KEYWORDS: Digital filtering, Image filtering, Image processing, Single mode fibers, Optical filters, Image quality, Optical engineering, Current controlled current source
Impulsive noise usually has adverse effect on image processing. It has been proved that adaptive median filter is
effective to impulsive noise removal. However, high percentage impulsive noise is still a challenge to adaptive median
filter. Thus, a sequential median filter is proposed in this paper. Adaptive median filter and median filter are combined in
sequence to handle high percentage impulsive noise. Moreover, variable window sizes are employed in the sequential
median filter. Experimental results indicate that the sequential median filter is effective for high percentage impulsive
noise removal.
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