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Edge-preserving smoothing
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<p>Edge-preserving smoothing or edge-preserving filtering is an <a href="/facts/Image_processing/zenalNCf">image processing</a> technique that smooths away noise or textures while retaining sharp edges. Examples are the <a href="/facts/Median_filter/YU4NdjKT">median</a>, <a href="/facts/Bilateral_filter/1z7dHYaJ">bilateral</a>, <a href="/facts/Guided_filter/dDX9JovP">guided</a>, <a href="/facts/Anisotropic_diffusion/HK9nIVKt">anisotropic diffusion</a>, and <a href="/facts/Kuwahara_filter/9peu6jem">Kuwahara</a> filters. </p>