Correlation on Noisy Images

摘要

A computer program can simulate star-shaped images and a correlation between two different images on 128 by 128 matrices. The Fourier transform, in a timesaving algorithm, is used to carry out the correlation. Different factors in the image (contrast, noise, size) are varied and the effects are observed. The results showed good correlation except when the contrast was low and the noise was high. Using a filtering function in the correlation process produced good results in improving poor correlation patterns. (Author)