Cosinusmuunnokselle
Cosinusmuunnokselle, often translated as the cosine transform, is a mathematical operation closely related to the Fourier transform. It is used to represent a function in terms of a series of cosine functions. Unlike the Fourier transform, which uses both sine and cosine functions, the cosine transform exclusively uses cosine components. This characteristic makes it particularly useful for signal processing and image compression applications where boundary conditions or symmetry properties lend themselves well to a cosine-only representation.
There are several variations of the cosine transform, including the Discrete Cosine Transform (DCT). The DCT