Title: Fast Colorization Using Edge and Gradient Constrains
Authors: Li, Yao
Lizhuang, Ma
Di, Wu
Citation: WSCG '2007: Full Papers Proceedings: The 15th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2007 in co-operation with EUROGRAPHICS: University of West Bohemia Plzen Czech Republic, January 29 – February 1, 2007, p. 309-316.
Issue Date: 2007
Publisher: Václav Skala - UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/wscg2007/Papers_2007/full/!WSCG2007_Full_Proceedings_Final-1.zip
ISBN: 978-80-86943-98-5
Keywords: kolorizace;rekolorizace
Keywords in different language: colorization;recolorization
Abstract: This paper proposes a fast but effective user-guided colorization algorithm. The main difficulty with colorization is its intensive computational cost. And the color sometimes diffuses from one region to others. We make full use of the information given by the gray-scale images, including the edge, gradient and gradient direction, to propagate color over regions from the user’s scribbles. We introduce a novel local distance definition which reduces the color confusion between two regions obviously. Two-Dimensional Programming is used to get the minimum distance from the scribbles to every pixel, and every pixel is blended by the chrominance with top three minimum distances. This speeds up the colorization process. Our algorithm can also be extended to recolorization and movie colorization. Experimental results show that our algorithm outperforms many state-ofthe- art algorithms from small amount of user scribbles. Besides, the implementation require less than 1 second on the image with 320*240 pixels.
Rights: © Václav Skala - UNION Agency
Appears in Collections:WSCG '2007: Full Papers Proceedings

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/11025

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