how to solve subsrcipt indices problem in iswt operation
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SHOBA MOHAN
on 2 Jan 2018
Commented: SHOBA MOHAN
on 2 Jan 2018
I got the following error while computing inverse iswt operation.'Subscript indices must either be real positive integers or logicals.' I check the index by running 'whose variable' syntax and confirmed that the input index are logical. Please any one provide your valuable guidance.
image=imread('referenceframe.jpg');
image1=imread('currentframe.jpg');
image=imresize(image,[244 324]);
image1=imresize(image1,[244 324]);
% Do color conversion from rgb to hsv
x=rgb2hsv(image);
y=rgb2hsv(image1);
% Split the hsv component to h,s,v value
Hx = x(:,:,1);
Sx = x(:,:,2);
Vx = x(:,:,3);
Hy = y(:,:,1);
Sy = y(:,:,2);
Vy = y(:,:,3);
% Calculate a difference between this frame and the background.
dh=abs(Hx- Hy);
ds1=abs(Sx- Sy);
dv1=abs(Vx- Vy);
% Perform the 'swt'
[as,hs,vs,ds] = swt2(ds1,2,'haar');
[av,hv,vv,dv] = swt2(dv1,2,'haar');
%Compute the skewness value of 'swt of v'
sav1=skewness(av(:));
shv1=skewness(hv(:));
svv1=skewness(vv(:));
sdv1=skewness(dv(:));
%Perform the thresholding operation
for i = 1:244
for j = 1:324
b=(av(i,j)>=sav1);
c=(hv(i,j)>=shv1);
d=(vv(i,j)>=svv1);
e=(dv(i,j)>=sdv1);
recv = iswt2(b,c,d,e,'haar');
end
end
4 Comments
Accepted Answer
Walter Roberson
on 2 Jan 2018
In newer versions, the code instead complains that the first input was logical when real finite double values were expected.
3 Comments
Walter Roberson
on 2 Jan 2018
Edited: Walter Roberson
on 2 Jan 2018
refimage=imread('referenceframe.jpg');
curimage1=imread('currentframe.jpg');
refimage=imresize(refimage,[244 324]);
curimage1=imresize(curimage1,[244 324]);
% Do color conversion from rgb to hsv
x=rgb2hsv(refimage);
y=rgb2hsv(curimage1);
% Split the hsv component to h,s,v value
Hx = x(:,:,1);
Sx = x(:,:,2);
Vx = x(:,:,3);
Hy = y(:,:,1);
Sy = y(:,:,2);
Vy = y(:,:,3);
% Calculate a difference between this frame and the background.
dh=abs(Hx- Hy);
ds1=abs(Sx- Sy);
dv1=abs(Vx- Vy);
% Perform the 'swt'
[as,hs,vs,ds] = swt2(ds1,2,'haar');
[av,hv,vv,dv] = swt2(dv1,2,'haar');
%Compute the skewness value of 'swt of v'
sav1=skewness(av(:));
shv1=skewness(hv(:));
svv1=skewness(vv(:));
sdv1=skewness(dv(:));
%Perform the thresholding operation
b = 0 + (av >= sav1);
c = 0 + (hv >= shv1);
d = 0 + (vv >= svv1);
e = 0 + (dv >= sdv1);
recv = iswt2(b,c,d,e,'haar');
imagesc(recv)
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