Authors:
Stefan Krumpen
;
Michael Weinmann
and
Reinhard Klein
Affiliation:
University of Bonn, Germany
Keyword(s):
Reflectance Modeling, Bidirectional Texture Functions, Interactive Rendering.
Related
Ontology
Subjects/Areas/Topics:
Animation and Simulation
;
Computer Vision, Visualization and Computer Graphics
;
Geometry and Modeling
;
Lighting and Appearance
;
Real-Time Visual Simulation
;
Rendering
;
Texture Models, Analysis, and Synthesis
Abstract:
Achieving a visually appealing experience for the user interaction with photo-realistic digitized micro-fiber
materials is a challenging task. While state-of-the-art high-quality fabric modeling techniques rely on complex
micro-geometry representations that are computationally expensive and not well-suited for interactive
rendering, previous interactive reflectance models reach a speed-up at the cost of discarding many of the effects
of light exchange that significantly contribute to the appearance of fabric materials. In this paper, we
present a novel, example-based technique for the interactive manipulation of micro-fiber materials based on
bidirectional texture functions (BTFs) that allow considering fine details in the surface reflectance behavior.
BTFs of the respective material sample are acquired for varying fiber orientations and combined to a single
texture representation that encodes material appearance depending on the view and light conditions as well
as the orientations
of the fibers. This model can be efficiently evaluated depending on the user input which,
as demonstrated by our results, allows a realistic simulation of the interaction with micro-fiber materials in
real-time.
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