Swage hole inspection using hough transform

Abstract

In the quality control section of the hard disk drive industrials, one of the important tasks is the
dimension measurement. One of the parts that are needed to be measured is a swage hole that has circular
shape. Since an accurate measurement is needed, a microscope is used to capture the swage hole. In this paper,
we utilized the Hough transform to measure the swage hole. To show the accuracy of the method, we compute
the Hough transform on two different data sets, i.e., a synthetic data set and a real-world data set. The results
show that the average error is 0.25 pixels for the synthetic data set whereas it is 6.66 micrometers for the realworld
data set.