A hard disk drive manufacture process may use a database to track the sliders stored within a slider tray. Instead of requiring an operator to visually inspect each tray to confirm that the database information is accurate, the trays may be sent to a detection system that uses a computer vision technique to identify the total number of sliders in a tray. In one embodiment, the computer vision technique may also determine where the sliders are stored in the slider tray—e.g., a particular row and column. If the information obtained using the computer vision technique differs from the information stored in the database, the system may perform one or more actions for correcting the discrepancy. In this manner, the computer vision technique may be used to update and confirm the slider tracking information stored in the database.