Abstract:
A generalization of the E-filter originated by Moore and Parker [10] from a one-dimensional filter to a nonlinear two-dimensional filter is presented. It is demonstrated ...Show MoreMetadata
Abstract:
A generalization of the E-filter originated by Moore and Parker [10] from a one-dimensional filter to a nonlinear two-dimensional filter is presented. It is demonstrated that the response of the E-filter is almost independent of the frequency of the incoming signal under certain conditions but depends largely on the signal amplitude. Consequently, it can be used to filter out low-amplitude noise which has been superimposed additively on the signal. The performance of a one-dimensional E-filter as applied sequentially to the rows and then the columns of a digitized image is compared with the direct application of a two-dimensional E-filter. A simple two-dimensional E-filter digital realization and several filtered biomedical images are presented to demonstrate the application of this nonlinear filtering technique.
Published in: IEEE Transactions on Systems, Man, and Cybernetics ( Volume: SMC-6, Issue: 6, June 1976)