blur an image by imagemagick

m a newbie in imagemagick...nd i wanted to know how to use some simple basic activities on an image by using imagemagic...i开发者_运维百科've also downloaded test project of imagemagic..but facin some problem..

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You've put the tag "iphone" on this question, which makes me think you're blurring your image on a web server and then pulling it down to an iPhone.

There's a library I recently discovered but haven't had the opportunity to use yet that does image manipulations right on the phone. See here: http://code.google.com/p/simple-iphone-image-processing/