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Multidimensional discrete convolution
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<p>In signal processing, multidimensional discrete convolution refers to the mathematical operation between two functions <i>f</i> and <i>g</i> on an <i>n</i>-dimensional lattice that produces a third function, also of <i>n</i>-dimensions. Multidimensional discrete convolution is the discrete analog of the <a href="/facts/Convolution/PVPrdz9J">multidimensional convolution</a> of functions on <a href="/facts/Euclidean_space/R2UbzmzM">Euclidean space</a>. It is also a special case of <a href="/facts/Convolution/PVPrdz9J">convolution on groups</a> when the <a href="/facts/Group_(mathematics)/IQTYqINt">group</a> is the group of <i>n</i>-tuples of integers. </p>