Patent ID: 9503054
Filing Date: 2016-11-22
CPC Classification: G06T,H03H

Claim Text:
1. Apparatus for filtering a signal with a bi-orthogonal wavelet filter bank, the apparatus comprising: a decomposition bank configured to decompose a signal into high-pass and low-pass signal components using corresponding high-pass and low-pass filter decomposition kernels; a filtering processor configured to apply noise filtering to the high-pass and low-pass signal components, wherein noise filtering includes applying paired filters to a block generated by segmenting an image into vertically and horizontally symmetrical sub-bands in a subsequent dimension; and a synthesis bank configured to reconstruct a processed signal from the noise-filtered high-pass and low-pass signal components using corresponding high-pass and low-pass filter synthesis kernels, wherein the filter parameters defining the high-pass and low-pass filter decomposition kernels and the high-pass and low-pass filter synthesis kernels are generated with power complimentarity and perfect reconstruction restraints.