Patent ID: 9147241
Filing Date: 2015-09-29
Classification: G01N,G06T

Abstract:
1. A glass bottle inspection method for detecting a defect at a specific location of a glass bottle by producing a template serving as a reference image based on images of a defect-free glass bottle which have been captured previously using an illuminating unit and a camera, and by comparing an image of the glass bottle to be inspected with the template, the glass bottle inspection method comprising: successively producing differential images from original images which are successively captured from the glass bottle to be inspected while the glass bottle is being rotated about its own axis; comparing said differential images with said template to judge whether the glass bottle is defect-free or not, and combining all the differential images obtained from the glass bottle to be inspected in one inspection cycle to produce a differential composite image; using said differential composite image as a provisional template when all the differential images obtained from the glass bottle in one inspection cycle are judged as representing a defect-free glass bottle; and correcting said template using said provisional template.