CoherentRaster: Efficient 3D Gaussian Splatting for Light Field Displays

TL;DR

CoherentRaster is a novel 3D Gaussian Splatting framework that enables real-time, high-quality light field display rendering by reducing redundant computation and improving memory efficiency.

Contribution

It introduces Cross-view Coherent Attribute Reuse and View-coherent Remapping to optimize 3D Gaussian Splatting for light field displays.

Findings

Achieves real-time rendering on consumer hardware.

Reduces computational overhead compared to prior methods.

Maintains high-quality light field synthesis.

Abstract

Light field displays (LFDs) require rendering an interlaced image that encodes many view-dependent observations. This multi-view requirement introduces substantial computational overhead, making real-time rendering difficult to achieve. While 3D Gaussian Splatting (3DGS) is efficient for single-view rendering on 2D displays, directly extending it to LFDs is computationally expensive. Moreover, prior accelerations either suffer from GPU inefficiency under spatially incoherent subpixel layouts or rely on computationally heavy multi-plane intermediates. In this paper, we propose CoherentRaster, a 3DGS-based light field rendering framework that performs subpixel-level rasterization. Our method employs Cross-view Coherent Attribute Reuse to eliminate redundant computation across neighboring viewpoints and applies View-coherent Remapping to restore warp-level memory efficiency degraded by the interlaced subpixel layout. Together, CoherentRaster provides an efficient pipeline for real-time, high-quality light field synthesis on consumer-grade hardware.