VMV18

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A Fast and Efficient Semi-guided Algorithm for Flat Coloring Line-arts
(The Eurographics Association, 2018) Fourey, Sébastien; Tschumperlé, David; Revoy, David; Beck, Fabian and Dachsbacher, Carsten and Sadlo, Filip
We present a fast and efficient algorithm for the semi-supervised colorization of line-art images (e.g. hand-made cartoons), based on two successive steps: 1. A geometric analysis of the stroke contours, and their closing by splines/segments, and 2. A colorization step based on the filling of the corresponding connected components, either with random colors or by extrapolating user-defined color scribbles. Our processing technique performs image colorization with a similar quality as previous state of the arts algorithms, while having a lower algorithmic complexity, leading to more possible user interactivity.