PERF: Performant, Explicit Radiance Fields

Autor: Sverker Rasmuson, Erik Sintorn, Ulf Assarsson
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Frontiers in Computer Science, Vol 4 (2022)
Druh dokumentu: article
ISSN: 2624-9898
DOI: 10.3389/fcomp.2022.871808
Popis: We present a novel way of approaching image-based 3D reconstruction based on radiance fields. The problem of volumetric reconstruction is formulated as a non-linear least-squares problem and solved explicitly without the use of neural networks. This enables the use of solvers with a higher rate of convergence than what is typically used for neural networks, and fewer iterations are required until convergence. The volume is represented using a grid of voxels, with the scene surrounded by a hierarchy of environment maps. This makes it possible to get clean reconstructions of 360° scenes where the foreground and background is separated. A number of synthetic and real scenes from well-known benchmark-suites are successfully reconstructed with quality on par with state-of-the-art methods, but at significantly reduced reconstruction times.
Databáze: Directory of Open Access Journals