Orientation selective subband decomposition and stack-run coding
M.A. Mello, Roberto H. Bamberger, T.R. Fischer · 2002
We compare using traditional separable filter banks with a simple non-separable filter bank with orientation selectivity, for image compression. The image is decomposed into 19 subbands (6-level) using a separable octave-band decomposition. The high-frequency subband at each decomposition level is split into two bands with an orientation selective filter bank. The image data is then coded using stack-run coding. Results based on subjective testing showed an improvement in the oriented data of the reconstructed images.