ambiguities, and a lack of curve priors, especially for low-resolution images.
In this paper, we describe a novel method for vectorizing clipart images. In
contrast to previous methods, we directly optimize the bezigons rather than
using other intermediate representations; therefore, the resultant bezigons are
not only of higher fidelity compared with the original raster image but also
more reasonable because they were traced by a proficient expert. To enable such
optimization, we have overcome several challenges and have devised a
differentiable data energy as well as several curve-based prior terms. To
improve the efficiency of the optimization, we also take advantage of the local
control property of bezigons and adopt an overlapped piecewise optimization
strategy. The experimental results show that our method outperforms both the
current state-of-the-art method and commonly used commercial software in terms
of bezigon quality.

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The categories of this paper are: hep-th
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: math
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg