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Extracting Accentuation Effects Using a Painted Image

2004; Volume: 58; Issue: 10 Linguagem: Inglês

10.3169/itej.58.1483

1881-6908

Tomoya Sato, Yoshinori Dobashi, Tsuyoshi Yamamoto, Katsumi Takao, Ken Anjyo,

3D Surveying and Cultural Heritage

In a cel animation workplace, non-photorealistic rendering (NPR) techniques are often applied to a 3D scene model, which is constructed by referring to the 2D hand-drawn images of the scene. There exist a lot of scene features that must be modeled from the 2D information. The accentuation effects are amongst the most importantfeatures in a hand-drawn scene. In this context, accentuation refers to adding hand-drawn shading of the scene. Thespecific region that an artist wishes the viewer to observe is drawn more brightly than the other regions. We propose a method of extracting the accentuation effects from a single 2D painted image of an animated scene. This method enables the automatic addition of the accentuation effects to each frame of the animation, observed from other viewpoints.