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
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.