Event Details

Reversible Integer-to-Integer Wavelet Transforms for Image Coding

Presenter: Mr. Michael Adams - Image Processing Laboratory, Dept. of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC
Supervisor:

Date: Wed, April 10, 2002
Time: 14:00:00 - 15:00:00
Place: EOW 430

ABSTRACT

Abstract

In the last several years, there has been a growing interest in reversible integer-to-integer (ITI) wavelet transforms for image coding applications. Such transforms are invertible in finite-precision arithmetic (i.e., reversible), map integers to integers, and approximate the behavior of linear wavelet transforms. Due largely to these properties, reversible ITI wavelet transforms are extremely useful for image compression systems requiring efficient handling of lossless coding, minimal memory usage, or low computational complexity. Such transforms are one of the key technologies employed in the JPEG-2000 Part-1 standard (i.e., ISO/IEC 15444-1:2000).

In this talk, the speaker will first discuss some of his recent work with reversible ITI wavelet transforms. Considered are matters such as transform frameworks, transform design techniques, the effectiveness of various transforms for image coding applications, and numerous practical issues related to transforms. In addition, the JasPer software, which was developed during the course of the above work, will be very briefly introduced. This software includes a reference implementation of the JPEG-2000 Part-1 codec.

Biography

Michael Adams received the B.A.Sc. degree in computer engineering from the University of Waterloo in 1993, and the M.A.Sc. degree in electrical engineering from the University of Victoria in 1998. He is currently pursuing the Ph.D. degree in electrical engineering at the University of British Columbia. Michael is a voting member of the Canadian delegation to ISO/IEC JTC 1/SC 29 (i.e., Coding of Audio, Picture, Multimedia and Hypermedia Information), and has been an active participant in the JPEG-2000 standardization effort, serving as co-editor of the JPEG-2000 Part-5 standard and principal author of one of the first JPEG-2000 implementations (i.e., JasPer).

For Further Information Contact
Dr. N.J. Dimopoulos (721-8902)