Pixel-matched Light-field Pickup with Amici Roof Prism for Uniform Field-of-view Acquisition

This paper proposes a novel light field pickup system that uses Amici roof prisms and side mirrors in a 4f optical configuration. Conventional pickup systems often suffer from unmatched ray directions and limited field of view (FOV) when attempting to mimic the geometry of three-dimensional (3D) displays. In this study, a pixel-matched pickup method is implemented using Amici roof prisms that retro-reflect incoming rays to ensure direction consistency between object and pickup regions. The integration of side mirrors further expands the FOV by capturing virtual camera positions. The proposed system was experimentally verified using a camera array and custom optical setup and demonstrated the ability to provide perfect elemental images without computational correction for depth conversion. The significance of this method lies in its ability to capture accurate light field data in real time with minimal computational overhead, paving the way for high-quality 3D display applications.