Illumination Estimation using Cast Shadows for Realistic Augmented Reality Applications

Metagrating solutions for full color single-plate waveguide combiner

RESEARCH PAPER / Feb 2022 / Immersive/AR/VR/MR, Image Processing

In this work we propose several full-color metagrating solutions for single waveguide-based Augmented and Virtual Reality near-eye display systems. The presented solutions are based on a combination of reflective and/or transmissive diffraction gratings inside or outside a waveguide. The proposed designs have high intensity across a wide angular range. Applying...

Study on Automatic 3D Facial Caricaturization: from rules to Deep Learning

RESEARCH PAPER / Jan 2022 / Computer Graphics, Immersive/AR/VR/MR

Facial caricature is the art of drawing faces in an exaggerated way to convey emotions such as humor or sarcasm. Automatic caricaturization has been explored both in the 2D and 3D domain. In this paper, we present the first study of facial mesh caricaturization techniques. In addition to a user...

Over-wavelength pitch sized diffraction gratings for augmented reality applications

RESEARCH PAPER / Jan 2022 / Immersive/AR/VR/MR, Optics, Light Field

Waveguide based optical combiners for Augmented Reality (AR) glasses are integrating several Surface Relief Gratings (SRG) whose pitch sizes can be as small as 200 nm for the blue wavelength. All SRG components exploit the first diffraction order to couple in and out or to deviate the light. We present...

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