JPEG 2000: Images as you'd like
Dr. Michael Gormish
Senior Research Engineer
Ricoh Innovations, Inc.
2882 Sand Hill Road, Suite 115
Menlo Park, CA 94025-7022
Friday, May 4th, 3:00 PM, ENS 302
gormish@rii.ricoh.com
Abstract
JPEG 2000 is a new international standard for the compression of still
images. Although the new standard provides better compression at any
given quality level, the real advantange over the DCT based "original"
JPEG is the feature set. JPEG 2000 can compress data from black and
white graphics to multi-spectral high bit depth imagery at extremely
low bit rates or extremely high quality (including lossless). Perhaps
more importantly, decisions about compression ratio or quality or
region of interest can be made after the image is compressed. This
wide range of capabilities make the standard useful in a diverse set
of applications including: internet imaging, printing, scanning,
digital photography, remote sensing, mobile, color facsimile, medical
imagery, and digital libraries.
This talk provides details on the technologies used in Part I of the
standard (color and wavelet transforms, context models, entropy coder,
quantization techniques, region of interest, and error resilience),
how these technologies provide features desired in a modern
compression system, and how the features can be used in imaging
applications. History and status of the 7(!) parts of JPEG 2000 will be
provide as audience interest and time allows.
Biography
Michael Gormish earned bachelor's degrees in mathematics and
electrical engineering from the University of Kansas in 1989, and a
masters and PhD in electrical engineering from Stanford University
finishing in 1994. He currently works on image compression image
enhancement, and image quality at Ricoh Innovations, Inc. He worked
on feature rich image compression starting with the CREW system. (The
presentation of CREW to the ISO JPEG committee ultimately led to the
call for proproposals for JPEG 2000). Michael has contributed to JPEG
2000 by inventing and proposing technology, editing documents,
chairing the color core experiment group, and even acting as the head
of the United States delegation (USNB HOD) to the JPEG meetings when
necessary. He has increased public knowledge of the standard through
his web page, authoring papers, and chairing a special session on JPEG
2000, and giving talks at several conferences and universities.
A list of Telecommunications and Signal Processing Seminars is available at
from the ECE department Web pages under "Seminars".
The Web address for the Telecommunications and Signal Processing Seminars is
http://anchovy.ece.utexas.edu/seminars