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首页> 外文期刊>IEE Proceedings. Part K, Vision, image, and signal processing >Image detail-preserving filter for impulsive noise attenuation
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Image detail-preserving filter for impulsive noise attenuation

机译：保留图像细节的滤波器以减少脉冲噪声

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摘要

A new nonlinear filter is proposed for attenuating impulsive noise while preserving image details. The filter truncates the grey value of a pixel to the maximal or minimal value of its enclosed surrounding band. Impulsive noise inside the band is thus attenuated while image details are preserved as long as they stretch to the band. The recursive form of the proposed filter leads to a simple architecture for fast implementation. Theoretical analysis and experimental results demonstrate the effectiveness of this new filter for both noise attenuation and detail preservation. For moderately contaminated images, as shown in the experiments, the proposed filter outperforms the standard median filter, the centre-weighted median filter and the unidirectional multistage median filter in terms of mean absolute error and filtering speed.
机译：提出了一种新的非线性滤波器，用于在保留图像细节的同时衰减脉冲噪声。滤镜将像素的灰度值截断为其封闭的周围波段的最大值或最小值。频带内的脉冲噪声因此被衰减，同时图像细节只要延伸到频带就被保留。所提出的滤波器的递归形式导致了用于快速实现的简单架构。理论分析和实验结果证明了该新型滤波器对于噪声衰减和细节保留的有效性。如实验所示，对于中等污染的图像，在平均绝对误差和滤波速度方面，所提出的滤波器优于标准中值滤波器，中央加权中值滤波器和单向多级中值滤波器。

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