Documentdetail
ID kaart

oai:arXiv.org:2408.13117

Onderwerp
Computer Science - Graphics Computer Science - Computer Vision...
Auteur
Sun, Yuou Deng, Bailin Zhang, Juyong
Categorie

Computer Science

Jaar

2024

vermelding datum

28-08-2024

Trefwoorden
light computer distribution surface
Metriek

Beschrijving

Designing a freeform surface to reflect or refract light to achieve a target distribution is a challenging inverse problem.

In this paper, we propose an end-to-end optimization strategy for an optical surface mesh.

Our formulation leverages a novel differentiable rendering model, and is directly driven by the difference between the resulting light distribution and the target distribution.

We also enforce geometric constraints related to fabrication requirements, to facilitate CNC milling and polishing of the designed surface.

To address the issue of local minima, we formulate a face-based optimal transport problem between the current mesh and the target distribution, which makes effective large changes to the surface shape.

The combination of our optimal transport update and rendering-guided optimization produces an optical surface design with a resulting image closely resembling the target, while the fabrication constraints in our optimization help to ensure consistency between the rendering model and the final physical results.

The effectiveness of our algorithm is demonstrated on a variety of target images using both simulated rendering and physical prototypes.

Sun, Yuou,Deng, Bailin,Zhang, Juyong, 2024, End-to-end Surface Optimization for Light Control

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