ECE Graduate Seminar Lecture by Dr. Christopher David, Copious Imaging, LLC

Thursday, September 20, 2018
4:00 pm
Floor/Room #: 
AK 219


Computational Pixel Imager for Wide Area Motion Imagery



The computational pixel imager (CPI) is an infrared camera chip that uses a technology known as the digital-pixel focal plane array (DFPA). The CPI consists of an advanced readout integrated circuit (ROIC) that is mated to an infrared detector array. This ROIC is fabricated in a silicon 65nm process with an analog-to-digital converter (ADC) inside every pixel and an all-digital readout architecture. The ADC and digital backend enable the device to perform on-chip image processing and high-speed data transfers. This functionality provides the means to generate gigapixel-class, wide-area motion imagery (WAMI) with a single, small image sensor. The Wide-area Infrared System for Persistent Surveillance (WISP) is system built around a CPI camera operating in a form of continuous scanning called time delay and integrate (TDI). The large dynamic range and high-speed data transfer makes the CPI well-tailored for TDI scanning systems. WISP provides day/night, long-wave infrared (LWIR) surveillance imagery with more than a hemisphere of coverage (360 deg, -30/+90 deg). The software backend processes the 0.5 Hz, 800 megapixel frames to provide image stabilization, geo-referencing, as well as tracking and identifying objects of interest.


Copious Imaging ("Copious") was formed in December of 2017 as a spinoff of the Massachusetts Institute of Technology Lincoln Laboratory ("MIT-LL"). The company was initiated to rapidly commercialize disruptive new infrared imaging technology that was developed over the last 10 years at MIT-LL, to meet urgent needs of the United States Department of Defense. The inventors and chief engineering team responsible for the development of DFPA and WAMI technology at MIT-LL form the core team at Copious Imaging. The team has worked together for over seven years to develop and deploy the WISP sensor.



Dr. Christopher David

Lead Electrical Engineer, Co-Founder
Copious Imaging, LLC



Dr. David is the lead electrical engineer and a co-founder at Copious Imaging, LLC. Over the 7 years at MIT Lincoln Laboratory, Chris worked on the DFPA ROIC technology as one of the lead IC designers. His doctoral research in analog and mixed-signal IC design, analog-to-digital converters and digital correction for analog circuits helped spur the development of the DFPA. Chris helped bring the DFPA ROIC from laboratory prototype to a key enabler for IR sensor technology in systems such as WISP (Wide-Area Infrared System for Persistent surveillance) and IRST (Infrared Search and Track). Chris and his team have earned several awards for their work in digital-pixel technology, including the R&D 100 award, Lincoln Laboratory’s Best Invention award and the Military Sensing Symposium’s Herschel award. He holds a BS in ECE from Lafayette College and a PhD in EE from Worcester Polytechnic Institute.