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Reference.org
Hit-or-miss transform
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<p>In <a href="/facts/Mathematical_morphology/qVpYux75">mathematical morphology</a>, hit-or-miss transform is an operation that detects a given configuration (or pattern) in a <a href="/facts/Binary_image/qaKaPntY">binary image</a>, using the morphological <a href="/facts/Erosion_(morphology)/CkHHo65Q">erosion</a> operator and a pair of <a href="/facts/Disjoint_sets/nLr8XRVd">disjoint</a> <a href="/facts/Structuring_element/aSQ6x1xM">structuring elements</a>. The result of the hit-or-miss transform is the set of positions where the first <a href="/facts/Structuring_element/aSQ6x1xM">structuring element</a> fits in the foreground of the input image, and the second structuring element misses it completely. </p>