David Tschumperlé has posted an extensive summary of his work on G'MIC, an image-processing tool. One of those projects was comic colorization: "The idea is very simple: Instead of forcing the artist to do all the colorization job by himself, we just ask him to put some colored key-points here and here, inside the different image regions to fill-in. Then, the algorithm tries to guess a probable colorization of the drawing, by analyzing the contours in the image and by interpolating the given colored key-points with respect to these contours." (LWN looked at G'MIC in August 2014).

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