Jason (jcreed) wrote,
Jason
jcreed

-

Got a perfectly lossless discrete-valued wavelet-like transform.
_ _
Taking the average (a + b / v2) and detail (a - b/ v2)
amounts to rotating the pair of samples 45deg, so I
'rotate' about concentric squares instead of actually
rotating by staying on the same circle. Equivalently,
it's the conjugate of a 45deg rotation by a purely
radial transformation that takes every circle to a square
centered at the origin. Some care had to be taken at
the edge cases, though.
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