Torus. Predictor-Corrector method. Convolution. Computing the inverse of the convolution operation is known as deconvolution.
Definition[edit] The convolution of f and g is written f∗g, using an asterisk or star. It is defined as the integral of the product of the two functions after one is reversed and shifted. As such, it is a particular kind of integral transform: While the symbol t is used above, it need not represent the time domain. Convolution. A convolution is an integral that expresses the amount of overlap of one function as it is shifted over another function .
It therefore "blends" one function with another. For example, in synthesis imaging, the measured dirty map is a convolution of the "true" CLEAN map with the dirty beam (the Fourier transform of the sampling distribution).