Bi-Layer textures: a Model for Synthesis and Deformation of Composite Textures

Geoffrey Guingo (1) , Basile Sauvage (2) , Jean-Michel Dischler (2) , Marie-Paule Cani (1)

1 IMAGINE - Intuitive Modeling and Animation for Interactive Graphics & Narrative Environments
2 ICube - Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie

We propose a bi-layer representation for textures which is suitable for on-the-fly synthesis of unbounded textures from an input exemplar. The goal is to improve the variety of outputs while preserving plausible small-scale details. The insight is that many natural textures can be decomposed into a series of fine scale Gaussian patterns which have to be faithfully reproduced, and some non-homogeneous, larger scale structure which can be deformed to add variety. Our key contribution is a novel, bi-layer representation for such textures. It includes a model for spatially-varying Gaussian noise, together with a mechanism enabling synchronization with a structure layer. We propose an automatic method to instantiate our bi-layer model from an input exemplar. At the synthesis stage, the two layers are generated independently, synchronized and added, preserving the consistency of details even when the structure layer has been deformed to increase variety. We show on a variety of complex, real textures, that our method reduces repetition artifacts while preserving a coherent appearance.

Domaines: Traitement des images [eess.IV]; Synthèse d'image et réalité virtuelle [cs.GR]

Geoffrey Guingo, Basile Sauvage, Jean-Michel Dischler, Marie-Paule Cani. Bi-Layer textures: a Model for Synthesis and Deformation of Composite Textures. Computer Graphics Forum, 2017, Proceedings of EGSR, 36 (4), pp.111-122. ⟨10.1111/cgf.13229⟩. ⟨hal-01528537⟩