Detecting the position of the sealring and the edge on the sensor chip

ALICE (A Large Ion Collider Experiment) is one of the physics projects developed by CERN. The project aims to observe the results of collisions between proton and proton, proton and nucleus, and nucleus with nucleus. Thousands of sensor chips are used to record the collision trajectory. Visual inspection with digital image processing has been developed to analyze the conditions of cutting the sensor chip, using the Hough Transform, Edge Detection, and Template Matching methods. The distance from the edge to the sealring chip will be used as a reference to determine how the condition of chip cutting. The results obtained are quite good and give a support for the next research process.