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Image Filtering: Difference between revisions
→Mean filter
(Created page with "Filtering an image refers to sampling an image in a way that resolve aliasing. Since images are a 2D signal, image filtering is a type of [[Wikipedia: Filter (signal processing) signal filtering]. ==Denoising== ===Mean filter=== Simply take the mean of all pixels in the neighborhood. ===Median filter=== Median of pixels in a neighborhood. This preserves edges. ===Gaussian filter=== Convolve the image with a gaussian kernel.<br> This is similar to a mean filter but p...") |
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===Mean filter=== | ===Mean filter=== | ||
Simply take the mean of all pixels in the neighborhood. | Simply take the mean of all pixels in the neighborhood. Also known as a box filter. | ||
===Median filter=== | ===Median filter=== | ||