Optical digitizer with improved distance measurement capability
First Claim
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1. A method of determining spatial coordinates in three dimensional space, comprising:
- obtaining initial spatial coordinate values for an object in three dimensions using a signal received from one or more markers associated with the object by an optical sensor system;
separately measuring a distance to the object using a separate non-contact distance measurement device, wherein the separately measuring a distance to the object is performed separately from the obtaining initial spatial coordinate value for the object in the three dimensions; and
combining the initial spatial coordinate values for the object in the three dimensions with the separately measured distance to obtain spatial coordinate values for the three dimensions.
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Abstract
Systems and methods improve the accuracy of spatial coordinate measurements by optical digitizers by obtaining a separate distance measurement, which may be via direct ranging rather than triangulation, and combining the distance measurement with the spatial coordinate measurements to improve the accuracy of the three-dimensional spatial coordinate measurement.
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Citations
38 Claims
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1. A method of determining spatial coordinates in three dimensional space, comprising:
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obtaining initial spatial coordinate values for an object in three dimensions using a signal received from one or more markers associated with the object by an optical sensor system; separately measuring a distance to the object using a separate non-contact distance measurement device, wherein the separately measuring a distance to the object is performed separately from the obtaining initial spatial coordinate value for the object in the three dimensions; and combining the initial spatial coordinate values for the object in the three dimensions with the separately measured distance to obtain spatial coordinate values for the three dimensions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A system for determining, spatial coordinates in a three-dimensional space, comprising:
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an optical sensor system configured to obtain initial spatial coordinate values for an object in three dimensions using signals received from one or more markers associated with the object; a separate non-contact distance measuring device configured to separately measure a distance to an object located in the three-dimensional space, the separate non-contact distance measuring device configured to separately measure the distance to an object separately from obtaining the initial spatial coordinates; and a processing device configured to combine the initial spatial coordinate values for the object in the three dimensions with the separately measured distance to obtain spatial coordinate values for the three dimensions. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification