ACCURATE POSITIONING OF AUGMENTED REALITY CONTENT
First Claim
1. A computer-implemented method for accurately locating augmented reality (AR) content, the method comprising:
- measuring, using one or more sensors of a computing device, a first six-degree-of-freedom (DOF) vector between a first vantage point of the computing device and a first trackable feature in a first sensor range of the computing device;
measuring, using the one or more sensors of the computing device, a second six-DOF vector between a second vantage point of the computing device and a second trackable feature in a second sensor range of the computing device;
measuring, using the one or more sensors of the computing device, a third six-DOF vector between the first vantage point and the second vantage point;
estimating, based on the first vector, the second vector, and the third vector, using a processor of the computing device, a fourth six-DOF vector between the first trackable feature and the second trackable feature;
storing the estimated fourth vector in a data store in association with the first trackable feature and the second trackable feature, such that the estimated fourth vector represents a spatial relationship between the first trackable feature and the second trackable feature;
determining, within a common spatial coordinate system, a first set of spatial coordinates for the first trackable feature and a second set of spatial coordinates for the second trackable feature; and
storing, in the data store, the first set of spatial coordinates associated with the first trackable feature and the second set of spatial coordinates associated with the second trackable feature, such that the first and second sets of spatial coordinates represent respective locations of the first and second trackable features within the common coordinate system;
wherein the data store includes a fifth six-DOF vector representing a spatial relationship and an orientation of an AR content item relative to the first trackable feature.
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Accused Products
Abstract
A system for accurately positioning augmented reality (AR) content within a coordinate system such as the World Geodetic System (WGS) may include AR content tethered to trackable physical features. As the system is used by mobile computing devices, each mobile device may calculate and compare relative positioning data between the trackable features. The system may connect and group the trackable features hierarchically, as measurements are obtained. As additional measurements are made of the trackable features in a group, the relative position data may be improved, e.g., using statistical methods.
47 Citations
25 Claims
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1. A computer-implemented method for accurately locating augmented reality (AR) content, the method comprising:
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measuring, using one or more sensors of a computing device, a first six-degree-of-freedom (DOF) vector between a first vantage point of the computing device and a first trackable feature in a first sensor range of the computing device; measuring, using the one or more sensors of the computing device, a second six-DOF vector between a second vantage point of the computing device and a second trackable feature in a second sensor range of the computing device; measuring, using the one or more sensors of the computing device, a third six-DOF vector between the first vantage point and the second vantage point; estimating, based on the first vector, the second vector, and the third vector, using a processor of the computing device, a fourth six-DOF vector between the first trackable feature and the second trackable feature; storing the estimated fourth vector in a data store in association with the first trackable feature and the second trackable feature, such that the estimated fourth vector represents a spatial relationship between the first trackable feature and the second trackable feature; determining, within a common spatial coordinate system, a first set of spatial coordinates for the first trackable feature and a second set of spatial coordinates for the second trackable feature; and storing, in the data store, the first set of spatial coordinates associated with the first trackable feature and the second set of spatial coordinates associated with the second trackable feature, such that the first and second sets of spatial coordinates represent respective locations of the first and second trackable features within the common coordinate system; wherein the data store includes a fifth six-DOF vector representing a spatial relationship and an orientation of an AR content item relative to the first trackable feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A computer-implemented method, comprising:
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maintaining, in a data store, a set of trackable points, each trackable point representing a trackable physical feature to which an augmented reality (AR) content item is tetherable; for each trackable point in the set of trackable points, maintaining a first set of estimated spatial values and a second set of estimated spatial values in the data store, the first set of estimated spatial values representing a position of the respective trackable point in a respective group coordinate system, and, by extension, one or more spatial relationships between the respective trackable point and all other trackable points of a respective group of trackable points positioned within the respective group coordinate system, and the second set of estimated spatial values representing a position of the respective trackable point in a respective global coordinate system; obtaining first measurement data using at least one first mobile computing device, the first measurement data comprising a plurality of first measurements relating to a plurality of onsite trackable physical features within a selected real-world environment, the at least one first mobile computing device being onsite with respect to the selected real-world environment; for each first set of spatial values corresponding to the plurality of onsite trackable physical features, maintaining a respective uncertainty value corresponding to the first measurement data; obtaining second measurement data using at least one onsite second computing device, the second measurement data comprising at least one second measurement relating to the plurality of onsite trackable physical features within the selected real-world environment; and updating the first and second estimated spatial values of at least one trackable point in the set of trackable points, based on the second measurement data. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification