Share Email Print
cover

Proceedings Paper

Gray-scale image fidelity and enhancement in photorefractive volume memory recorded with a pulsed signal beam
Author(s): Guoqiang Li; Feng Qian; Jianlang Li; Liren Liu
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We present, for the first time to our knowledge, a gray-level image recording method in photorefractive volume memory, in which the image to be recorded is illuminated periodically by a pulse while the reference beam interacts the medium continuously until the steady state is reached. By adjusting the duty cycle of the exposure of the image in recording, high fidelity can be maintained in image reconstruction for pixels of different gray-scale intensities. Furthermore, due to multiple beam coupling the weak input image can be greatly enhanced without the loss of fidelity.

Paper Details

Date Published: 20 September 1999
PDF: 8 pages
Proc. SPIE 3801, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V, (20 September 1999); doi: 10.1117/12.363941
Show Author Affiliations
Guoqiang Li, Shanghai Institute of Optics and Fine Mechanics (United States)
Feng Qian, Shanghai Institute of Optics and Fine Mechanics (China)
Jianlang Li, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 3801:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V
Francis T. S. Yu; Shizhuo Yin, Editor(s)

© SPIE. Terms of Use
Back to Top