Publication:
Fast computer-generated hologram computation using rendered depth map image

Thumbnail Image

School / College / Institute

Program

KU Authors

Co-Authors

Bjelkhagen, Hans I.
Bove, V. Michael

Publication Date

Language

Embargo Status

NO

Journal Title

Journal ISSN

Volume Title

Alternative Title

Abstract

We propose a method for computing realistic computer-generated holograms (CGHs) of three-dimensional (3D) objects, where we benefit from well-established graphical processing units (GPUs) and computer graphics techniques to handle occlusion, shading and parallax effects. The graphics render provides a 2D perspective image including occlusion and shading effects. We also extract the depth map data of the scene. The intensity values and 3D positions of object points are extracted by combining the rendered intensity image and the depth map (Z-buffer) image. We divide the depth range into several planes and quantize the depth value of 3D image points to the nearest plane. In the CGH computation part, we perform proper Fresnel transformations of these planar objects and sum them up to create the hologram corresponding to the particular viewpoint. We then repeat the entire procedure for all possible viewpoints and cover the hologram area. The experimental results show that the technique is capable of performing high quality reconstructions in a fast manner.

Source

Publisher

Society of Photo-optical Instrumentation Engineers (SPIE)

Subject

Optics, Imaging science and photographic technology

Citation

Has Part

Source

Book Series Title

Edition

DOI

10.1117/12.2252374

item.page.datauri

Link

Rights

Copyrights Note

Endorsement

Review

Supplemented By

Referenced By

0

Views

7

Downloads

View PlumX Details