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sir,I have done the encoding process ,I want to decode the final image share.can you help me to decode the final image share into original image?

2 次查看（过去 30 天）
PLACEIUS NISHIGA G
关闭： MATLAB Answer Bot 2021-8-20
if true
clc;
clear all;
close all;
I=imread('Cameraman.tif');
[W,L]=size(I);
V=I(:)';
K=randi([0,1],1,192);
for x=1:2
a1=1;
for i=1:4
su=0;
for t=((48*i)-47):(48*i)
mull=(K(t)*2^(t-48*i+47));
su=su+mull;
end
A(i)= su/(2^48);
a1=a1*A(i);
end
rrr(x)=a1*2^48+A(x);
r(x)=mod((rrr(x)),0.4)+3.6;
cxxx(x)=a1*2^48+A(x+2);
c(x,1)=mod((cxxx(x)),1);
end
for x=1:2
for y=1:length(V)
if y==1
c(x,y)=c(x,1);
end
if (y~=1 && c(x,y-1)<0.5)
c(x,y)=0.5*r(x)*c(x,y-1);
end
if (y~=1 && c(x,y-1)>=0.5)
c(x,y)=0.5*r(x)*(1-c(x,y-1));
end
end
end
for y=1:65536
if y==1
E1(y)=V(y);
else
st=double(floor(c(1,y)*10^13));
fg=double(V(y));
gh=double(V(y-1));
du=st+fg+gh;
E1(y)=mod(du,256);
end
end
suy=0;
for y=1:length(V)
if y==length(V)
E2(y)=E1(y);
else
st1=double(floor(c(2,y)*10^13));
fg1=double(E1(y));
gh1=double(E1(y+1));
du1=st1+fg1+gh1;
E2(y)=mod(du1,256);
end
s=E2(y);
suy=suy+s;
end
nor_E2=decimalToBinaryVector(suy, 192, 'MSBFirst');
xo=xor(nor_E2,K);
ho=zeros(1,24);
kam=1;
for i=1:8:length(xo)
ho(kam)=bi2de(xo(i:i+7),'left-msb');
kam=kam+1;
end
E=[ho,E2];
k=3;
n=5;
size_of_m=(2*k-2);
for i=1:(2*k-2)
if i<=k-1
m1(i)=1;
else
m1(i)=0;
end
end
n11 = numel(m1);
k11 = sum(m1);
c = nchoosek(1:n11,k11);
[m,nu] = size(c);
out = zeros(m,n11);
mull=ones(1:nu);
out(sub2ind([m,n11],(1:m)'*mull(1:nu),c)) = 1;
s_Initial=out';
[ini_row,ini_col]=size(s_Initial);
I11=max(ceil(log2(n/(2*k-2))),0);
s_Ini1{1}=s_Initial;
if I11==0
s_exp=s_Initial;
else
for iter=1:I11
exp_row=ini_row*ini_row/2;
exp_col=ini_col*ini_col;
count=0;
ii=1;
jj=1;
for i=1:ini_col
for j=1:ini_row
if s_Ini1{iter}(j,i)==1
if (count==0)
s_exp(jj:jj+ini_row/2-1,ii:ii+ini_col-1)=s_Ini1{iter}(1:ini_row/2,:);
count=count+1;
else
s_exp(jj:jj+ini_row/2-1,ii:ii+ini_col-1)=s_Ini1{iter}(ini_row/2+1:ini_row,:);
count=0;
end
else
s_exp(jj:jj+ini_row/2-1,ii:ii+ini_col-1)=1;
end
jj=jj+ini_row/2;
end
jj=1;
ii=ii+ini_col;
end
[ini_row,ini_col]=size(s_exp);
s_Ini1{iter+1}=s_exp;
end
end
for i=1:length(s_Ini1)
[rr,cc]=size(s_Ini1{i});
for j=1:rr
[r,cu,vvv]=find(s_Ini1{i}(j,:));
onee1(i,j)=length(r);
end
end
s_share(1:n,:)=s_exp(1:n,:);
for roe=1:n
for i=1:length(s_share):length(E)
dfr{roe}(i:i+length(s_share)-1)=s_share(roe,:);
end
end
H=zeros(6,length(E));
for roe=1:n
for i=1:length(E)
if dfr{roe}(i)==1
H(roe,i)=E(i);
end
end
end
D(1)=floor(length(s_share)/256);
D(2)=mod(length(s_share),256);
size_of_B=ceil(length(s_share)/8);
if (mod(length(s_share),8)==0)
z=0;
else
z=8-(mod(length(s_share),8));
end
for i=1:n
s_cap(i,:)=[s_share(i,:),zeros(1,z)];
end
for i=1:n
for j=1:size_of_B
sumii=0;
for j1=8*j-7:8*j
sumii=sumii+(s_cap(i,j1)*2^(j1-8*j+7));
end
B{i}(j)=sumii;
end
end
for i=1:n
F{i}=[D B{i} H(i,:)];
end
for i=1:n
length_of_Fi=length(F{i});
x_of_size_of_Gi=W;
y_of_size_of_Gi=ceil(length_of_Fi/W);
conf=mod(length_of_Fi,W);
if (conf==0)
G{i}=F{i};
else
if (conf==0)
vg=0;
else
vg=W-(mod(length_of_Fi,W));
end
G{i}=[F{i},zeros(1,vg)];
end
end
for i=1:n
reshaped_G{i}=reshape(G{i},x_of_size_of_Gi,y_of_size_of_Gi);
end
final_encrypted_secured_share=reshaped_G;
end

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