A=imread('1.jpg');
B=imread('2.jpg');
C=imread('3.jpg');
D=imread('4.jpg');
F1=imread('5.jpg');
A_a = double(A)/255;
B_b = double(B)/255;
C_c= double(A)/255;
D_d = double(B)/255;
ori_A=A;
ori_B=B;
ori_C=C;
ori_D=D;
[p1,q1] = size(A);
[p2,q2] = size(B);
if(p1~=p2||q1~=q2)
error('The size of image A and image B must be the same......');
end
F1= fuse_lap(A_a,B_b,4,1,3);
M1=A_a;
M2=B_b;
zt=4;
ap=1;
mp=3;
%Y = fuse_lap(M1, M2, zt, ap, mp) image fusion with laplacian pyramid
%
% M1 - input image A
% M2 - input image B
% zt - maximum decomposition level
% ap - coefficient selection highpass (see selc.m)
% mp - coefficient selection base image (see selb.m)
%
% Y - fused image
% (Oliver Rockinger 16.08.99)
% check inputs
[z1 s1] = size(M1);
[z2 s2] = size(M2);
if (z1 ~= z2) | (s1 ~= s2)
error('Input images are not of same size');
end;
% define filter
w = [1 4 6 4 1] / 16;
% cells for selected images
E = cell(1,zt);
% loop over decomposition depth -> analysis
for i1 = 1:zt
% calculate and store actual image size
[z s] = size(M1);
zl(i1) = z; sl(i1) = s;
% check if image expansion necessary
if (floor(z/2) ~= z/2), ew(1) = 1; else, ew(1) = 0; end;
if (floor(s/2) ~= s/2), ew(2) = 1; else, ew(2) = 0; end;
% perform expansion if necessary
if (any(ew))
M1 = adb(M1,ew);
M2 = adb(M2,ew);
end;
% perform filtering
G1 = conv2(conv2(es2(M1,2), w, 'valid'),w', 'valid');
G2 = conv2(conv2(es2(M2,2), w, 'valid'),w', 'valid');
% decimate, undecimate and interpolate
M1T = conv2(conv2(es2(undec2(dec2(G1)), 2), 2*w, 'valid'),2*w', 'valid');
M2T = conv2(conv2(es2(undec2(dec2(G2)), 2), 2*w, 'valid'),2*w', 'valid');
% select coefficients and store them
E(i1) = {selc(M1-M1T, M2-M2T, ap)};
% decimate
M1 = dec2(G1);
M2 = dec2(G2);
end;
% select base coefficients of last decompostion stage
M1 = selb(M1,M2,mp);
% loop over decomposition depth -> synthesis
for i1 = zt:-1:1
% undecimate and interpolate
M1T = conv2(conv2(es2(undec2(M1), 2), 2*w, 'valid'), 2*w', 'valid');
% add coefficients
M1 = M1T + E{i1};
% select valid image region
M1 = M1(1:zl(i1),1:sl(i1));
end;
% copy image
Y = M1;