www.pudn.com > 666bandelets_toolbox.zip > evaluate_nbr_bits_wavelets.m

function nbr_bits = evaluate_nbr_bits_wavelets(MW, Jmin, T) 
 
% evaluate_nbr_bits_wavelets - evaluate the number of bits to code a wavelet transform 
% 
%   nbr_bits = evaluate_nbr_bits_wavelets(MW, Jmin, T); 
% 
%   MW is the wavelet transform, 
%   Jmin is the minimum scale of the transform, 
%   T is the quantification step, 
%   nbr_bit is a lower bound (Shanon entropy bound) on the number  
%       of bits needed to code the wavelet image. 
% 
%   Copyright (c) 2004 Gabriel Peyré 
 
if ndims(MW)==3 
    nbr_bits = 0; 
    for i=1:size(MW,3) 
        nbr_bits = nbr_bits + evaluate_nbr_bits_wavelets(MW(:,:,i), Jmin, T); 
    end 
    return; 
end 
 
 
 
% create the list of quadrant 
MW_list = convert_wavelets2list(MW, Jmin); 
 
nbr_bits = evaluate_nbr_bits(MW_list, T);