Shadow detection and removal based on HSV color model.

9 Ansichten (letzte 30 Tage)
Index exceeds matrix dimensions.
Error in Bpos (line 37) w= (cfv(i,j)/pv(i,j));
Code is here:
mov = VideoReader('C:/Users/research01/Desktop/Walking.avi');
p=imread('C:/Users/research01/Desktop/1234.png');
p=rgb2hsv(p);
ph=p(:,:,1);
ps=p(:,:,2);
pv=p(:,:,3);
alphaV=0.2;
betaV=0.8;
opFolder = fullfile('F:\imagelab', 'Bpos');
if ~exist(opFolder, 'dir')
mkdir(opFolder);
end
numFrames = mov.NumberOfFrames;
numFramesWritten = 0;
for t = 1 : numFrames
currFrame = read(mov, t);
currFrame=rgb2hsv(currFrame);
figure;imshow(currFrame);
cfh=currFrame(:,:,1);
figure;
imshow(cfh);
cfs=currFrame(:,:,2);
figure;imshow(cfs);
cfv=currFrame(:,:,3);
figure;imshow(cfv);
[m,n]=size(currFrame);
single=zeros(m,n);
for i=1:m
for j=1:n
% a=cfv(i,j);
% progIndication = sprintf('Wrote frame %d.',a);
% disp(progIndication);
w= (cfv(i,j)/pv(i,j));
progIndication = sprintf('Wrote frame %d.',w);
disp(progIndication);
sat=cfs(i,j)-ps(i,j);
progIndication = sprintf('sat frame %d.',w);
disp(progIndication);
hue=cfh(i,j)-ph(i,j);
progIndication = sprintf('hue frame %d.',w);
disp(progIndication);
if(w>=alphaV && w<=betaV && sat<=-0.3 && hue <=0.2)
single(i,j)=1;
else
single(i,j)=0;
end
end
end
imshow(single);
opBaseFileName = sprintf('%3.3d.png', t);
opFullFileName = fullfile(opFolder, opBaseFileName);
imwrite(single, opFullFileName, 'png');
end

Akzeptierte Antwort

Image Analyst
Image Analyst am 5 Dez. 2015
Evidently your still image does not have the same number of rows and columns as your video. You should really check for that before you begin processing. You want to write robust code don't you? Alert your users if that's the case with errordlg().
message = sprintf('Image rows = %d\nImage columns = %d\nVideo rows = %d\nVideo columns = %d',...
rows, columns, videoRows, videoColumns);
uiwait(errordlg(message));
return;
  2 Kommentare
Image Analyst
Image Analyst am 6 Dez. 2015
sanjay, learn how to use the debugger. Or else do it the hard way and put in lines like this:
fprintf('row i=%d, column j=%d\ncfv had %d rows, and %d columns.\npv has %d row and %d columns.\n', ...
i, j, size(cfv, 1), size(cfv, 2), size(pv, 1), size(pv, 2));
Karbala'a Unvi. Science
Karbala'a Unvi. Science am 6 Okt. 2020
dear Sir did that solve the problem to you or not?
I need the help too..

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Weitere Antworten (1)

Sanjay Saini
Sanjay Saini am 6 Dez. 2015
Dear Image Analyst, As per matlab workspace, i guess both still image and video data has same number of row and columns. As can see in the attached image. Thanks

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