We developed a system for detecting the position of a label on a plastic case. The goal was to detect whether the label is correctly placed on the plastic case.

Image capture and processing

The camera captures the image and stores it on the Raspberry Pi microcomputer. The program was designed in Python using openCV. The camera is mounted at an angle to eliminate glare, and the lighting allows for constant capture conditions.

Test results

The developed system was tested with a set of plastic cases with a label attached. The image with the green traffic light shows a suitable case. The image with the orange traffic light shows a borderline case, where the traffic light is red, the case is unsuitable.