This article opened for me a Pandora's box of curiosity. For anyone interested, this is an excellent introduction to some of the concepts: https://web.archive.

This article opened for me a Pandora's box of curiosity. For anyone interested, this is an excellent introduction to some of the concepts: https://web.archive.org/web/20060210112754/http://cns-alumni.bu.edu/~slehar/fourier/fourier.html https://web.archive.org/web/20060210112754/http://cns-alumni... Fourier analysis is currently used in "Image processing to remove periodic or anisotropic artifacts such as jaggies from interlaced video, strip artifacts from strip aerial photography, or wave patterns from radio frequency interference in a digital camera." Also, "JPEG compression uses a variant of the Fourier transformation (discrete cosine transform) of small square pieces of a digital image. The Fourier components of each square are rounded to lower arithmetic precision, and weak components are eliminated entirely, so that the remaining components can be stored very compactly. In image reconstruction, each image square is reassembled from the preserved approximate Fourier-transformed components, which are then inverse-transformed to produce an approximation of the original image." Source for both quotes: https://en.wikipedia.org/wiki/Fourier_analysis https://en.wikipedia.org/wiki/Fourier_analysis