Pipelined embedded processor of quaternionic m-band wavelets for image multiresolution analysis

Multiresolution analysis of image data based on the novel m-channel linear-phase paraunitary filter banks (LP PUFBs) using quaternion multipliers are presented, which are aimed at finite-precision implementation. In the given paper the universal quaternion multiplier as a kernel of m-band wavelets analysis on combining the CORDIC algorithm with a lifting scheme is considered. Finally, the FPGA-based eight-channel linear phase paraunitary filter bank is validated by its application to image, in particular, to lossless-to-lossy coding.