Hi Aseel, Glad to see you are using the lifting utilities in the Wavelet Toolbox, they're definitely powerful.
'typeDEC' takes the value 'w' or 'wp'. 'w' gives you a wavelet subband filtering, while 'wp' gives you a wavelet packet tree.
If you use X_InPlace, you can separate the coefficients as follows.
CA = X_InPlace(1:2:end,1:2:end)
CH = X_InPlace(2:2:end,1:2:end)
CV = X_InPlace(1:2:end,2:2:end)
CD = X_InPlace(2:2:end,2:2:end)
For example:
load woman;
X_InPlace = lwt2(X,'bior3.5',1,'typeDEC','w');
CA = X_InPlace(1:2:end,1:2:end);
CH = X_InPlace(2:2:end,1:2:end);
CV = X_InPlace(1:2:end,2:2:end);
CD = X_InPlace(2:2:end,2:2:end);
