It came to my attention that DARPA Autonomous Real-time Ground Ubiquitous Surveillance - Imaging System (ARGUS-IS) program plans to develop and use 1.8 Gigapixel video sensor. The Gigapixel sensor will be integrated into the A-160 Hummingbird, an unmanned air vehicle for flight testing and demonstrations. The sensor produces more than 27 Gigapixels per second running at a frame rate of 15 Hz. The airborne processing subsystem is modular and scalable providing more than 10 TeraOPS of processing.
Update: 1.8GP pixel count translates into 42.5K x 42.5K pixel square sensor. Assuming a medium format 6cm x 6cm sensor, the pixel size is about 1.4um. I wonder who can provide to DARPA this kind of technology?