An adaptive vision measurement method, system, computer readable storage medium and computer program product

Abstract

The present application relates to the field of machine vision and precision measurement, and discloses a kind of self-adapting vision measurement method, system, computer readable storage medium and computer program product, the method comprises: the corresponding calibration parameter set of each layer step surface in the gray image of calibration board is calculated, and calibration lookup table is constructed;According to the actual height of the workpiece to be measured, the best calibration parameter set is adaptively matched from the calibration lookup table;The 2D measurement image of the workpiece to be measured is corrected, and the corrected image is obtained;The feature of the corrected image is extracted, and the actual size and / or positioning coordinate of the workpiece to be measured are calculated based on the image coordinate of the workpiece to be measured.The present application introduces line laser height sensing mechanism in existing imaging system, and establishes calibration parameter model under multiple height conditions, so that the system can adaptively adjust imaging and measurement parameters according to the actual height state of the workpiece, thereby effectively compensating for the imaging error caused by the change of the height of the workpiece, and significantly improving the measurement accuracy.

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