Compare a drawing to letters
<p>I'm allowing a user to draw on a canvas. Once tapped OK, I want to compare the drawing with one or more letters (could be double byte). How do I best map the drawing to the letter sequence?
I need an approach for scaling, comparing and visualizing. For the later I though to use a 3 color approach: mapping pixels black, letter only pixels green, drawing only pixels red. Would that work?</p>
