English · March 26, 2022

Systematic Error Correction Solutions For 3D Laser Scanning Measurement Device

Sometimes your computer may display a message about the systematic error correction of the 3D laser scanning measuring device. There can be several reasons for this problem.

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    Laser scanning is an applied laser for capturing 3D spatial data in the form of a cloud of matter. The use of laser navigation reduces errors in data collection and the need to revisit a website unexpectedly to miss details. Since these beautiful scanners emit laser pulses, people perceive the returning signal differently.

    How does a laser scanner measure distance?

    In various laser scanners, they are non-contact devices that collect millions of discrete pieces of data to measure an object, room, or space using infrared laser technology, which produces detailed 3D images in minutes. The images include millions of 3D data points known as the element cloud.

    Summary

    The advantage of non-contact measurement methods using laser scanners is the fast obtaining of high results. However, compared to their contact-based counterparts, these processes are known to be significantly accurate. The work presented in articles of this type aims to improve the accuracy associated with these methods through the Flip error method based on an experimental approach affecting mechanical parts. The effect on the three parameters that typically determine the relative position and orientation between the sensor and the surface can be characterized as learned. The process used to create an experimentglobal error model is presented and applied to a typical real part consisting of planes and inclined surfaces. Systematic errors decreased by half compared to the reference values, sometimes the errors slightly increased. This phenomenon is due to the fundamental fact that the error correction model does not take into account the internal response of the laser sensor. A second model has been developed that takes into account general local defects. Applying it to a test case of a mechanical part only shows improved results of this correction.

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  • Summary

    The laser triangulation probe conveniently acquires surface topography data from an emerging target. However, compared to a pressure sensor, its reliability and accuracy are adversely affected by various issues related to the quality of the object and the sensor itself. This status article is aimed at identifying possible signs of compensation to improve the accuracy of the laser triangulation sensor intensity measurement that cause these measurement errors due to the essential oil film on the measurement.surface, and in addition to considering aspects of the position and orientation of the sensor with respect to the measurement scheme (including scanning depth, angle of incidence and azimuth angle) of the object under consideration. A theoretical model based on geometrical optics and an empirical model for error estimation were created to quantify the influence of film and probe parameter errors. We also examined the effect pattern with various filtering methods with several contrast experiments. Verification procedures, measurement of both a free-form surface (chevron plate) and/or a large oil-lubricated measuring block show that these measurement and suggestion elements are viable tools for predicting theoretical errors and are used as reference compensations as a means of verification. film accuracy to improve laser depth triangulation capabilities.

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