Procedural Phasor Noise

Thibault Tricard 1 Semyon Efremov 1 Cédric Zanni 1 Fabrice Neyret 2 Jonàs Martínez 1 Sylvain Lefebvre 1
1 MFX - Matter from Graphics
Inria Nancy - Grand Est, LORIA - ALGO - Department of Algorithms, Computation, Image and Geometry
2 MAVERICK - Models and Algorithms for Visualization and Rendering
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : Procedural pattern synthesis is a fundamental tool of Computer Graphics,ubiquitous in games and special effects. By calling a single procedure inevery pixel – or voxel – large quantities of details are generated at low cost,enhancing textures, producing complex structures within and along surfaces.Such procedures are typically implemented as pixel shaders.We propose a novel procedural pattern synthesis technique that exhibitsdesirable properties for modeling highly contrasted patterns, that are especiallywell suited to produce surface and microstructure details. In particular,our synthesizer affords for a precise control over the profile, orientation anddistribution of the produced stochastic patterns, while allowing to grade allthese parameters spatially. Our technique defines a stochastic smooth phase field – a phasor noise –that is then fed into a periodic function (e.g. a sine wave), producing an oscillating field with prescribed main frequencies and preserved contrastoscillations. In addition, the profile of each oscillation is directly controllable(e.g. sine wave, sawtooth, rectangular or any 1D profile). Our techniquebuilds upon a reformulation of Gabor noise in terms of a phasor field thataffords for a clear separation between local intensity and phase.Applications range from texturing to modeling surface displacements, as wellas multi-material microstructures in the context of additive manufacturing.
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Thibault Tricard, Semyon Efremov, Cédric Zanni, Fabrice Neyret, Jonàs Martínez, et al.. Procedural Phasor Noise. ACM Transactions on Graphics, Association for Computing Machinery, In press, pp.1-13. ⟨10.1145/3306346.3322990⟩. ⟨hal-02118508⟩



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