An overview of signal processing for multimedia, from the
past to the future
Multimedia, as an application, has at its very
core the field of signal processing technology. Although, multimedia has
leveraged on numerous disciplines, signal processing is the most relevant.
Some of the basic concepts, such as spectral analyses, sampling theory and
the theory of partial differential equations have become the fundamental
building blocks for numerous applications and subsequently have been
reinvented in such diverse areas as transform coding, display technology
neural networks. The latter, most recently, lead to a fast implementation
vector quantization. It is evident, that the diverse signal processing
algorithms, concepts and applications are interconnected and in numerous
instances appear in various reincarnated forms (Note, in this instance,
reincarnation may not mean immortality, rather ignorance on part of the
reinventor). For example, sub-band coding existed for many years before
wavelets became fashionable. In this paper, an attempt will be made to
provide a historical overview of signal processing through the present,
followed by a highly personal speculation for the future.
Dr. Tescher is affiliated as a Technical Consultant with the Interactive
Technology Center of Lockheed Martin Telecommunications and the Advanced
Technology Center of Lockheed Martin Missile & Space. He has provided
technical leadership in fields involving wide range of signal and image
processing, radar systems, device technologies, communication studies and
related system integration projects. His previous position included
Laboratory Manager as well as several special assignments, such as Chief
Scientist of a LANDSAT Program Office contract for development of
multispectral compression system for space platform implementation.
Currently, he is technology advisor on compression/ multimedia applications
to the Interactive Technology Center of Lockheed Martin Telecommunications.
He is the "principal" Lockheed Martin representative to several
international standards organizations developing advanced multimedia
technologies, including ISO/IEC JTC 1/SC 29/WG 1 (JPEG), ISO/IEC JTC 1/SC
29/WG 11 (MPEG) and ISO/IEC JTC 1/SC 29 (Plenary Committee).
Previously, at the Aerospace Corporation, he was Director of Signal
Processing Department (which he originally organized). He co-founded
high technology commercial companies in the teleconferencing fields. He had
a special consulting assignment with Bosch Research Laboratories (Germany).
His work at Bosch and other organizations has had a significant impact on
low-bandwidth teleconferencing systems. Dr. Tescher is co-inventor of
several teleconferencing systems and co-author of related key patents
patents, in part, define the JPEG and MPEG transmission standards).
Consulted extensively, both in commercial and defense related
Dr. Tescher received several major professional awards including the Edward
Rhein Prize from Germany's Edward Rhein Foundation (an organization
dedicated to the advancement of television research), recipient of the Gold
Medal (as well as the Governors' and President's Award) of SPIE. Both, the
Edward Rhein Prize and the Gold Medal recognized Dr. Tescher's significant
contributions to the image and video compression fields. Fellow and Life
Member of SPIE, Fellow of the Optical Society of America, past director and
past president of SPIE, his publication record includes over 80 papers
covering compression technologies for commercial and space applications as
well as other areas of signal processing. He has chaired numerous programs
at international conferences. Dr. Tescher is currently an associate editor
of Optical Engineering. He was recently appointed to chair the Industrial
Advisory Board of the Integrated Media System Center (IMSC) of the
University of Southern California (USC). IMSC is the National Science
designated Engineering Research Center in Multimedia.
Dr. Tescher received degrees from the City University of New York (BS),
Polytechnic University of New York (MS) and the University of Southern
California (Ph.D. in EE).
Getting There |