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

function plot_wavelet_quadtree(QT,Theta,j,q,M, plot_type) 
 
% plot_wavelet_quadtree - plot a quadtree at a given wavelet level. 
% 
%   plot_wavelet_quadtree(QT,Theta,j,q,M, plot_type); 
% 
%   M is a wavelet transformed image. 
%   QT and Theta are computed using the function  
%        [QT,Theta] = compute_wavelet_quadtree(M,Jmin,T,j_min,j_max,s); 
% 
%   Copyright (c) 2005 Gabriel Peyré 
 
if nargin<6 
    plot_type = 1; 
end 
if nargin<5 
    M = []; 
end 
 
if q==1 % 1st quadrant 
    selx = 1:2^j; sely = (2^j+1):2^(j+1); 
elseif q==2 
    selx = (2^j+1):2^(j+1); sely = 1:2^j; 
else 
    selx = (2^j+1):2^(j+1); sely = (2^j+1):2^(j+1); 
end 
 
plot_quadtree(QT(selx,sely),Theta(selx,sely), M(selx,sely), plot_type);