Spectral analysis of re-parameterized light fields

TL;DR

This paper analyzes the spectral properties of re-parameterized light fields with a flexible, tilted image plane, providing theoretical insights and simulations that suggest improved sampling strategies for applications like view synthesis.

Contribution

It introduces a theoretical framework for light field sampling with a tilted image plane, expanding previous guidelines and enabling more flexible scene representations.

Findings

Flexible sampling guidelines allow wider camera baselines.

Tilted image plane improves light field sampling efficiency.

Theoretical analysis supported by simulations.

Abstract

In this paper, we study the spectral properties of re-parameterized light field. Following previous studies of the light field spectrum, which notably provided sampling guidelines, we focus on the two plane parameterization of the light field. However, we introduce additional flexibility by allowing the image plane to be tilted and not only parallel. A formal theoretical analysis is first presented, which shows that more flexible sampling guidelines (i.e. wider camera baselines) can be used to sample the light field when adapting the image plane orientation to the scene geometry. We then present our simulations and results to support these theoretical findings. While the work introduced in this paper is mostly theoretical, we believe these new findings open exciting avenues for more practical application of light fields, such as view synthesis or compact representation.