Terrapattern provides an open-ended interface for visual query-by-example. Simply click an interesting spot on Terrapattern’s map, and it will find other locations that look similar. Our tool is ideal for locating specialized ‘nonbuilding structures’ and other forms of soft infrastructure that aren’t usually indicated on maps. It’s an open-source tool for discovering “patterns of interest” in unlabeled satellite imagery—a prototype for exploring the unmapped, and the unmappable.
Gasping for oxygen in the noxious air that so often enshrouds northern China is never pleasant. What really twists the knife is that the state media often refer to it simply as “fog,” not pollution, as though it came wafting in on a zephyr, and wasn’t belched by a smokestack in Hebei. Well here’s some vindication for anyone who ever found this annoying. The Chinese government has realized that whatever it is clogging the atmosphere, it’s rendering government surveillance cameras ineffective (paywall), reports the South China Morning Post. Since that compromises national security, the government has hired two teams of scientists to come up with a fix, says the newspaper. But one reason they’re flummoxed by their assignment is that the haze is not simply “fog,” says Yang Aiping, a digital imaging expert and leader of one of the teams.
http://qz.com/143660/china-discovers-that-pollution-makes-it-really-hard-to-spy-on-people/
Although I am truly fascinated by what sorts of optical landmarks might yet be developed for field-testing the optical capabilities of drones, as if the world might soon be peppered with opthalmic infrastructure for self-training autonomous machines, it is also quite intriguing to realize that these calibration targets are, in effect, ruins, obsolete sensory hold-overs from an earlier age of film-based cameras and less-powerful lenses. Calibrating nothing, they are now just curious emblems of a previous generation of surveillance technology, robot-readable hieroglyphs whose machines have all moved on.
http://bldgblog.blogspot.com.au/2013/02/optical-calibration-targets.html