We’ve written about computer vision and facial recognition many times before, and recently one of the issues that has come up has been that all the cameras in the world are generating more visual data than people can watch. I wrote about Kitware’s intention to create “behavior recognition” in camera systems](The Next Steps In Robotics And Computer Vision: Behavior Analysis, Situational Awareness | TechCrunch), and this “Questionable Observer Detector” seems like it would be a nice complement to it. You’ve heard, no doubt, of security cameras that snap pictures of your face as you pass and compare them to a central database of smugglers, terrorists, and other baddies. The trouble is that unless these people are already known, the system can’t really detect them. So a team of computer scientists at Notre Dame decided to put together a way for a database to be built on the fly.