The article describes the method of noise elimination is linear averaging over neighboring pixels in a spatial neighborhood. In this case, the arithmetic mean of its neighbors is used as the new value of the central p...
The article describes the method of noise elimination is linear averaging over neighboring pixels in a spatial neighborhood. In this case, the arithmetic mean of its neighbors is used as the new value of the central pixel. The larger the window size, the stronger the averaging occurs. Linear averaging partially impairs the perception of the image and complicates its further analysis, since it blurs the contours of objects. Adaptive filters are used to preserve the contours of objects in the image, which can change the filter coefficients in accordance with the features of the processed image. Most adaptive filters are local (implement "windowing"). For each position of the sliding processing window, either the filter mask counts are recalculated or the window configuration is changed. The disadvantage of adaptive filters is that the synthesis of these filters requires precise knowledge of some static characteristics of signals and noise, which is difficult in conditions of uncertainty in the field of application of video sensor-based computing devices.
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