HOW CAN I WRITE THE INVERSE FUNCTION OF PERIODIC PLUS SMOOTH DECOMPOSITION. I HAVE TAKEN A 360*360 MATRIX AND DIVIDED IT INTO 90 BLOCKS THEN PERFORMED DECOMPOSITION ON EACH
3 views (last 30 days)
Show older comments
function [p1,s] = perdm_fun(b)
[ny,nx] = size(b);
b = double(b);
X = 1:nx; Y = 1:ny;
v = zeros(ny,nx);
v(1,X) = b(1,X)-b(ny,X);
v(ny,X) = -v(1,X);
v(Y,1 ) = v(Y,1 )+b(Y,1)-b(Y,nx);
v(Y,nx) = v(Y,nx)-b(Y,1)+b(Y,nx);
fx = repmat(cos(2.*pi*(X -1)/nx),ny,1);
fy = repmat(cos(2.*pi*(Y'-1)/ny),1,nx);
fx(1,1)=0.; % avoid division by 0 in the line below
s = real(ifft2(fft2(v)*0.5./(2.-fx-fy)));
p = b-s;
%pmod = reshape(p.',1,[]);
%list=knuthShuffle(pmod);
%p1=reshape(list,4,4);
I want to perform inverse decomposition and get blocks as output...As i am a new comer in this field i can't find any way. hope to get help. I am getting b from this code:
mat=4*ones(1,90);
newRow = zeros(1,size(F3,2));
newF3 = [F3(1:359, :); newRow; F3(360:end, :)];
H=mat2cell(newF3,mat,mat);
%for i=1:90
%M=cellfun(@str2double, H);
%end
for i=1:90
for j=1:90
celmat=zeros(4);
b=(H{i,j});
% bmod = reshape(b.',1,[]);
% list=knuthShuffle(bmod);
% b1=reshape(list,4,4);
[p,s] = perdm_fun(b); end
end
0 Comments
Answers (0)
See Also
Categories
Find more on Denoising and Compression in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!