Recently I was working in photoshop, And photoshop is really great application. After using it for weeks, I am thinking about learning the logic behind the way it works. I tried few articles which was just about converting image to black n white, matching two exactly same images etc. My questions are
1) Can we develop application with features like photoshop?
2) Can I find any source, study material, books specially to work on pixels with photoshop? (I tried to search but I got only results about reading single pixel etc)
3) How can I match two images like the option in photoshop auto align - It aligns two layers by matching the pixels. So how can I match more than one pixel in the image?