On the influence of the phase of conjugate quadrature filters in subband image coding
A. Baskurt, Hugues Benoit-Cattin, C. Odet · IEEE Transactions on Image Processing · 1998
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.