Thanks to [Ignacio Segura](http://www.isegura.es/blog/stop-spam-your-site-being-invisible-honeytrap-drupal-comments-form) I have a new anti-spambot measure. Users won’t notice it (unless they browse with CSS turned off, or other such unusualness). Hopefully this will mean that a) I don’t have to “disapprove” loads of comment span every day, and b) I can allow anonymous commenting without having to approve it before it becomes visible.
Category: Uncategorised
Comparing edge detectors with noisy images
Thanks to Ioannis for the stimulus – I’ve [compared a Sobel edge detector with a very simple edge detector](/node/50)…
/node/50