Attenuation-Based 3D Display Using Stacked LCDs

Introduction

Unlike traditional 2D displays, attenuation-based 3D displays enable the accurate, high-resolution depiction of motion parallax, occlusion, translucency, and specularity. We have implemented iterative tomographic reconstruction for image synthesis on a stack of spatial light modulators (multiple low-cost iPad LCDs). We illuminate these volumetric attenuators with a backlight to recreate a 4D target light field. Although five-layer decomposition generates the optimal tomographic reconstruction, our two-layer display costs less than $100 and requires less computation

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