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US 11,885,612 B2Granted
Apparatus for three-dimensional measurement of an object, method and computer program with image-based triggering
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsJens Döge, Christoph Hoppe, Willi Neudeck
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Abstract
An apparatus for three-dimensional measurement of an object includes a trigger configured to obtain image information from a measurement camera and to trigger, in dependence on image content of the image information, a measurement output or an evaluation of the image information by an evaluator for determining measurement results. Further, a respective method and a respective computer program are described.
Claims27
An apparatus for three-dimensional measurement of an object, comprising:
- a trigger implemented in circuitry and configured to acquire image information from a measurement camera and to trigger, in dependence on image content of the image information, forwarding of the image information to an evaluator for determining measurement results or an evaluation of the image information by an evaluator for determining measurement results;
- wherein the trigger is configured to perform an image analysis or an analog processing of one or more image sensor analog signals or a processing of one or more digitized image sensor signals, wherein the image analysis or the analog processing of the one or more image sensor analog signals or the processing of one or more digitized image sensor signals is used to detect when the image content has shifted with respect to a reference image content by at least a predetermined shift or by more than a predetermined shift and to trigger, in dependence on the detection of a shift, forwarding of the image information or the evaluation of the image information by the evaluator for determining measurement results;
- wherein the trigger serves to detect a suitable or optimum point of time for the forwarding or for a further detailed evaluation of the image information;
- wherein the apparatus for three-dimensional measurement of an object is implemented using a hardware apparatus, or using a computer, or using a combination of a hardware apparatus and a computer.
1 more element
A method for three-dimensional measurement of an object, comprising:
- receiving image information from a measurement camera;
- and
- triggering, in dependence on image content of the image information, forwarding of the image information to an evaluator for determining measurement results or an evaluation of the image information by an evaluator for determining measurement results;
- wherein the method comprises detecting, using an evaluation by image analysis or using an analog processing of one or more image sensor analog signals, or using a processing of one or more digitized image sensor signals, when the image content has shifted with respect to a reference image content by at least a predetermined shift or by more than a predetermined shift and
- triggering, in dependence on the detection of a shift, forwarding of the image information or the evaluation of the image information by the evaluator for determining measurement results,
- wherein triggering serves to detect a suitable or optimum point of time for the forwarding or for a further detailed evaluation of the image information.
3 more elements
A non-transitory digital storage medium having a computer program stored thereon to perform the method for three-dimensional measurement of an object, the method comprising:
- receiving image information from a measurement camera;
- and
- triggering, in dependence on image content of the image information, forwarding of the image information to an evaluator for determining measurement results or an evaluation of the image information by an evaluator for determining measurement results;
- wherein the method comprises detecting when the image content has shifted with respect to a reference image content by at least a predetermined shift or by more than a predetermined shift and
- triggering, in dependence on the detection of a shift, forwarding of the image information or the evaluation of the image information by the evaluator for determining measurement results,
- wherein triggering serves to detect a suitable or optimum point of time for the forwarding or for a further detailed evaluation of the image information
- when said computer program is run by a computer.
4 more elements
A system:
- wherein the system is configured to perform a laser light section scan of an object or a scan of an object with a different light section,
- wherein the system comprises an apparatus for three-dimensional measurement of an object, comprising:
- a trigger implemented in circuitry and configured to acquire image information from a measurement camera and to trigger, in dependence on image content of the image information, forwarding of the image information to an evaluator for determining measurement results or an evaluation of the image information by an evaluator for determining measurement results;
- wherein the trigger is further configured to perform an image analysis or an analog processing of one or more image sensor analog signals or a processing of one or more digitized image sensor signals, wherein the image analysis or the analog processing of the one or more image sensor analog signals or the processing of one or more digitized image sensor signals is used to detect, by using a laser light section or a different light section, three-dimensional marks on a surface or two-dimensional optical characteristics along a laser line as features and to trigger, in dependence on detected features, forwarding of the image information or the evaluation of the image information by the evaluator for determining measurement results;
- wherein the trigger serves to detect a suitable or optimum point of time for the forwarding or for a further detailed evaluation of the image information;
- wherein the system is implemented using a hardware apparatus, or using a computer, or using a combination of a hardware apparatus and a computer, and wherein the circuitry comprising the trigger includes analog circuitry, digital circuitry, microprocessor based circuitry or a combination thereof.
3 more elements
A method for three-dimensional measurement of an object, comprising:
- acquiring image information from a measurement camera;
- and
- triggering, in dependence on image content of the image information, forwarding of the image information to an evaluator for determining measurement results or evaluation of the image information by an evaluator for determining measurement results;
- wherein by using a laser light section or a different light section, three-dimensional marks on a surface or two-dimensional optical characteristics along a laser line are detected, using an evaluation by image analysis or using an analog processing of one or more image sensor analog signals, or using a processing of one or more digitized image sensor signals, as features and wherein, in dependence on detected features, forwarding of the image information or the evaluation of the image information by the evaluator for determining measurement results is triggered,
- wherein the triggering serves to detect a suitable or optimum point of time for the forwarding or for a further detailed evaluation of the image information.
2 more elements
An apparatus for three-dimensional measurement of an object, comprising:
- a trigger implemented in circuitry and configured to acquire image information from a measurement camera and to trigger, based on an image content of the image information, forwarding of the image information to an evaluator for determining measurement results or an evaluation of the image information by an evaluator for determining measurement results;
- wherein the trigger is configured to perform an image analysis or an analog processing of one or more image sensor analog signals or a processing of one or more digitized image sensor signals, wherein the image analysis or the analog processing of the one or more image sensor analog signals or the processing of one or more digitized image sensor signals is used to detect, based on the image content, when the image content has shifted with respect to a reference image content by at least a predetermined shift or by more than a predetermined shift and to trigger, in dependence on the detection of a shift, forwarding of the image information or the evaluation of the image information by the evaluator for determining measurement results;
- wherein the trigger serves to detect a suitable or optimum point of time for the forwarding or for a further detailed evaluation of the image information;
- wherein the apparatus for three-dimensional measurement of an object is implemented using a hardware apparatus, or using a computer, or using a combination of a hardware apparatus and a computer, and wherein the circuitry comprising the trigger includes analog circuitry, digital circuitry, microprocessor based circuitry or a combination thereof.
1 more element
An apparatus for three-dimensional measurement of an object, comprising:
- a trigger implemented in circuitry and configured to acquire image information from a measurement camera and to trigger, based on an evaluation of an image content of the image information, forwarding of the image information to an evaluator for determining measurement results or an evaluation of the image information by an evaluator for determining measurement results;
- wherein the trigger is configured to perform an image analysis or an analog processing of one or more image sensor analog signals or a processing of one or more digitized image sensor signals, wherein the image analysis or the analog processing of the one or more image sensor analog signals or the processing of one or more digitized image sensor signals is used to detect, using the evaluation of the image content, when the image content has shifted with respect to a reference image content by at least a predetermined shift or by more than a predetermined shift and to trigger, in dependence on the detection of a shift, forwarding of the image information or the evaluation of the image information by the evaluator for determining measurement results;
- wherein the trigger serves to detect a suitable or optimum point of time for the forwarding or for a further detailed evaluation of the image information;
- wherein the apparatus for three-dimensional measurement of an object is implemented using a hardware apparatus, or using a computer, or using a combination of a hardware apparatus and a computer, and wherein the circuitry comprising the trigger includes analog circuitry, digital circuitry, microprocessor based circuitry or a combination thereof.
1 more element
Dependencies are inferred from the claim text.