Method of operating a triangulation laser scanner to identify surface characteristics of a workpiece

Abstract

A method, computer readable medium, and measurement system of operating at least one triangulation laser scanner to identify surface properties of a workpiece to be measured by the at least one triangulation laser scanner. The laser scanner has a CMOS sensor chip, an optical imaging unit, and a laser line light source that generates laser lines on the workpiece; the data generated on the CMOS sensor chip in the image is reduced to the following data volume, the reduced data consisting only of Data on the actual lateral position of these pixels of the laser line and data on at least one quality criterion for each of these pixels of the laser line, the quality criterion being the measured value of the intensity distribution along a direction transverse to local orientation of the range of these image points of the laser line on the CMOS sensor chip; and analyze this quantity by at least one evaluation unit with respect to quality criteria related to the presence of barcode and / or detection code information and / or texture information The reduced data.

Description

technical field [0001] The invention relates to a method, a computer readable medium and a measurement system for operating a triangulation laser scanner having at least one CMOS sensor chip to identify surface properties of a workpiece to be measured. Background technique [0002] Triangulation laser scanners for capturing the surface coordinates of a workpiece to be measured are sufficiently known from the prior art. The latest triangulation laser scanners use a CMOS (complementary metal oxide semiconductor) sensor chip that makes it possible to capture image files in the so-called HDR format. Using a triangulation laser scanner, in order to evaluate the surface coordinates of the workpiece to be measured, the lateral deviation of the image position of the laser line with respect to its nominal position on the sensor chip is made equal to the distance to be passed by the triangulation laser scanner The classic triangulation method measures the distance of the surface of t...

AI Technical Summary

Problems solved by technology

However, the data transmitted so far by prior art triangulation laser scanners cannot be evaluated with respect to the presence of barcode information and / or the presence of texture information by prior art barcode evaluation and / or texture evaluation, Because the captured lateral X, Y position data of the laser line does not contain corresponding information items

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