ch08: add kvm classifier demo
fix typo in comment
ch08: add svm to hand classification demo
ch08: ocr demo
ch08: code for finding edges in axis-aligned sudoku images
ch08: run ocr on extracted sudoku cells
ch08: add warping example (needs 14s for warping)
ch08: Make warping 480x as fast (14.4s -> 0.03s).