关键词：嵌入式摄像机；传感；3D打印机
摘 要：3D printers enable designers to rapidly produce working models of future products. Today these physical prototypes are mostly passive. Our research goal is to enable designers to turn models produced on commodity 3D printers into interactive objects with a minimum of required assembly or instrumentation. We present Sauron, an embedded machine visionbased system for sensing human input on physical controls like buttons, sliders, and joysticks. With Sauron, designers attach a single camera with integrated ring light to a printed prototype. This camera observes the interior portions of input components to determine their actuation and position. In many prototypes, input components may be occluded or outside the viewing frustum of a single camera. We introduce algorithms that generate internal geometry and calculate mirror placements to redirect input motion into the visible camera area.