Past Events
The particle filtering methodology in signal processing
Dr. Petar M. Djuric, Stony Brook University
When: 9/25/2009 6:30-9:00pm
Location: DeVry University, Room 335, 1870 W. 122nd Ave., Westminster, CO
Note: 6:30 - 7:00 is reserved for appetizers and networking
Cost: Free
Abstract:
Particle filtering is a Monte Carlo – based methodology for sequential signal processing. It is designed for estimation of hidden processes that are dynamic and that can exhibit most severe nonlinearities. Also, it can be applied with equal ease to problems that involve any type of probability distributions. Therefore, it is not surprising that particle filtering has gained immense popularity. In this talk, first, the basics of particle filtering will be provided with description of its essential steps. Then some important topics of the theory will be addressed including Rao-Blackwellization, smoothing, and estimation of constant parameters. Finally, a presentation of most recent advances in the theory will be given. The talk will contain signal processing examples which will aid in gaining valuable insights about the methodology.
Biography:
Petar M. Djuric received his B.S. and M.S. degrees in electrical engineering from the University of Belgrade, in 1981 and 1986, respectively, and his Ph.D. degree in electrical engineering from the University of Rhode Island, in 1990. From 1981 to 1986 he was a Research Associate with the Institute of Nuclear Sciences, Vinca, Belgrade. Since 1990 he has been with Stony Brook University, where he is Professor in the Department of Electrical and Computer Engineering. He works in the area of statistical signal processing, and his primary interests are in the theory of modeling, detection, estimation, and time series analysis and its application to a wide variety of disciplines including wireless communications and biomedicine. Prof. Djuric has served on numerous committees for the IEEE and has been invited to lecture at universities in the United States and overseas. For the years 2008-2009 he has been elected Distinguished Lecturer of the Signal Processing Society. He was the Area Editor for Special Issues of the Signal Processing Magazine and Associate Editor of the IEEE Transactions on Signal Processing. He has also been on the Editorial Boards of several journals including the IEEE Transactions on Signal Processing, the IEEE Journal of Special Topics in Signal Processing, Digital Signal Processing, Journal of Applied Signal Processing, Signal Processing, and Journal on Wireless Communications and Networking. In 2007, he received a paper award for a paper published in the Signal Processing Magazine. Prof. Djuric is a Fellow of IEEE.
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Next Generation Image Compression Standards: JPEG XR and AIC
Dr. Touradj Ebrahimi
When: 8/13/2009 6:30-9:00pm
Location: DeVry University, Room 300, 1870 W. 122nd Ave., Westminster, CO
Note: 6:30 - 7:00 is reserved for appetizers and networking
Cost: Free, Open to All
** Register **
Abstract:
JPEG standard is one of the most successful standards ever and has played a significant role in many consumer applications. JPEG images are used in digital still cameras, in mobile phones, on many Internet applications, and more recently, in social networks such as Facebook, Flickr, Twitter, etc. Following this initial success, the Joint Photographic Experts Group (JPEG committee for short) released another image compression algorithm known as JPEG 2000, which in turn has been successfully used in a number of professional applications such as Digital Cinema, and Medical Imaging. We start with a short introduction analyzing the reasons for the success of these standards in their respective applications areas, as well as the (potential) lack of their penetration is some existing and future applications. 2009 was the year in which the most recent image compression algorithm called JPEG XR was released as an International Standard by ISO/IEC and ITU-T. In a first part of this talk, we will visit the algorithmic details as well as motivations and potential applications in which JPEG XR can be deployed. A second part of the presentation will be dedicated to another emerging standardization effort called Advanced Image Coding (AIC), which is under investigation by the JPEG committee. Doing so, the current status and future plans regarding AIC will be discussed.
Biography:
See the following url for the text: http://personnes.epfl.ch/touradj.ebrahimi
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Building an All-Channel Bluetooth Monitor
Michael Ossmann, Institute for Telecomm Sciences
When: 8/6/2009 6:00-8:00pm
Location: NIST/DOC Building 1, 325 Broadway, Boulder, CO
Note: 6:00 - 6:30 is reserved for appetizers and networking
Cost: Free, Open to All
Abstract:
Monitoring Bluetooth is hard. Security researchers accustomed to 802.11 have been spoiled by ubiquitous, inexpensive hardware capable of monitor mode, but similar tools are not available for Bluetooth. Off-the-shelf Bluetooth adapters are capable of monitoring only by actively joining a network, and they are unable to passively collect the information required in order to join. Efforts to build custom monitoring systems to date have been limited by Bluetooth's frequency hopping through 79 channels, each 1 MHz wide. We will review the options available today for passive Bluetooth monitoring with an emphasis on software radio techniques. Although single channel monitoring with software radio has been demonstrated before, we will show how to extend the technique to all 79 channels and how to predict the target network's pseudo-random hopping sequence using passively collected information
Biography:
Michael Ossmann is a wireless security researcher for the Institute for Telecommunication Sciences at the U.S. Department of Commerce Boulder Laboratories in Colorado. He currently develops software radio tools for security research both as a hobby and for his day job.
Directions:
From Denver take I-25 North to US-36. Go North/West on US-36 to Boulder and exit at Baseline Rd. Turn left (West) on Baseline Rd. Turn left (South) on Broadway and follow it to NIST. At NIST, turn right (West) on Rayleigh Rd. Building 1 is the main complex to your right as you enter.
Synthetic Aperture Radar – Systems and Signal Processing
Evan C. Zaugg
When: 6/23/2009 6:00-8:00pm
Location: CU-Boulder, Discovery Learning Center, 1st Floor
Note: 6:00 - 6:30 is reserved for appetizers and networking
Cost: Free
Abstract:
Synthetic Aperture Radar (SAR) is used for high resolution radar imaging. It can be thought of as a “radar camera” that forms images of the plant's surface by taking a series of radar returns as the spacecraft or aircraft carrying the radar fly overhead. The radar signals are processed together using knowledge of the flight path to form high resolution images similar in appearance to optical photographs. Each advance in technology, throughout the history of SAR, has prompted improvements in performance and capabilities. SAR processing was originally done optically, but the introduction of digital signal processing provided a huge leap forward. This presentation includes a brief history of SAR, SAR systems, and SAR signal processing with a focus on the cutting edge of modern SAR technology. Many recent advances are illustrated by examples of the research conducted at Brigham Young University and ARTEMIS, Inc. including system miniaturization and advances in signal processing.
Biography:
Evan C. Zaugg graduated with his bachelor's degree in Electrical Engineering from Brigham Young University in 2005. He has worked in the Microwave Remote Sensing Laboratory at BYU since 2004. His research includes synthetic aperture radar system design, hardware, and signal processing. In 2008 he begin working for ARTEMIS, Inc. continuing the collaborative projects with BYU. He is currently finishing his Ph.D. in Electrical Engineering at BYU.
Directions:
The Discovery Learning Center is located on the South-West corner of Colorado Ave and Regent Dr in Boulder.
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Signal Processing in Hearing Aids
Dr. James Kates, GN ReSound
When: 4/16/2009 6:30-9:00PM
Location: College Hill Library, Room L-107, 3705 W 112th Ave, Westminster
Note: 6:30 - 7:00 is reserved for appetizers and networking
Cost: Free
Abstract:
Hearing-impaired listeners have difficulty hearing low-intensity sounds, and also perform poorly in background noise, multi-talker interference, and reverberation. The goal of a hearing aid is to restore, as effectively as possible, the hearing in the impaired ear to match that of the normal ear. A modern hearing aid includes many types of signal processing to amplify the signal and reduce the effects of background noise. The signal-processing algorithms implemented in hearing aids will be described, along with the processing limitations imposed by the small size and low power consumption of these devices and the complexities of dealing with the acoustic environment of the head and ear.
Biography:
James M. Kates was born in Brookline, Mass, in 1948. He received the degrees of B.S.E.E. and M.S.E.E. from the Massachusetts Institute of Technology (MIT) in 1971, and the professional degree of Electrical Engineer from MIT in 1972. He currently is a Senior Research Engineer in the Algorithm Development Group of GN ReSound. . He is also an Adjunct Professor in the Department of Speech, Language & Hearing Sciences at the University of Colorado at Boulder, where he conducts research in auditory perception, hearing loss, and signal processing for hearing aids.
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Calculus Bowl 2009
Dr. James Kates, GN ReSound
When: 4/9/2009 6:00-9:00PM
Location: Gateway HS Auditorium, 1300 S. Sable Blvd, Aurora
Cost: Free
Abstract:
For more info please see the official website: http://coyec.org/Zcalcbowl2009
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Digital Radio: FM modulation and demodulation in an FPGA
David Farrell, Dane Sprister and Matthew Taylor of CEPD, Inc.
When: 2/19/2009 6:30-9:00PM
Location: CU-Boulder, Discovery Learning Center, 1st Floor
Note: 6:30 - 7:00 is reserved for appetizers and networking
Cost: Free
** Register **
Abstract:
This presentation by Colorado Electronic Product Design explores an FPGA based configurable digital radio, and demonstrates an FM transceiver design. The trend in software radios is moving toward an all-digital design within a single chip. Most elements of a digital radio can now be implemented within an FPGA. A high-speed analog to digital converter board and an FPGA board are used to implement a working radio using VHDL.
Biography:
For more information see www.cepd.com.
Directions:
The Discovery Learning Center is located on the South-West corner of Colorado Ave and Regent Dr in Boulder.
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Recent Advances in Image Processing
Dr. Arianne T. Hinds
When: 11/13/2008 6:30-9:00PM
Location: College Hill Library Room L107, Westminster, CO
Note: 6:30 - 7:00 is reserved for appetizers and networking
Cost: Free
Abstract:
Media technologies such as data compression and coding are used in many audiovisual applications for which interoperability is a major requirement. The goal of open standards organizations, such as the Moving Picture Experts Group (MPEG), is to develop standards to meet this requirement. This talk will review major video trends and their corresponding MPEG standards, thus illustrating the evolution of digital video technology from “the big picture” such as MPEG-1 to MVC, down to the “small picture” such as the IDCT. The goals of these standards, their major features, and capabilities will be discussed. This talk will show that standards are repositories of the some of the best technology and an excellent place to watch that technology evolve.
Biography:
Arianne Therese Hinds is a Senior Software Engineer at the Ricoh | IBM InfoPrint Solutions company where she specializes in the research and development of image processing algorithms for high speed color printer control units. Previously she worked for IBM for 20 years also in the areas of image processing and control unit development. Her research interests include numerical optimization and algorithms for high-performance image and signal processing. She received the M.Sc. and Ph.D. degrees in Computer Science from the University of Colorado in Boulder, in 2000 and 2007 respectively. She has participated in the development of JPEG and MPEG standards since 2005, and currently serves as the Chair for the INCITS L3 Technical Committee for the Coding of Audio, Picture, Multimedia, and Hypermedia Information (the U.S. Technical Advisory Group to ISO/IEC JTC1/SC29). In 2007 she was awarded a Certificate of Appreciation by the ISO for her contributions toward the development of ISO/IEC 23002 Part 2 to standardize an implementation of the Inverse Discrete Cosine Transform for MPEG video technologies.
Directions:
3705 W 112th Avenue next to the Front Range Community College between Sheridan and Federal Blvds.