[IPOL discuss] [IPOL announce] new article: Specularity in NeRFs: A Comparative Study of Ref-NeRF and NRFF

[announcements about the IPOL journal]

A new article is available in IPOL: https://www.ipol.im/pub/art/2025/562/

Albert Barreiro, Roger Marí, Rafael Redondo, Gloria Haro, Carles Bosch, 
and David Berga,
Specularity in NeRFs: A Comparative Study of Ref-NeRF and NRFF,
Image Processing On Line, 15 (2025), pp. 32–44.
https://doi.org/10.5201/ipol.2025.562

Abstract
Neural Radiance Fields (NeRF) have emerged as a leading technology for 
3D digitization, especially for their high accuracy and intricate 
detailing. Despite their advancements, early NeRF models struggle to 
handle reflections on specular surfaces effectively. To address this, 
alternative approaches such as Ref-NeRF and NRFF were proposed to 
improve fidelity in representing this physical phenomenon. This study 
compares these two models, providing an analysis of their effectiveness 
and limitations in dealing with complex specularities. We demonstrate 
that both methods struggle with inter-reflections and tend to model 
anisotropic specularities by altering the predicted surface normals.




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