Lego Camera Rig
As part of the ongoing PhysiCAD project to evaluate tangible interfaces for CAD we built a small proof of concept. The system uses a webcam above a build area to capture the placement of Lego bricks below. The brick positions are then inputted into a virtual build area within Autodesk Inventor. Multiple layers are detected in the system by using different colour bricks, up to a total of six. Models can then be exported for 3D printing to make them permanent.