On Tue, 03 Aug 2004 04:56:54 +0200, Patrick Fey <evolt at fey-network.de> wrote: > A quick research on Google came up with this tutorial on how to do it > with PHP. You'll need PHP4 with GDlib installed. > > http://www.phpnoise.com/tutorials/1/1 > > HTH > > :-) Patrick Interesting article. It intrigued me enough to play a bit. I can't quite come up with the best way to distort the image to make it difficult to read by machines. I tried arcs and dashed lines, both with some degree of random placement. Dashed lines is definitely better than arcs, but I'm not satisfied with either. The article above doesn't address how to distort the image. I wonder if any evolters have experience or ideas with how to do this. I didn't come across any GD functions that would distort the actual text, so I think the only possibility is to have a interfering lines of some sort. Here are my tests. They are all WBMP format because that's the only thing that seemed to be enabled on the server. Not distorted: http://mwarden.f2o.org/sandbox/imgtest.php (source: http://mwarden.f2o.org/sandbox/viewsource.php?linemode=2&f=imgtest.php) Arcs: http://mwarden.f2o.org/sandbox/distortimgtest_arcs.php (source: http://mwarden.f2o.org/sandbox/viewsource.php?linemode=2&f=distortimgtest_arcs.php) Dashed lines: http://mwarden.f2o.org/sandbox/distortimgtest_dashes.php (source: http://mwarden.f2o.org/sandbox/viewsource.php?linemode=2&f=distortimgtest_dashes.php) (I'm still playing around, in case you happen to hit the URL and get a syntax error or something.) ANd if I come up with anything else or implement someone's suggestion from here, it'd end up here: http://mwarden.f2o.org/sandbox/ Ideas? -- Matt Warden Berry Neuroscience Lab Department of Psychology Miami University This email proudly and graciously contributes to entropy.