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Noise reduction is an important pre-processing step in image processing. The undesirable side effect of many noise reduction methods is that they always blur the characteristic information of the images, the boundaries, which are supposed to be enhanced in image processing. Understanding the digital image as an uniform sample of a spatial curve and the de-noising process as the evolution of the spatial...
A novel adaptive image filter is proposed for noise reduction and edge detection where the decimal object scale is adopted to detect the size of the local structure. The image filter contains two parts: an adaptive median filter and an adaptive Gaussian filter. Its main idea is: the strong noise points are removed by using an adaptive median filter which smoothes the image selectively according to...
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