Removing the shadow from image
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I have an image in which i have to remove the shadows from it ,please help how to process.I have uploaded the Image
回答（1 个）
Image Analyst
2012-7-13
0 个投票
Go to Section 8.3.10.1 here: http://iris.usc.edu/Vision-Notes/bibliography/contentssegment.html#2-D%20Region%20Segmentation%20Techniques,%20Snakes,%20Active%20Contours Pick an algorithm and code it up.
5 个评论
kash
2012-7-13
编辑：Oleg Komarov
2012-9-3
I tried using the code
I = imread('imagesh1.bmp');
J = im2double(I);
R = J(:,:,1);
G = J(:,:,2);
B = J(:,:,3);
[len,wid] = size(R);
% Generation of 2-D Log Chromaticity Image.
for i = 1:len
for j = 1:wid
if ((R(i,j)*G(i,j)*B(i,j))~= 0)
c1(i,j) = R(i,j)/((R(i,j)*G(i,j)*B(i,j))^(1/3));
c2(i,j) = G(i,j)/((R(i,j)*G(i,j)*B(i,j))^(1/3));
c3(i,j) = B(i,j)/((R(i,j)*G(i,j)*B(i,j))^(1/3));
else
c1(i,j) = 1;
c2(i,j) = 1;
c3(i,j) = 1;
end
end
end
rho1 = mat2gray(log(c1));
rho2 = mat2gray(log(c2));
rho3 = mat2gray(log(c3));
X1 = mat2gray(rho1*1/(sqrt(2)) - rho2*1/(sqrt(2))); %(1/sqrt(2); -1/sqrt(2); 0)
X2 = mat2gray(rho1*1/(sqrt(2)) + rho2*1/(sqrt(2)) - rho3*2/(sqrt(6))); %(1/sqrt(6); 1/sqrt(6); -2/sqrt(6))
theta = 10;
InvariantImage = cos(theta*pi/180)*X1 + sin(theta*pi/180)*X2;
imshow(InvariantImage)
but could not get the correct answer,i need the output as in the link
can u tell where had made mistake please
Image Analyst
2020-6-30
The attached algorithm looks pretty simple. Try it.
Keerthi D
2020-7-1
I didn't get
Image Analyst
2020-7-1
Maybe someone else you work with could understand it and explain it to you? Otherwise, pick a different shadow removal algorithm that you can understand.
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2020-7-1
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