Cognex vision systems use multidimensional imaging to verify cap height and tilt. In-Sight vision systems use edge detection technology to measure the distance between the top of the cap and the neck of the bottle, and the horizontal position of the top of the cap, to confirm that it meets the pre-defined limits. In this way, the vision system can determine whether the cap is screwed on tightly and is in a safe sealed state. Bottles that fail the cap height and tilt inspection will be rejected.