Efficient segmentation of degraded images by a neuro-fuzzy classifier

Ramiro Castellanos, Sunanda Mitra

Research output: Contribution to conferencePaper

Abstract

Segmentation of degraded images has always been a difficult problem to solve. Efficient object extraction from noisy images can be achieved by neuro-fuzzy clustering algorithms where noise pixels are identified during the clustering process and assigned low weights to avoid their degradation effect on prototype validity. We present here a new approach to noise reduction prior to segmentation by using a two step process namely AFLC (adaptive fuzzy leader clustering)-median. This new two step process has been specifically tailored to remove speckle noise. The first step is to use the AFLC that has been designed to follow leader clustering using a hybrid neuro-fuzzy model developed by integrating a modified ART-1 model with fuzzy-C-means (FCM). This integration provides a powerful yet fast method for recognizing embedded data structure. In speckled imagery, AFLC is used to isolate the speckle noise pixels by segmenting the image into several clusters controlled by a vigilance parameter. Once the speckles have been identified, a median filter is used centered on each speckle noise pixel. The resulting image after undergoing the AFLC-median process demonstrates reduction of speckle noise while retaining sharp edges for improved segmentation.

Original languageEnglish
Pages517-521
Number of pages5
StatePublished - 1999
EventProceedings of the 1999 18th International Conference of the North American Fuzzy Information Processing Society - NAFIPS'99 - New York, NY, USA
Duration: Jun 10 1999Jun 12 1999

Conference

ConferenceProceedings of the 1999 18th International Conference of the North American Fuzzy Information Processing Society - NAFIPS'99
CityNew York, NY, USA
Period06/10/9906/12/99

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    Castellanos, R., & Mitra, S. (1999). Efficient segmentation of degraded images by a neuro-fuzzy classifier. 517-521. Paper presented at Proceedings of the 1999 18th International Conference of the North American Fuzzy Information Processing Society - NAFIPS'99, New York, NY, USA, .