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On the properties of some adaptive morphological filters for salt and pepper noise removal

Abstract : Mathematical Morphology (MM) is a tool that can be applied to many digital image processing tasks that include the reduction of impulsive or salt and pepper noise in grayscale images. The morphological filters used for this task are filters resulting from two basic operators: erosion and dilation. However, when the level of contamination of the image is higher, these filters tend to distort the image. In this work we propose a pair of operators with properties, that better adapt to impulsive noise than other classical morphological filters, it is demonstrated to be increasing idempotent morphological filters. Furthermore, the proposed pair turns out to be a ∧-filter and a ∨-filter which allow to build morphological openings and closings. Finally, they are compared with other filters of the state-of-the-art such as: SMF, DBAIN, AMF and NAFSM, and have shown a better performance in time-quality ratio when the noise level is above 50%.
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https://hal-emse.ccsd.cnrs.fr/emse-03205492
Contributor : Fatima Lillouch <>
Submitted on : Thursday, April 22, 2021 - 1:45:35 PM
Last modification on : Saturday, April 24, 2021 - 3:05:49 AM
Long-term archiving on: : Friday, July 23, 2021 - 6:33:31 PM

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Marisol Mares Javier, Carlos Guillén Galván, Rafael Lemuz López, Johan Debayle. On the properties of some adaptive morphological filters for salt and pepper noise removal. Image Analysis and Stereology, International Society for Stereology, 2021, 40 (1), pp.29 à 38. ⟨10.5566/ias.2418⟩. ⟨emse-03205492⟩

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