Problem with shadow removal operation

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SHOBA MOHAN
SHOBA MOHAN on 28 Dec 2017
Commented: SHOBA MOHAN on 29 Dec 2017
I wrote matlab code for removing shadows but got the errorneous output. Can anyone please review my code and suggest the possible solutions. I am attaching the input output image and the reference paper is given in the link. <https://jivp-eurasipjournals.springeropen.com/articles/10.1186/s13640-017-0198-x >
function shadowremoval()
fontSize=14;
image=imread('inputimage.jpg');
image1=imread('foregroundimage.jpg');
image=imresize(image,[244 324]);
image1=imresize(image1,[244 324]);
% image=imresize(image,[406 646]);
% 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(double(Hx) - double(Hy)));
ds1=(abs(double(Sx) - double(Sy)));
dv1=(abs(double(Vx) - double(Vy)));
figure;
subplot(3, 3, 1);
imshow(image1, []);
title('Inputimage', 'FontSize', fontSize);
subplot(3, 3, 2);
imshow(image, []);
title('Referenceimage', 'FontSize', fontSize);
subplot(3, 3, 3);
imshow(dh, []);
title('dh', 'FontSize', fontSize);
subplot(3, 3, 4);
imshow(ds1, []);
title('ds1', 'FontSize', fontSize);
subplot(3, 3, 5);
imshow(dv1, []);
title('dv1', 'FontSize', fontSize);
de_shadow=cat(3,dh,ds1,dv1);
%
% 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'
sav=skewness(av(:));
shv=skewness(hv(:));
svv=skewness(vv(:));
sdv=skewness(dv(:));
%Compute the skewness value of 'swt of s'
sas=skewness(as(:));
shs=skewness(hs(:));
svs=skewness(vs(:));
sds=skewness(ds(:));
% %Perform the thresholding operation
b=(av>=sav);
c=(hv>=shv);
d=(vv>=svv);
e=(dv>=sdv);
%
f=(as>=sas);
g=(hs>=shs);
h=(vs>=svs);
i=(ds>=sds);
%
j=(b&f);
k=(c&g);
l=(d&h);
m=(e&i);
%Perform the inverse 'swt'operation
recv = iswt2(b,c,d,e,'haar');
recs= iswt2(j,k,l,m,'haar');
de_shadow1=cat(3,dh,recs,recv);
subplot(3, 3, 6);
imshow(de_shadow1, []);
title('deshadow1', 'FontSize', fontSize);
mask1=hsv2rgb(de_shadow1);
mask=rgb2gray(mask1);
mask=im2bw(mask);
subplot(3, 3, 7);
imshow(mask, []);
title('Grayoutput', 'FontSize', fontSize);
impixelinfo();
end
  4 Comments
Image Analyst
Image Analyst on 29 Dec 2017
If you expect us to extract the images out of the pdf then give us the code for doing that. Otherwise attach the jpg images like I originally wanted.
SHOBA MOHAN
SHOBA MOHAN on 29 Dec 2017
@ Image Analyst Kindly refer attached output in .jpg format.

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