One Area, Three Shapes

A sliding-window detector does not only need boxes of different sizes. It needs different shapes too: a standing person fills a tall, narrow box, while a car seen side-on fills a wide, flat one.

Run a sliding window on a single photo $384$ pixels wide and $256$ pixels tall, trying one box area in three shapes:

box	width	height
square	$64$	$64$
wide	$128$	$32$
tall	$32$	$128$

every box moves in steps of $16$ pixels, horizontally and vertically;
the first placement of every box is flush with the top-left corner;
a box is used only where it lies entirely inside the image.

Every placement of every box is one run of the classifier.

How many classifier runs does this one photo cost?

One Area, Three Shapes

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