I want function uppper (function's name in my code) should return p1 which is having 7 values. what changes are to made in the code below.

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function [p1]= uppper( X )
[x1,x2,x3,x4]=decomp_mat(X,'haar');x1=x1/2;
[xx1,xx2,xx3,xx4]=decomp_mat(x1,'haar');xx1=xx1/2;
[xxx1,xxx2,xxx3,xxx4]=decomp_mat(xx1,'haar');
x1=round(x1);
x2=round(x2);
x3=round(x3);
x4=round(x4);
xx1=round(xx1);
xx2=round(xx2);
xx3=round(xx3);
xx4=round(xx4);
xxx1=round(xxx1);
xxx2=round(xxx2);
xxx3=round(xxx3);
xxx4=round(xxx4);
seuil=max(max(xxx1))/2;
seuil=round(seuil);
map=gray(256);
mm=max(max(xxx1));
for i=1:7
s=seuil;q=s/2;
XXX1=raff(xxx1,s,q,mm);
XXX2=raff(xxx2,s,q,mm); XXX3=raff(xxx3,s,q,mm); XXX4=raff(xxx4,s,q,mm);
XX2=raff(xx2,s,q,mm); XX3=raff(xx3,s,q,mm); XX4=raff(xx4,s,q,mm);
X2=raff(x2,s,q,mm); X3=raff(x3,s,q,mm); X4=raff(x4,s,q,mm);
XX1=reconst_mat(XXX1,XXX2,XXX3,XXX4,'haar');XX1=XX1*2;
X1=reconst_mat(XX1,XX2,XX3,XX4,'haar');X1=X1*2;
Y=reconst_mat(X1,X2,X3,X4,'haar');
figure(i+8),image(Y),colormap(map);
pause(2);
[p1]=parametres(X,Y); ;
pp1(i)=p1 ; seuil=seuil/2;
end
save pp1
end
on each iteration( for i= 1 to 7) p1 will return PSNR values(7 values), coded in Parameters function
  2 个评论
Guillaume
Guillaume 2015-4-17
The first change to be made is to comment the code to explain what it's doing.
It won't help in getting p1 right, but it'll help in getting an answer.

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回答(1 个)

Geoff Hayes
Geoff Hayes 2015-4-19
Tina - if you want to return all 7 PSNR values, then just change your function signature to
function [pp1] = uppper( X )
so that the 7 element array is returned instead of the single element p1.

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