Figure 8. (a) Code for extracting the feature points and for computing cross correlation between the two images (b) Intermediate Cross Convolution FFT Step for DIC algorithm (c) High greyscale peak observed on convolution between two ZOIs

From

Digital Image Correlation using GPU Computing Applied to Biomechanics

Amarjot Singh, S.N. Omkar

Biomedical Science and Engineering. 2013, 1(1), 1-10 doi:10.12691/bse-1-1-1