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When combined with a synchronized camera, a structured light pattern generator can enable highly accurate 3D optical measurements.
Special attention is given to hardware selection (pattern generator and camera), and choice of structured light patterns.
Structured light systems speed up the measurement process by using a digital light pattern generator to display a known pattern of light onto the object, and a camera to capture the distortion of the pattern as it reflects from the object.
Structured light systems consist of a digital light pattern generator and at least one synchronized camera as shown in Figure 2.
Before projecting the light patterns it may be necessary to run a system calibration to obtain the relative position of the pattern generator and camera, improve accuracy by accounting for optical distortions, or determine the correspondence between projected and captured colors.
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