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Copy pathgroup_and_code.m
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group_and_code.m
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function [Seq_acy, dc_y, lbl_y, lbl_arr_y] = group_and_code(CY, Idx, Fname, flag)
[m,n] = size(CY);
blksz = zeros(m/8,n/8);
lbl_y = zeros(m/8,n/8);
k = 1;
i = 1;
Seq_acy = [];
lbl_arr_y = [];
p = 1;
while(all(all(lbl_y))==0)
l = 1;
j = 1;
while(j<=(n/8))
clear Seq;
r = min(find(lbl_y(:,j)==0));
if(isempty(r))
%r = 65;
%flag = 'rc';
j = j + 1;
continue;
%break;
end
i = r;
if(i<=((m/8)-3))&&(j<=((n/8)-3))&&(any(any(lbl_y(i:i+3,j:j+3)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))&&(Idx(i,j)==Idx(i+2,j))&&(Idx(i,j)==Idx(i,j+2))&&(Idx(i,j)==Idx(i+1,j+2))...
&&(Idx(i,j)==Idx(i+2,j+1))&&(Idx(i,j)==Idx(i+2,j+2))&&(Idx(i,j)==Idx(i+3,j))&&(Idx(i,j)==Idx(i+3,j+1))&&(Idx(i,j)==Idx(i+3,j+2))&&(Idx(i,j)==Idx(i,j+3))...
&&(Idx(i,j)==Idx(i+1,j+3))&&(Idx(i,j)==Idx(i+2,j+3))&&(Idx(i,j)==Idx(i+3,j+3))
blksz(k,l,1:2) = [32 32];
lbl_y(i:i+3,j:j+3) = 16;
lbl_arr_y(p) = 16;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 32;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 32;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 4;
elseif(i<=((m/8)-3))&&(j<=((n/8)-2))&&(any(any(lbl_y(i:i+3,j:j+2)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))&&(Idx(i,j)==Idx(i+2,j))&&(Idx(i,j)==Idx(i,j+2))&&(Idx(i,j)==Idx(i+1,j+2))...
&&(Idx(i,j)==Idx(i+2,j+1))&&(Idx(i,j)==Idx(i+2,j+2))&&(Idx(i,j)==Idx(i+3,j))&&(Idx(i,j)==Idx(i+3,j+1))&&(Idx(i,j)==Idx(i+3,j+2))
blksz(k,l,1:2) = [32 24];
lbl_y(i:i+3,j:j+2) = 15;
lbl_arr_y(p) = 15;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 32;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 24;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 3;
elseif(i<=((m/8)-2))&&(j<=((n/8)-3))&&(any(any(lbl_y(i:i+2,j:j+3)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))&&(Idx(i,j)==Idx(i+2,j))&&(Idx(i,j)==Idx(i,j+2))&&(Idx(i,j)==Idx(i+1,j+2))...
&&(Idx(i,j)==Idx(i+2,j+1))&&(Idx(i,j)==Idx(i+2,j+2))&&(Idx(i,j)==Idx(i,j+3))&&(Idx(i,j)==Idx(i+1,j+3))&&(Idx(i,j)==Idx(i+2,j+3))
blksz(k,l,1:2) = [24 32];
lbl_y(i:i+2,j:j+3) = 14;
lbl_arr_y(p) = 14;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 24;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 32;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 4;
elseif(i<=((m/8)-2))&&(j<=((n/8)-2))&&(any(any(lbl_y(i:i+2,j:j+2)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))&&(Idx(i,j)==Idx(i+2,j))&&(Idx(i,j)==Idx(i,j+2))&&(Idx(i,j)==Idx(i+1,j+2))...
&&(Idx(i,j)==Idx(i+2,j+1))&&(Idx(i,j)==Idx(i+2,j+2))
blksz(k,l,1:2) = [24 24];
lbl_y(i:i+2,j:j+2) = 13;
lbl_arr_y(p) = 13;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 24;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 24;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 3;
elseif(i<=((m/8)-3))&&(j<=((n/8)-1))&&(any(any(lbl_y(i:i+3,j:j+1)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))&&(Idx(i,j)==Idx(i+2,j))...
&&(Idx(i,j)==Idx(i+2,j+1))&&(Idx(i,j)==Idx(i+3,j))&&(Idx(i,j)==Idx(i+3,j+1))
blksz(k,l,1:2) = [32 16];
lbl_y(i:i+3,j:j+1) = 12;
lbl_arr_y(p) = 12;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 32;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 16;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 2;
elseif(i<=((m/8)-1))&&(j<=((n/8)-3))&&(any(any(lbl_y(i:i+1,j:j+3)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))...
&&(Idx(i,j)==Idx(i,j+2))&&(Idx(i,j)==Idx(i,j+3))&&(Idx(i,j)==Idx(i+1,j+2))&&(Idx(i,j)==Idx(i+1,j+3))
blksz(k,l,1:2) = [16 32];
lbl_y(i:i+1,j:j+3) = 11;
lbl_arr_y(p) = 11;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 16;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 32;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 4;
elseif(i<=((m/8)-2))&&(j<=((n/8)-1))&&(any(any(lbl_y(i:i+2,j:j+1)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))&&(Idx(i,j)==Idx(i+2,j))&&(Idx(i,j)==Idx(i+2,j+1))
blksz(k,l,1:2) = [24 16];
lbl_y(i:i+2,j:j+1) = 10;
lbl_arr_y(p) = 10;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 24;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 16;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 2;
elseif(i<=((m/8)-1))&&(j<=((n/8)-2))&&(any(any(lbl_y(i:i+1,j:j+2)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))&&(Idx(i,j)==Idx(i,j+2))&&(Idx(i,j)==Idx(i+1,j+2))
blksz(k,l,1:2) = [16 24];
lbl_y(i:i+1,j:j+2) = 9;
lbl_arr_y(p) = 9;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 16;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 24;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 3;
elseif(i<=((m/8)-3))&&(any(any(lbl_y(i:i+3,j)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i+2,j))&&(Idx(i,j)==Idx(i+3,j))
blksz(k,l,1:2) = [32 8];
lbl_y(i:i+3,j) = 8;
lbl_arr_y(p) = 8;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 32;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 8;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 1;
elseif(i<=((m/8)-1))&&(j<=((n/8)-1))&&(any(any(lbl_y(i:i+1,j:j+1)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i+1,j+1))
blksz(k,l,1:2) = [16 16];
lbl_y(i:i+1,j:j+1) = 7;
lbl_arr_y(p) = 7;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 16;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 16;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 2;
elseif(j<=((n/8)-3))&&(any(any(lbl_y(i,j:j+3)))==0)&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i,j+2))&&(Idx(i,j)==Idx(i,j+3))
blksz(k,l,1:2) = [8 32];
lbl_y(i,j:j+3) = 6;
lbl_arr_y(p) = 6;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 8;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 32;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 4;
elseif(i<=((m/8)-2))&&(any(any(lbl_y(i:i+2,j)))==0)&&(Idx(i,j)==Idx(i+1,j))&&(Idx(i,j)==Idx(i+2,j))
blksz(k,l,1:2) = [24 8];
lbl_y(i:i+2,j) = 5;
lbl_arr_y(p) = 5;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 24;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 8;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 1;
elseif(j<=((n/8)-2))&&(any(any(lbl_y(i,j:j+2)))==0)&&(Idx(i,j)==Idx(i,j+1))&&(Idx(i,j)==Idx(i,j+2))
blksz(k,l,1:2) = [8 24];
lbl_y(i,j:j+2) = 4;
lbl_arr_y(p) = 4;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 8;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 24;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 3;
elseif(i<=((m/8)-1))&&(any(any(lbl_y(i:i+1,j)))==0)&&(Idx(i,j)==Idx(i+1,j))
blksz(k,l,1:2) = [16 8];
lbl_y(i:i+1,j) = 3;
lbl_arr_y(p) = 3;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 16;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 8;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 1;
elseif(j<=((n/8)-1))&&(any(any(lbl_y(i,j:j+1)))==0)&&(Idx(i,j)==Idx(i,j+1))
blksz(k,l,1:2) = [8 16];
lbl_y(i,j:j+1) = 2;
lbl_arr_y(p) = 2;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 8;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 16;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 2;
else
blksz(k,l,1:2) = [8 8];
lbl_y(i,j) = 1;
lbl_arr_y(p) = 1;
a1 = 8*(i-1) + 1;
b1 = 8*(i-1) + 8;
a2 = 8*(j-1) + 1;
b2 = 8*(j-1) + 8;
blk = CY(a1:b1,a2:b2);
[Seq, dc] = Arithmetic_Coding_blk_csf_lab_lin_ksii(blk,Fname,flag);
j = j + 1;
end
Seq_acy = [Seq_acy Seq];
%Seq_acy{p} = Seq;
% Grouping the DC coefficients:-
dc_y(p) = dc;
p = p + 1;
l = l + 1;
end
%j = 1;
k = k + 1;
%fl = 1;
i = i + 1;
end
end