Optical measurement method and measurement system for determining 3D coordinates on a measurement object surface
First Claim
1. An optical measurement method for determining 3D coordinates of a multiplicity of measurement points of a measurement object surface, comprising the steps of:
- using a projector to illuminate the measurement object surface with a pattern sequence of different patterns;
using a camera system to record an image sequence of measurement object surface illuminated with the pattern sequence; and
determining the 3D coordinates of the measurement points by evaluating the image sequence of different brightness values from the different patterns for identical measurement points of the measurement object surface being determined in respective images of the recorded image sequence, wherein;
translational or rotational accelerations of the projector, of the camera system, or of the measurement object are measured, and the illumination of the measurement object surface or the recording of the image sequence are/is reactively adapted as a function of the measured accelerations results in an adjustment of illumination of the measurement object surface or the recording of the image sequence as a function of measured accelerations.
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Abstract
An optical measurement method for determining 3D coordinates of a plurality of measurement points on a measurement object surface. The measurement object surface is illuminated with a pattern sequence of different patterns by a projector, an image sequence of the measurement object surface illuminated with the pattern sequence is recorded with a camera system, and the 3D coordinates of the measurement points are determined by evaluating the image sequence, in particular wherein a succession of brightness values for identical measurement points on the measurement object surface is ascertained in respective images of the recorded image sequence. Translational and/or rotational accelerations of the projector, of the camera system and/or of the measurement object are measured here and, in dependence on the measured accelerations, the illumination of the measurement object surface and/or the recording of the image sequence is/are reactively adapted, in particular temporally substantially directly and live during the measurement process.
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Citations
26 Claims
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1. An optical measurement method for determining 3D coordinates of a multiplicity of measurement points of a measurement object surface, comprising the steps of:
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using a projector to illuminate the measurement object surface with a pattern sequence of different patterns; using a camera system to record an image sequence of measurement object surface illuminated with the pattern sequence; and determining the 3D coordinates of the measurement points by evaluating the image sequence of different brightness values from the different patterns for identical measurement points of the measurement object surface being determined in respective images of the recorded image sequence, wherein; translational or rotational accelerations of the projector, of the camera system, or of the measurement object are measured, and the illumination of the measurement object surface or the recording of the image sequence are/is reactively adapted as a function of the measured accelerations results in an adjustment of illumination of the measurement object surface or the recording of the image sequence as a function of measured accelerations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An optical measurement system for determining 3D coordinates for a multiplicity of measurement points of a measurement object surface, comprising:
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a projector for illuminating the measurement object surface with a pattern sequence from different optical patterns; a camera system for recording an image sequence of the measurement object surface illuminated with the pattern sequence; and an evaluation unit for determining the 3D coordinates of the measurement points from the image sequence by determining a sequence of different brightness values from the different patterns for identical measurement points of the measurement object surface in respective images of the recorded image sequence, wherein; inertial sensors are arranged on the projector, on the camera system, or on the measurement object in order to measure translational or rotational accelerations of the projector, of the camera system and/or of the measurement object, and the evaluation unit is designed to effect an adaptation, performed reactively as a function of the measured accelerations that results in an adjustment of illumination of the measurement object surface or the recording of the image sequence as a function of measured accelerations. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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Specification