Generalized E-filter and its application to edge detection, (with M.A.Cunningham), IEEE Trans. Pattern Anal. Machine Intell., vol.12, no.8, pp.814-817, 1990.

Abstract

The E-filter is a homomorphic filter proposed by Moore and Parker which differentiates the small and large amplitude components of a signal. In this paper, we describe a generalization of the E-filter to include a control parameter. Selectively tuning this parameter causes the behavior of the E-filter to range from linear to highly nonlinear. We have found that the E-filter can be simply implemented and has several properties which make it attractive for use in edge detection problems. We have also shown the superiority of the E-filter to scale-space filtering for edge detection in one-dimensional systems.

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