convolution -
A function which maps a tuple of sequences into a sequence of tuples.
Wikipedia
Convolution is a mathematical operation on two functions f and g, producing a third function that is typically viewed as a modified version of one of the original functions. Convolution is similar to cross-correlation. It has applications that include statistics, computer vision, image and signal processing, electrical engineering, and differential equations.
OmegaWiki Dictionary
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convolution An image processing technique in which each pixel is altered by some function of the surrounding pixels.
convolution A mathematical operation on two functions, producing a third function that is typically viewed as a modified version of one of the original functions.
