Blurring - is there a way to do it?

Resampled image returns noticable distortion

[adni18]

Hello. I created a script that successfully resizes and resamples an image, but it leaves noticable distortion which I think could be eliminated by blurring the image a bit. How can this be done with PHP? Can it be done?

[jatar_k]

I don't know of anything using GD to just blur an image but take a look through the PHP image functions [php.net] and see if I missed anything.