Noncontact measuring device
First Claim
1. A system comprising:
- a handheld measurement device including;
means for acquiring pose measurement data corresponding to a current pose for the measurement device;
a first imaging device configured to acquire image data of a surface of an object located in a measurement region relative to the handheld measurement device;
a projected pattern generator configured to generate a pattern of structured light, wherein the pattern of structured light impacts the surface of the object within a field of view of the first imaging device when the object is located in the measurement region; and
a computer system configured to measure a set of attributes of the surface of the object by performing a measurement method including;
determining a proper pose angle for the measurement device using the pose measurement data;
activating the first imaging device;
processing the image data acquired by the first imaging device in response to the activating, wherein the processing includes determining a rotation of the measurement device with respect to a gravity vector using the image data and the proper pose angle; and
determining a measurement of at least one attribute of the surface of the object based on the processing, wherein the determining includes compensating for the current pose and the rotation of the measurement device.
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Abstract
A solution including a noncontact electronic measurement device is provided. The measurement device includes one or more imaging devices configured to acquire image data of a surface of an object located in a measurement region relative to the measurement device and one or more projected pattern generators configured to generate divergent pattern(s) of structured light, which impact the surface of the object within a field of view of the imaging device when the object is located in the measurement region. Using image data acquired by the imaging device(s), a computer system can measure a set of attributes of the surface of the object and/or automatically determine whether the measurement device is within the measurement region. An embodiment is configured to be held by a human user during operation.
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Citations
20 Claims
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1. A system comprising:
a handheld measurement device including; means for acquiring pose measurement data corresponding to a current pose for the measurement device; a first imaging device configured to acquire image data of a surface of an object located in a measurement region relative to the handheld measurement device; a projected pattern generator configured to generate a pattern of structured light, wherein the pattern of structured light impacts the surface of the object within a field of view of the first imaging device when the object is located in the measurement region; and a computer system configured to measure a set of attributes of the surface of the object by performing a measurement method including; determining a proper pose angle for the measurement device using the pose measurement data; activating the first imaging device; processing the image data acquired by the first imaging device in response to the activating, wherein the processing includes determining a rotation of the measurement device with respect to a gravity vector using the image data and the proper pose angle; and determining a measurement of at least one attribute of the surface of the object based on the processing, wherein the determining includes compensating for the current pose and the rotation of the measurement device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. The system of 1, wherein the pattern of structured light includes:
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a first plurality of lines; and a second plurality of lines substantially perpendicular to the first plurality of lines.
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8. A system comprising:
a handheld railroad wheel measurement device including; first and second imaging devices configured to acquire image data of a portion of a railroad wheel located in a measurement region relative to the handheld railroad wheel measurement device, wherein the image data acquired by the first imaging device has a field of view at least partially overlapping the image data acquired by the second imaging device when the railroad wheel is located in the measurement region; a projected pattern generator configured to generate a pattern of structured light, wherein the pattern of structured light impacts a surface of the railroad wheel within the fields of view of the first and second imaging devices when the railroad wheel is located in the measurement region; and a computer system configured to concurrently activate the first and second imaging devices and process the image data acquired by the first and second imaging devices, wherein the processing includes evaluating a set of attributes of the pattern of structured light in the image data to determine a rotation of the measurement device with respect to a gravity vector. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system comprising:
a measurement device including; a first imaging device configured to acquire image data of a surface of an object located in a measurement region relative to the handheld measurement device; a projected pattern generator configured to generate a pattern of structured light, wherein the pattern of structured light impacts the surface of the object within a field of view of the imaging device when the object is located in the measurement region; means for acquiring pose measurement data corresponding to a current pose for the measurement device; and a computer system configured to acquire data for measuring a set of attributes of the surface of the object by performing an acquisition method including; activating the first imaging device and the projected pattern generator; determining a pose of the measurement device using image data acquired by the first imaging device and the pose measurement data, wherein the determining includes evaluating a set of attributes of the pattern of structured light in the image data to determine a rotation of the measurement device with respect to a gravity vector; and evaluating at least one of;
the image data and the pose to determine whether the measurement device is within a measurement region.- View Dependent Claims (16, 17, 18, 19, 20)
Specification