Method and device for measuring features on or near an object
First Claim
Patent Images
1. A method comprising:
- acquiring an image of a viewed object using a video inspection device, the image including an anomaly present on or near the viewed object;
displaying the image in a measurement mode of the video inspection device;
determining the three-dimensional coordinates of a plurality of points on a surface of the viewed object using a central processor unit of the video inspection device;
selecting one or more reference surface points from the plurality of points on the surface of the viewed object;
determining a reference surface using the central processor unit, wherein the reference surface is determined based on the one or more of the reference surface points;
placing one or more reference surface cursors on one or more measurement pixels of the image;
determining a region of interest shape proximate to the anomaly based on two or more reference surface points;
determining one or more projected reference surface points associated with the one or more reference surface cursors on the reference surface using the central processor unit, wherein each of the one or more projected reference surface points are determined based on the intersection of a three-dimensional trajectory line from the one or more measurement pixels and the reference surface; and
determining the dimensions of the anomaly using the three-dimensional coordinates of at least one of the one or more projected reference surface points using the central processor unit.
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Abstract
A method and device for measuring dimensions of a feature on or near an object using a video inspection device. A reference surface is determined based on reference surface points on the surface of the object. One or more measurement cursors are placed on measurement pixels of an image of the object. Projected reference surface points associated with the measurement pixels on the reference surface are determined. The dimensions of the feature can be determined using the three-dimensional coordinates of at least one of the projected reference surface points.
126 Citations
21 Claims
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1. A method comprising:
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acquiring an image of a viewed object using a video inspection device, the image including an anomaly present on or near the viewed object; displaying the image in a measurement mode of the video inspection device; determining the three-dimensional coordinates of a plurality of points on a surface of the viewed object using a central processor unit of the video inspection device; selecting one or more reference surface points from the plurality of points on the surface of the viewed object; determining a reference surface using the central processor unit, wherein the reference surface is determined based on the one or more of the reference surface points; placing one or more reference surface cursors on one or more measurement pixels of the image; determining a region of interest shape proximate to the anomaly based on two or more reference surface points; determining one or more projected reference surface points associated with the one or more reference surface cursors on the reference surface using the central processor unit, wherein each of the one or more projected reference surface points are determined based on the intersection of a three-dimensional trajectory line from the one or more measurement pixels and the reference surface; and determining the dimensions of the anomaly using the three-dimensional coordinates of at least one of the one or more projected reference surface points using the central processor unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification