System and method for synchronizing fiducial markers
First Claim
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1. A method of active fiducial marker synchronization comprising(a) providing a plurality of light emitting fiducial markers having means to modulate emitted light, or radio frequency, patterns and to receive and demodulate information encoded as light, or radio frequency, patterns;
- (b) encoding synchronization time stamps as modulated light patterns at a first marker and transmitting said patterns from said first marker to secondary markers;
(c) receiving and demodulating said time stamps at one or more said secondary fiducial markers; and
(d) using said received time stamps to set schedules for emission of patterns of light from said fiducial markers.
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Abstract
A system of active fiducial markers for pose calculation of head mounted displays is described in which information is exchanged among said markers for the purpose of synchronization. Fiducial patterns are made more easily identifiable by selective duty cycles of sub groups of synchronized emitters and means is described to propagate pose information among markers.
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6 Claims
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1. A method of active fiducial marker synchronization comprising
(a) providing a plurality of light emitting fiducial markers having means to modulate emitted light, or radio frequency, patterns and to receive and demodulate information encoded as light, or radio frequency, patterns; -
(b) encoding synchronization time stamps as modulated light patterns at a first marker and transmitting said patterns from said first marker to secondary markers; (c) receiving and demodulating said time stamps at one or more said secondary fiducial markers; and (d) using said received time stamps to set schedules for emission of patterns of light from said fiducial markers. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification