Useful Image Processing Tutorial Web Sites

Here is a short list of useful links for image processing that I have found over the last few years. Although most use Photoshop, you can still learn from them and apply the same principles using other software.

The first couple links aren't about image processing but I feel it necessary to learn much of the information contained within them to get a better understanding of Digital Photography.

http://www.cambridgeincolour.com/tutorials.htm
http://www.clarkvision.com/imagedetail/does.pixel.size.matter/

http://www.astropix.com/HTML/J_DIGIT/TOC_DIG.HTM
http://www.astronomyphotos.com/PhotoshopTechniques1.htm
http://www.astronomyphotos.com/PhotoshopTechniques2.htm
http://www.danielmccauley.com/tutorials.html
http://www.iceinspace.com.au/projects.html
http://www.geocities.com/ex_cathedra_3/Processing-Photoshop.html
http://www.budguinn.com/pages/tutorials/star%20elongation.htm

Lunar and Planetary Stacking and Processing with Registax
http://www.davesastro.co.uk/techniques/registax_tutorial/index.html
http://www.russsscope.net/staxtutorial.htm
http://www.astrophotography-tonight.com/registax-4-tutorial/
http://www.astro.shoregalaxy.com/webcam_astro.htm
http://www.scott-h.co.uk/word/?p=301
http://www.astronomie.be/registax/registax5usermanual.pdf

This last one is for a (DDP) Digital Development Processing Sharpening technique used for the processing of individual Color Channels before colorizing and combining. However I have found the technique to be useful for much more.