Logical structural filters

Edward R. Dougherty; Yidong Chen

doi:10.1117/1.601900

1 June 1998 Logical structural filters

Edward R. Dougherty, Yidong Chen

Optical Engineering, Vol. 37, Issue 6, (June 1998). https://doi.org/10.1117/1.601900

Binary granulometric filters are formed from unions of parameterized openings, a point passing the filter if and only if a translate of at least one structuring element fits in the image and contains the point. A granulometry induces a reconstructive granulometry by passing any image component not eliminated by the granulometry. As historically studied in the context of Matheron's granulometric theory, reconstructive granulometries appear as unions of reconstructive parameterized openings. The theory is extended to a much wider class of filters: a logical structural filter (LSF) is formed as a union of intersections of both reconstructive and complementary reconstructive openings. A reconstructive opening passes a component if and only if at least one translate of the structuring element fits inside; a complementary reconstructive opening passes a component if and only if no translate of the structuring element fits inside. The original reconstructive granulometries form the special class of disjunctive LSFs. Complement-free LSFsform granulometries in a slightly more general sense; LSFs containing complements are not increasing and therefore not openings. Along with the relevant algebraic representations for LSFs, the theories of optimal and adaptive granulometric filters are extended to LSFs, a systematic formulation of adaptive transitions is given, transition probabilities for adaptation are found, and two applications to biological imaging are presented.

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Edward R. Dougherty and Yidong Chen "Logical structural filters," Optical Engineering 37(6), (1 June 1998). https://doi.org/10.1117/1.601900

Published: 1 June 1998

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