Color Perception

We all know that our perception of color is influenced by surrounding colors, but this is hard to believe. The two center cross pieces on the image below are the same color.



















If you don't believe it go here and use the mask (illusion #3).

If you still don't believe it drop it in photoshop and see for yourself!

User Centered Design Diagrams

I came across this page while reading Rosenfeld's blog. It has some really interesting User Centered Design diagrams and graphical representations of the process. It seems like everyone has a different take on it. Check'em out.