Fourier transform is kind of like taking apart a puzzle, you start with a completed picture and end up with smaller pieces that each make up part of the whole.

And the change of silicone rubber surface structure by the Fourier Transform Infrared Spectroscopy (FTIR) is analyzed.

Wavelet and Fourier analyses are widely used in various fields of image processing. They can be utilized in land use remote sensing dynamic monitoring to detect change information automatically.