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using:video_filter_sharpen [2012/11/11 08:51] (current)
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|+||====== Video filter Sharpen ======|
|+||Part of the [[Video filter Gauss smooth|convolution filter family]], this filter is interesting as it has negative values in the convolution matrix. It sharpens the image by enhancing difference between near pixels. It can lead to artifacts if the source has a lot of contrast already.|