ImageMagick: How to blur an image

by on Jun.11, 2020, under Random()

We may use the imagemagick convert command to blur a picture like this:

convert input.png -blur 0x25 output.png

The syntax for the -radius parameter is {radius}x{sigma} so in the example above we used a radius of 0 and a sigma of 25. The sigma value can be thought of as the size of the brush used to blur the image.

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