Video Watercolorization using Bidirectional Texture Advection
ACM Transaction on Graphics (Proceedings of SIGGRAPH 2007), Volume 26, Number 3 - 2007
In this paper, we present a method for creating watercolor-like animation,
starting from video as input. The method involves two main
steps: applying textures that simulate a watercolor appearance; and
creating a simplified, abstracted version of the video to which the
texturing operations are applied. Both of these steps are subject to
highly visible temporal artifacts, so the primary technical contributions
of the paper are extensions of previous methods for texturing
and abstraction to provide temporal coherence when applied
to video sequences. To maintain coherence for textures, we employ
texture advection along lines of optical flow. We furthermore extend
previous approaches by incorporating advection in both forward
and reverse directions through the video, which allows for minimal
texture distortion, particularly in areas of disocclusion that are otherwise
highly problematic. To maintain coherence for abstraction,
we employ mathematical morphology extended to the temporal domain,
using filters whose temporal extents are locally controlled by
the degree of distortions in the optical flow. Together, these techniques
provide the first practical and robust approach for producing
watercolor animations from video, which we demonstrate with a
number of examples.
Images et films
Voir aussi
Our siggraph presentation (including videos) is available here.
You can also use our photoshop tutorials to reproduce the watercolor effect on still images.
Références BibTex
@Article\{BNTS07, author = "Bousseau, Adrien and Neyret, Fabrice and Thollot, Jo{\"e}lle and Salesin, David", title = "Video Watercolorization using Bidirectional Texture Advection", journal = "ACM Transaction on Graphics (Proceedings of SIGGRAPH 2007)", number = "3", volume = "26", year = "2007", keywords = "NPR, non-photorealistic rendering, abstract stylization, animated textures, temporal coherence", url = "http://artis.inrialpes.fr/Publications/2007/BNTS07" }