CODEWITHSUNDEEP
imagemagick
Jon Romero
Jon Romero

Reputation: 4090

How to pixelate/blur an image using ImageMagick?

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

Upvotes: 14

Views: 21105

Answers (3)

Answerer
Answerer

Reputation:

To get a proper square pixellation, try:

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

Upvotes: 57

Colin Pickard
Colin Pickard

Reputation: 46663

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

Upvotes: 9

Diodeus - James MacFarlane
Diodeus - James MacFarlane

Reputation: 114417

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.

Upvotes: -6

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