We present a method for ordering the wavelet coefficient information i
n a compressed bitstream that allows an image to be sequentially decod
ed, with lower memory requirements than conventional wavelet decompres
sion schemes. We also introduce a hybrid filtering scheme that uses di
fferent horizontal and vertical filters, each with different depths of
wavelet decomposition. This reduces decoder memory requirements by re
ducing the instantaneous number of wavelet coefficients needed fbr inv
erse filtering.