Random-valued impulse noise detector for switching median filters using edge detectors
Random-valued impulse noise detector for switching median filters using edge detectors
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DOI：
10.1109/icspcs.2009.5306432
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发表时间：
2009-10
期刊：
影响因子：
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通讯作者：
Robert Grou-Szabo;T. Shibata
中科院分区：
文献类型：
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作者：
Robert Grou-Szabo;T. Shibata
本文讨论了一种随机脉冲噪声检测方案，该方案被开发用作开关中值滤波器的第一级。首先通过使用具有动态阈值的边缘检测器，通过逐渐改变边缘检测器的阈值来揭示隐藏的伪影。然后，通过对边缘图应用一系列掩模，对伪影进行精确定位和制表。通过对统计数据的分析，估计了破坏像素的随机脉冲噪声的强度。然后，该信息可以被传递到自适应降噪滤波器，该滤波器可以通过相关强度来消除它。
This paper talks about a random impulse-noise detection scheme that was developed to be used as the first stage of a switching median filter. First by using an edge detector with a dynamic threshold, hidden artifacts are revealed by gradually changing the threshold of the edge detector. Then by applying a series of masks to the edge maps, the artifacts are pinpointed and tabulated. By analyzing the statistical data, the intensity of the random impulse noise corrupting a pixel is estimated. This information can then be passed on to an adaptive noise reduction filter that can eliminate it with a correlated intensity.