METHOD, MEASURING DEVICE, MACHINING SYSTEM AND COMPUTER PROGRAM PRODUCT FOR DETERMINING A CORRECTED HEIGHT SIGNAL FROM MEASUREMENT DATA OBTAINED WITH OPTICAL COHERENCE TOMOGRAPHY

A method, measuring device, machining system and computer program product are provided for determining a corrected height signal from measurement data obtained with optical coherence tomography. The measurement data comprises an object signal and a background signal superimposed on the object signal...

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Bibliographische Detailangaben
Hauptverfasser:	Lessmüller, Eckhard, Truckenbrodt, Christian
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING TESTING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method, measuring device, machining system and computer program product are provided for determining a corrected height signal from measurement data obtained with optical coherence tomography. The measurement data comprises an object signal and a background signal superimposed on the object signal, the object signal and the background signal being subject to different dispersion. A first transformation is performed comprising transforming the measurement data, the first transformation being targeted at the background signal to obtain a height signal, background components in the height signal are determined, the background components in the height signal are compensated to obtain a background-compensated height signal, an inverse transformation is performed comprising back-transforming the background-compensated height signal to obtain background-compensated measurement data, dispersion compensation for the object signal is performed to obtain dispersion-compensated and background-compensated measurement data, and a second transformation is performed comprising transforming the dispersion-compensated and background-compensated measurement data to obtain a dispersion-compensated and background-compensated height signal.