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December 2014

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ECE Colloquium - Prof. Bahram Jalali, UCLA

Speaker Prof. Bahram Jalali, UCLA
Title ECE Colloquium (ECE 500): "Anamorphic Stretch Transform: Digital and Analog Compression for Big Data"
Date: 5/1/2014
Time: 4:00 pm
Location: 151 Everitt Lab
ECE Faculty Host: Prof. Gabriel Popescu
Event Type: Seminars


Telecommunication systems routinely generate, capture and analyze data at rates exceeding billions of bits per second. Interestingly, the scale of the problem is similar to that of blood analysis. With approximately 1 billion cells per milliliter of blood, detection of a few abnormal cells in a blood sample translates into a “cell error rate” of 10-12, a value that is curiously similar to the bit error rate in telecommunication systems.

Motivated by WDM and the time-stretch technique, a new type of bright-field camera known as STEAM has demonstrated imaging of cells with record shutter speed and throughput leading to detection of rare breast cancer cells in blood with one-in-a-million sensitivity. A second technique called FIRE is a new approach to fluorescent imaging that is based on wireless communication techniques. FIRE has achieved real-time pixel readout rates one order of magnitude faster than the current gold standard in high-speed fluorescence imaging.

Producing data rates as high as one Tera bit per second, these real-time instruments pose a big data challenge that overwhelms even the most advanced computers. Driven by the necessity of solving this problem, we have recently introduced and demonstrated a categorically new data compression technology. The so called Anamorphic Stretch Transform is a physics based compression technique that not only performs real-time data compression in the analog domain, but can also function as a digital algorithm for compression of images with superior performance to JPEG and other compression technologies. It alleviates the big data problem in real-time instruments, in digital imaging and beyond.


Prof. Jalali is the Northrop-Grumman Endowed Chair in Optoelectronics and Professor of Electrical Engineering at UCLA, the Director of Department’s Physical and Wave Electronics, with joint appointments in Biomedical Engineering, California NanoSystems Institute (CNSI) and Department of Surgery at the UCLA School of Medicine. He received his Ph.D. in Applied Physics from Columbia University in 1989 and was with Bell Laboratories in Murray Hill, New Jersey until 2002 before joining UCLA. He is a Fellow of IEEE, the Optical Society of America (OSA), the American Physical Society (APS) and SPIE. He is the recipient of the R.W. Wood Prize from Optical Society of America for the invention and demonstration of the first Silicon Laser, and the Aron Kressel Award of the IEEE Photonics Society, and the Distinguished Engineering Achievement Award from the Engineers Council. In 2005 he was elected into the Scientific American Top 50, and received the BrideGate 20 Award in 2001 for his entrepreneurial accomplishments. He has published over 300 journal and conference papers, and holds 13 patents. During 2001-2004, he was with Intel Corporation’s optical and wireless communication divisions.