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using:video_filter_median_5x5 [2012/11/11 08:51] (current)
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|+||====== Video filter Median (5x5) ======|
|+||This is a version of the Median filter that takes a 5x5 matrix instead of a 3x3 one. The strong smoothing is especially efficient on analog video (e.g. captured from VHS) with chroma noise, rainbow effects (e.g. white credits on black background at the end of a movie) etc.(nbsp)(ndash) Median 5x5 applied only on chroma greatly reduces these artifacts.|
|+||Example - analog video with strong chroma noise:|
|+||Convolution filters applied on chroma clean it up:|