(Click on the image if you're that interested in my handwriting (^^;))
I can't believe I can still manage to solve such a tedious problem by hand after all these years... of course, not without any mistakes... (^^;)
And no... I'm not doing this for fun (>.<) Kids, this is how you apply Mathematics to solve hairy Computer Vision problems... and now you know that SPM Maths is peanuts (>,<)