Pearl size measuring method based on machine vision

The invention provides a pearl size measurement method based on machine vision, and the method comprises the steps: fixing a to-be-measured sample pearl in a charging tray on a workbench, and enabling the pearl to be presented in the center of an image of a machine vision system; after it is confirmed that all the pearls appear in the image vision field of the machine vision system and are still, pearl images are photographed through a camera module and uploaded to the machine vision system; selecting a pearl type in an interface of the machine vision system, clicking a start detection button, and obtaining an imaging image size of the pearl; after detection is completed, clicking determination is carried out, and the minimum size numerical value and the maximum size numerical value in the detected sample pearl are displayed in the export table according to the measurement image and the measurement data result. The method has the beneficial effects that simultaneous detection of multiple pearls can be automat