The European Physical Journal Applied Physics

Photonics

Real-time optical 2D wavelet transform based on the JPEG2000 standards

A. Alkholidia1, A. Cottoura1, A. Alfaloua1, H. Hamama2 and G. Keryera1

Laboratoire Brest-ISEN (L@BISEN), Institut Supérieur d'Électronique et du Numérique de Brest, France

Faculté d'Ingénierie, Université de Moncton, Canada

Abstract

In image processing, the Wavelet Transform (WT) is largely used. However, time requirements for large two-dimensional image transforms are hard to meet with sequential implementations. Parallel implementation decreases the processing time and allows to reach a real-time operation in image coding. Unfortunately, this parallel coding increases the hardware complexity. We propose an optical implementation of the JPEG2000 compression using a special implementation of the WT. Special attention is paid to propose a simple all optical setup carrying out the optical implementation of JPEG2000 compression for gray-level images. Finally, an adaptation of our technique to colored images is proposed. Wb

(Received August 22 2007)

(Revised May 5 2008)

(Accepted August 28 2008)

(Online publication October 24 2008)

PACS:

  • 42.30.Kq – Fourier optics;
  • 42.30.Va – Image forming and processing;
  • 42.30.Tz – Computer vision; robotic vision
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