That Spam Problem

Every blog on this machine now has the the spam words from my blog appended to their own!
Blog authors here should hopefully see a major decrease in the number of spam comments and trackbacks they have to moderate as I’m fairly diligent in updating my word list!
More on spam trackbacks to come later including mangled links to some of my content that was robbed to create a spam weblog. Thanks guys – just the motivation I needed to update my spam fight! nah nah nah! 😛

Using Image Calibration Techniques to Reduce Noise in Digital Images

This is interesting, especially after reading the TNG article on astronomy this morning where these ideas are used, it’s great to see it described in such detail! Basically, noise in digital cameras isn’t as random as may it may seem, and if you have a calibration image with that noise intact, you can subtract the noise from any photo.
This tutorial explains all that in more detail and could be very useful for cameras that take RAW images, but I verified that jpeg files can’t be manipulated so successfully unfortunately!

No JPEG image can have its noise reduced by the calibration steps described here – the data is too drastically altered by compression to allow dark or bias subtraction to work right.