Light Field Neural Rendering

• URL: http://arxiv.org/abs/2112.09687v1
• Date: Fri, 17 Dec 2021 18:58:05 GMT
• Title: Light Field Neural Rendering
• Authors: Mohammed Suhail, Carlos Esteves, Leonid Sigal, Ameesh Makadia
• Abstract summary: Methods based on geometric reconstruction need only sparse views, but cannot accurately model non-Lambertian effects. We introduce a model that combines the strengths and mitigates the limitations of these two directions. Our model outperforms the state-of-the-art on multiple forward-facing and 360deg datasets.
• Score: 47.7586443731997
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Classical light field rendering for novel view synthesis can accurately reproduce view-dependent effects such as reflection, refraction, and translucency, but requires a dense view sampling of the scene. Methods based on geometric reconstruction need only sparse views, but cannot accurately model non-Lambertian effects. We introduce a model that combines the strengths and mitigates the limitations of these two directions. By operating on a four-dimensional representation of the light field, our model learns to represent view-dependent effects accurately. By enforcing geometric constraints during training and inference, the scene geometry is implicitly learned from a sparse set of views. Concretely, we introduce a two-stage transformer-based model that first aggregates features along epipolar lines, then aggregates features along reference views to produce the color of a target ray. Our model outperforms the state-of-the-art on multiple forward-facing and 360{\deg} datasets, with larger margins on scenes with severe view-dependent variations.

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