Methods, apparatus and articles of manufacture to detect shapes
First Claim
Patent Images
1. A method, comprising:
- determining, by executing an instruction with a processor, a measured distance from an image capturing device to an object outline detected in image data representative of an environment, the determining of the measured distance including aggregating a plurality of depth values associated with the object outline;
when the measured distance corresponds to a first distance, selecting, by executing an instruction with the processor, a first group of reference shapes from a database for comparison to the object outline, the first group representing a subset of a collection of reference shapes in the database, the first group being selected to meet a first likelihood threshold of being detected at the first distance, the first likelihood threshold being different from a second likelihood threshold used to select a second group of reference shapes when the measured distance corresponds to a second distance different from the first distance; and
limiting comparison of the object outline to the reference shapes of the first group to reduce computational resource usage relative to comparing the object outline to each one of the collection of reference shapes in the database.
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Abstract
Methods, apparatus, and articles of manufacture to detect shapes are disclosed. An example method includes determining a depth value associated with an object outline detected in image data representative of an environment; and using the depth value to select a first group of reference shapes to be compared to the object outline from a collection of reference shapes, the first group representing a portion of the collection of reference shapes.
20 Citations
15 Claims
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1. A method, comprising:
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determining, by executing an instruction with a processor, a measured distance from an image capturing device to an object outline detected in image data representative of an environment, the determining of the measured distance including aggregating a plurality of depth values associated with the object outline; when the measured distance corresponds to a first distance, selecting, by executing an instruction with the processor, a first group of reference shapes from a database for comparison to the object outline, the first group representing a subset of a collection of reference shapes in the database, the first group being selected to meet a first likelihood threshold of being detected at the first distance, the first likelihood threshold being different from a second likelihood threshold used to select a second group of reference shapes when the measured distance corresponds to a second distance different from the first distance; and limiting comparison of the object outline to the reference shapes of the first group to reduce computational resource usage relative to comparing the object outline to each one of the collection of reference shapes in the database. - View Dependent Claims (2, 3, 4, 5)
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6. A tangible machine readable storage medium comprising instructions that, when executed, cause a machine to at least:
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determine a measured distance from an image capturing device to an object outline detected in image data representative of an environment, the measured distance determined by aggregating a plurality of depth values associated with the object outline; when the measured distance corresponds to a first distance, selecting, for comparison to the object outline, a first subset of a collection of reference shapes from a database likely to be detected at the first measured distance, the first subset being selected to meet a first likelihood threshold of being detected at the first distance, the first likelihood threshold being different from a second likelihood threshold used to select a second subset of the collection of reference shapes when the measured distance corresponds to a second distance different from the first distance; and limit comparison of the object outline to the reference shapes of the first subset to reduce computational resource usage relative to comparing the object outline to each one of the collection of reference shapes of the database. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus, comprising:
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a calculator to calculate a first distance from an image capturing device to an object outline detected in image data representative of an environment by aggregating a plurality of depth values associated with the object outline; a selector to select, based on the first distance, a first subset of reference shapes from a plurality of reference shapes in a database for comparison to the object outline, the first subset being selected to meet a first likelihood threshold of being detected at the first distance, the first likelihood threshold being different from a second likelihood threshold used to select a second subset of the collection of reference shapes when the measured distance corresponds to a second distance different from the first distance, at least one of the calculator or the selector being implemented via a logic circuit; and a comparator to limit comparison of the object outline to the reference shapes of the first subset to reduce computational resource usage relative to comparing the object outline to each one of reference shapes in the database. - View Dependent Claims (12, 13)
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14. A method, comprising:
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identifying, via a logic circuit, an object outline in image data generated by an image capturing device; determining, via the logic circuit, a first distance between the object outline and the image capturing device by aggregating a plurality of depth values associated with the object outline; identifying a first subset of a collection of reference shapes in a database, the first subset selected to meet a first likelihood threshold of being detected at the first distance, the first likelihood threshold being different from a second likelihood threshold used to select a second subset of the collection of reference shapes when the measured distance corresponds to a second distance different from the first distance; and limiting comparison of the object shape to at least some of the first subset of the collection of reference shapes to reduce computational resource usage relative to comparing the object outline to each one of the collection of reference shapes in the database. - View Dependent Claims (15)
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Specification