The influence of the phase of conjugate quadrature filters (CQFs) on the performances of a subband coding scheme is analyzed. When the filter length is short, the phase characteristic has virtually no influence on the peak signal-to-noise ratio (PSNR)/bit rate results and on the performance of postprocessing algorithms such as edge detection.
['Atilla Baskurt', 'Hugues Benoit-Cattin', 'Christophe Odet']
On the influence of the phase of conjugate quadrature filters in subband image coding