Huge image editing

[Bla]

Does anyone know of a malware-free image editor that can be used to edit huge images? And by huge I mean something like 25.000 ● 25.000 pixels... For example. The larger the better, hopefully even more than 50.000 ● 50.000.

Conclusions: GIMP and ImageMagick are free and able to edit huge images.

[Dan Dixon]

Here's one program that can process really large images:
http://www.imagemagick.org/script/architecture.php#tera-pixel

What are you wanting to do with such large images?

[Bla]

Thanks a lot, I'll try and see if I can make that work.

I draw cities, and many of those are a part of a big map of connected cities I called "Blaland". I started on that about four years ago, and it has reached a size of 81 A4 papers. But, my scanner scans an A4 paper with a resolution of 2409 ● 3437 pixels, and it can't take the borders (I got this to be about 91 pixels when the borders are added together). I think it would be sad to resize it, so I wanted to collect it into an image of 22.409 (EU)/22,409 (US) ● 31.661 (EU)/31,661 (US) pixels. = 709,49 (EU)/709.49 (US) megapixels.

[Dan Dixon]

Here's an post about the size limits of Photoshop CS4: 300000 x 300000
http://help.adobe.com/en_US/Photoshop/11.0/WSfd1234e1c4b69f30ea53e41001031ab64-7943a.html

[Bla]

Thanks. Adobe Photoshop CS5 looks very expensive, 699 or 999 US$. I couldn't find CS4 though.
But do you know how to start ImageMagick? I've extracted the files. There's no .exe, so I assumed I had to use the command prompt, I just couldn't find what to write on the site.

Edit: I found out that GIMP was able to edit my large image perfectly, thanks for the other program though.