A wavelet transform filter is disclosed having a pair of line buffers, three
pairs
of high and low pass filter pairs, two pairs of cascaded delays, and first and
second delays, where the second pair of cascade delays is coupled to the first
output and has fourth and fifth delay outputs, and a third high pass filter element
having inputs coupled to the first output and the fourth and fifth delay output,
where the third high pass filter element generates a fifth output of coefficients
in the HH subband. A second delay coupled to the fifth output and has a sixth delay
output. A third low pass filter element has inputs coupled to the fifth output,
the sixth delay output and the fifth delay output and generates a sixth output
corresponding to the coefficients in the HL subband.
