Fast Dynamic Facial Wrinkles

How to read this

Category

Method: real-time facial wrinkle synthesis

Contributions

• A method that animates dynamic skin wrinkles under expression by modifying displacement-map wrinkles based on local stretch and compression (wider when stretched, deeper when compressed).
• A fast approximation that bins wrinkles by orientation with pre-computed displacement maps blended in a shader.
• A reported ~50x speedup compared to the per-frame approach while keeping temporally consistent dynamic wrinkles.

Context

Extends deformation-driven displacement-map facial detailing (Ma et al., 'Facial Performance Synthesis using Deformation-Driven Polynomial Displacement Maps') toward a real-time, stretch/compression-aware wrinkle formulation.Builds on: Facial Performance Synthesis using Deformation-Driven Polynomial Displacement Maps

Correctness

Rests on the assumption that wrinkles behave perpendicular to the local stress axis and can be approximated by orientation bins blended in a shader; the speedup is an approximation of a per-frame method, so a reader should weigh fidelity against the binning/blending shortcut.

Clarity

Quite accessible; a single first pass conveys the core stretch/compression rule and the binning trick, with a second pass only for the shader blending details.

How to read it

First pass for the stretch-compression wrinkle rule and the orientation-bin approximation; a brief second pass on the shader blending is enough if you plan to integrate it into a real-time face pipeline.