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ECE seminar: Light Field Display without Eyewear: A Perspective from High Performance Computing

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Wednesday, January 23, 2019
12:00 pm - 1:00 pm
Dr. Bo Zhou, System Architect, Apple Inc.
ECE Seminar

We live in a three-dimensional space where every element affects the light coming into our retina. For example, observers stranding around the same object would perceive differently due to their points of views.
Light filed display is an emerging technology which aims to create the virtual imagery by reproducing the lights reflected from the real objects in all directions. Fundamentally, the design of such display requires super-fast space light modulator (SLM) which is able to deliver multi-magnitude more lights than the traditional 2D display in the same amount of time. This presents a daunting challenge to the current technology from both the computing and optical perspectives.
In this presentation, we cover a variety of depth cues which can be leveraged to create a 3D display. We then introduce the basics of light field display (without eyewear) and its inherent difficulties to create high-frame-rate (HFR) directional light sources. Especially, we will focus on the approach to overcome the computation and bandwidth burden with the Field Programmable Gate Array (FPGA). Compared with a current state-of-the-art implementation, the proposed Light Emitting Memory (LEM) approach achieves 10x performance improvement with 200x cost deduction. The combination of HFR and low cost enables the optical engineer's ability to provide better image fidelity and eventually open up enormous possibilities for the glass-free 3D display development