Cleaning up jpeg artefacts with Imagemagic?

[joew]

Hello,

I have scanned a bunch of documents, which I'd like to run through OCR and archive. Unfortunately, the scanner supports only high jpeg compression, so I got lots of artefacts.

I searched the web for methods to remove those artefacts with imagemagic. But I found only a guide for GIMP (http://plasmasturm.org/log/124/)

Any hints how this could be translated with imagemagick?

[snibgo]

IM has similar tools for blurring and sharpening. If you post up a sample, someone might experiment.

[joew]

How can I upload such an image?

[snibgo]

Put it on the web somewhere, such as dropbox.com, and paste the URL here.