Real-Time Image Abstraction by Directed Filtering
ShaderX7 Advanced Rendering Techniques (2009)
Available from www.shaderx7.com
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Abstract
In this chapter we present a framework of automatic image processing techniques that create high-quality, simplified, stylistic illustrations from color images, videos, and 3D renderings. Our method extends the approach of Winnemöller06 to use iterated bilateral filtering for abstraction and difference-of-Gaussians (DoG) for edge detection. We present enhancements to these techniques to improve the quality of the output by adapting them to the local orientation of the input.
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