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<p>The E-filter is a homomorphic filter proposed by D.J.H. Moore and D.J. Parker (1973) which differentiates the small and large amplitude components of a signal. A description is given of a generalization of the E-filter to include a control parameter. Selective tuning of this parameter causes the behavior of the E-filter to range from linear to highly nonlinear. It is found that the E-filter can be simply implemented and has several properties which make it attractive for use in edge detection problems. The superiority of the E-filter to sale-space filtering for edge detection in one-dimensional systems is shown.</p>
pattern recognition; E-filter; edge detection; sale-space filtering; one-dimensional systems; filtering and prediction theory; pattern recognition
N. Saito, M.A. Cunningham, "Generalized E-filter and Its Application to Edge Detection", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 12, no. , pp. 814-817, August 1990, doi:10.1109/34.57671
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