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thumbnail.m
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% for photo = 1:28
% name = strcat("eva\flower(64,2)",".png");
% origin = imread(name,"png");
% [M,N,C] = size(origin);
% blocksize = 64;
% m = M/blocksize;
% n = N/blocksize;
% values = 0;%store the original average pixel of every block
% sub = zeros(blocksize);
% result = origin;
% for channel = 1 : C
% for i = 1 : m
% for j = 1 : n
% x = (i-1)*blocksize+1;
% y = (j-1)*blocksize+1;
% sub(1:blocksize,1:blocksize) = origin(x:x+blocksize-1,y:y+blocksize-1,channel);
% values = mean2(sub);
% for p = x : x+blocksize-1
% for q = y : y+blocksize-1
% result(p,q,channel) = values;
% end
% end
% end
% end
% end
% res = strcat("eva/t-flower(64,2)",".png");
% imwrite(result,res,'png');
% end
blocksize = 8;
sum = double(0);
difference = double(0);
str = ['head\','bust\','body\'];
for subx = 2:2
a1 = 'origin\';
a1 = strcat(a1,str(subx*5+1:(subx+1)*5));
a2 = 'thumbnail\';
a2 = strcat(a2,str(subx*5+1:(subx+1)*5));
for mm =1:60
b=".png";
c=num2str(mm);
name=strcat(a1,c,b);
origin=imread(name,"png");
[M,N] = size(origin);
m = M/blocksize;
n = N/blocksize;
sub = zeros(blocksize);
result = origin;
for i = 1 : m
for j = 1 : n
x = (i-1)*blocksize+1;
y = (j-1)*blocksize+1;
sub(1:blocksize,1:blocksize) = origin(x:x+blocksize-1,y:y+blocksize-1);
values = mean2(sub);
for p = x : x+blocksize-1
for q = y : y+blocksize-1
result(p,q) = values;
end
end
end
end
b=".png";
c=num2str(mm);
res=strcat(a2,c,b);
imwrite(result,res,'png');
end
end
sum = double(0);
difference = double(0);
str = ['head\','bust\','body\'];
for subx = 2:2
a1 = 'result\';
a1 = strcat(a1,str(subx*5+1:(subx+1)*5));
a2 = 'result2\';
a2 = strcat(a2,str(subx*5+1:(subx+1)*5));
for mm =1:60
b=".png";
c=num2str(mm);
name=strcat(a1,c,b);
origin=imread(name,"png");
[M,N] = size(origin);
m = M/blocksize;
n = N/blocksize;
sub = zeros(blocksize);
result = origin;
for i = 1 : m
for j = 1 : n
x = (i-1)*blocksize+1;
y = (j-1)*blocksize+1;
sub(1:blocksize,1:blocksize) = origin(x:x+blocksize-1,y:y+blocksize-1);
values = mean2(sub);
for p = x : x+blocksize-1
for q = y : y+blocksize-1
result(p,q) = values;
end
end
end
end
b=".png";
c=num2str(mm);
res=strcat(a2,c,b);
imwrite(result,res,'png');
end
end
%
% sum = double(0);
% difference = double(0);
% str = ['head\','bust\','body\'];
% level = double(0);
% level2 = double(0);
% for subx = 2:2
% a1 = 'thumbnail\';
% a1 = strcat(a1,str(subx*5+1:(subx+1)*5));
% a2 = 'result2\';
% a2 = strcat(a2,str(subx*5+1:(subx+1)*5));
% for mm =1:60
% b=".png";
% c=num2str(mm);
% name=strcat(a1,c,b);
% x=imread(name,"png");
% name2=strcat(a2,c,b);
% y=imread(name2,"png");
% level = level + ssim(x,y);
% level2 = level2 + psnr(x,y);
% % [M,N] = size(x);
% % dif = double(0);
% % for i = 1:M
% % for j = 1:N
% % p = double(x(i,j));
% % q = double(y(i,j));
% % s = double(abs(p - q));
% % if( p == 0 )
% % % p = 1;
% % continue;
% % end
% % dif = dif + s/double(p);
% % end
% % end
% % dif = dif/double(M*N);
% % level = level + dif;
% end
% end
% level = level/60.0
% level2 = level2/60.0
% whole = imread("flower.png","png");
% [M,N,C] = size(whole);
% blocksize =16;
% MSB = 2;
% count = 20000;
% key = 1;
% m = M/blocksize;
% n = N/blocksize;
% values = zeros(m,n);%store the original average pixel of every block
% sub1 = zeros(blocksize);
% sub2 = zeros(blocksize);
% result1 = whole;
% for chanal = 1:C
% for i = 1 : m
% for j = 1 : n
% x = (i-1)*blocksize+1;
% y = (j-1)*blocksize+1;
% sub1(1:blocksize,1:blocksize) = whole(x:x+blocksize-1,y:y+blocksize-1,chanal);
% value1 = mean2(sub1);
% for p = x : x+blocksize-1
% for q = y : y+blocksize-1
% result1(p,q,chanal) = value1;
% end
% end
% end
% end
% end
% imwrite(result1,"thumbnail.png","png");
% % imwrite(result1,"ave.png","png");