Image processing

[IMAGE EDITING]
Rotation: 		http://softwarebydefault.com/2013/06/16/image-transform-rotate/
				http://stackoverflow.com/questions/13640422/math-get-image-dimension-after-rotation-in-javascript
				http://eab.abime.net/showthread.php?t=29492
Edge detection:	http://softwarebydefault.com/2013/06/22/compass-edge-detection/
Filters:		http://lodev.org/cgtutor/filtering.html
Image blending:	http://stackoverflow.com/questions/5919663/how-does-photoshop-blend-two-images-together

[CONCEPTS]
Pointers to Pointers:	http://www.eskimo.com/~scs/cclass/int/sx8.html