Real-time numerical reconstruction of digitally recorded holograms

Carlos Trujillo; John F. Restrepo; J. Garcia-Sucerquia

doi:10.1117/12.901719

2 November 2011 Real-time numerical reconstruction of digitally recorded holograms

Carlos Trujillo, John F. Restrepo, J. Garcia-Sucerquia

Proceedings Volume 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World; 80116T (2011) https://doi.org/10.1117/12.901719
Event: International Commission for Optics (ICO 22), 2011, Puebla, Mexico

Abstract

The numerical reconstruction of digitally recorded holograms has constituted the bottle neck for real-time digital holography. The reconstruction process can be understood as the diffraction that undergoes a wavefront as it illuminates the digitally recorded hologram. As this process is done numerically, the reconstruction of a M × N pixels hologram into an image of similar dimensions is an operation with a Ο (M × N)² complexity. The diffraction process can be represented by a Fresnel transform or a scalable convolution of the recorded hologram. In these representations the numerical reconstruction has a complexity of Ο (M × log N)², still quite demanding computationally if the holograms are of 2048 × 2048 pixels. In this work, the power provided by a Graphics Processing Unit (GPU) is used to accelerate the numerical reconstruction of digitally recorded holograms. The methodology is supported on the parallelization of typical Fresnel transform and scalable reconstruction algorithms. On reconstructing holograms of 2048 × 2048 pixels, the reconstruction is speeded up 20 times for the former method and 11 times for the scalable convolution. For holograms of 1024 × 1024, the accelerated reconstruction methods allow for real-time digital holography.

Citation Download Citation

Carlos Trujillo, John F. Restrepo, and J. Garcia-Sucerquia "Real-time numerical reconstruction of digitally recorded holograms", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80116T (2 November 2011); https://doi.org/10.1117/12.901719

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available