How to pixelate/blur an image using ImageMagick?

Question

I want to pixelate and/or blur an image. I've found the command for the blurring:

$convert image.jpg -blur 18,5 newimage.jpg

to work but I cannot blur the image any more. And how do I pixelate the image? I couldn't find a sound example around the net.

Thx

score 54 · Answer 1 · answered Feb 03 '09 at 10:35

54

To get a proper square pixellation, try:

convert -scale 10% -scale 1000% original.jpg pixelated.jpg

answered Feb 03 '09 at 10:35

score 9 · Accepted Answer · answered Dec 01 '08 at 16:13

9

This worked nicely for me, gives a sort of cross between pixelating and blurring:

convert -resize 10% image.jpg newimage.jpg
convert -resize 1000% newimage.jpg newimage.jpg

You can be sure that the data cannot be retrieved, should that be important to you.

Changing the %ages will change the amount of pixelation/blur

answered Dec 01 '08 at 16:13

Colin Pickard

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`-filter Point` gives strict pixelization – ivan866 May 04 '22 at 15:58

score -6 · Answer 3 · answered Dec 01 '08 at 16:09

-6

I don't know anything about ImageMagick, but you can try resizing the image using bicubic to a much smaller dimension, then resizing the image back to a bigger one.

The trick works using .net's System.Drawing object.

answered Dec 01 '08 at 16:09

Diodeus - James MacFarlane

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Actually, the validity of the question is still intact, so it doesn't matter. Anyways, I just saw the year dude, my bad..sorry! – dsignr Feb 09 '12 at 20:35

How to pixelate/blur an image using ImageMagick?

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