THREE-DIMENSIONAL POINTING USING ONE CAMERA AND THREE ALIGNED LIGHTS

摘要

Methods and systems for surface-free pointing and/or command input include a computing device operably linked to an imaging device. The imaging device can be any suitable video recording device including a conventional webcam. At least one pointing/input device is provided including first and second sets of visible point light sources, wherein the first and second sets emit differently colored light. The imaging device captures one or more sequential image frames each including a view of a scene including the first and second sets of visible point light sources. One or more software programs calculate a position and/or a motion and/or an orientation of the pointing/input device in the captured image frames by identifying colored areas corresponding to the first set of aligned visible point light sources. Certain activation patterns of individual point light sources are mapped to particular pointing and/or input commands.

主权项

1. A computing system for tracking a motion and/or an orientation of a pointing/input device, comprising:
a computing device having at least one processor, at least one memory, and at least one graphical user interface; at least one pointing/input device including a first set of aligned visible point light sources emitting light of a wavelength defining a first predetermined color and a second set of visible point light sources emitting light of a wavelength that defines a second predetermined color that is different from the first predetermined color; an imaging device operably linked to the computing device and configured for capturing a plurality of sequential image frames; and at least one computer program product operable on the computing device processor, the at least one computer program product including executable instructions for determining at least a position and/or a motion and/or an orientation of the at least one pointing/input device from digital data of the plurality of sequential image frames providing views of the first and second sets of visible point light sources held and/or moved in a three-dimensional space within a field of view of the imaging device, and for rendering on the graphical user interface a visual marker corresponding to the determined position and/or the motion and/or the orientation of the at least one pointing/input device.