Search Algorithm for Determining the Illumination Frequency in a Line Scan Camera-Based Measurement System

Abstract

At the University of Miskolc, a machine vision-based measurement system was developed utilizing a line scan camera to capture images line by line as the object moves. A critical challenge in such systems is synchronizing the camera's exposure frequency with the lighting control pulse train. Discrepancies between these two frequencies could lead to periodic intensity variations in the image. To address this issue, a frequency search algorithm was developed. This algorithm compensates for differences between the camera's exposure signal and the lighting control signal, preventing resonance and intensity fluctuations. The paper details the algorithm's operation and related preliminary investigations.