{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/61297"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/61297","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"The BoPen : a tangible pointer tracked in six degrees of freedom","abstract":"In this thesis, I designed and implemented an optical system for freehand interactions in six degrees of freedom. A single camera captures a pen's location and orientation, including roll, tilt, x, y, and z by reading information encoded in a pattern at the infinite focal plane. The pattern design, server-side processing, and application demo software is written in Microsoft C#.NET, while the client-side pattern recognition is integrated into a camera with an on-board DSP and programmed in C. 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