Load picture from folder
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I have write a code to load some pictures from special folder, unfortunately just load last picture.
The picture name is initially started from B19111 to finish B191110, according to this "*B-1911-k*" numbering .
for a=1:10
b=num2str(a);
B{a}=imread(strcat('B1911',num2str(b),'.tif'));
end
My questions: 1. The reason of error. 2. Why the B{a} in workspace show the info of picture?
thanks
1 个评论
Romendra
2012-9-26
That is because B{} is a cell rather than a matrix. If you access the first part of the cell by B{1} it should show you the matrix associated with your image. As for the error what is the msg saying?
Thanks
回答（3 个）
Image Analyst
2012-9-26
编辑：Image Analyst
2012-9-28
See the examples from the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F. It does what you want to do. Here it is, slightly adapted for your situation:
% Read tiff files B19111.jpg through B191110.jpg.
folder = 'c:\whatever'; % Folder where your files live. Could be pwd if they are in the current folder.
for k = 1 : 10
imageFilename = sprintf('B1911%d.tif', k);
fullFileName = fullfile(folder, imageFilename);
if exist(fullFileName , 'file')
fprintf('Processing image %s\n', fullFileName);
imageArray{k} = imread(fullFileName);
else
fprintf('Image %s does not exist!\n', fullFileName);
end
end
Azzi Abdelmalek
2012-9-26
for a=1:10
out{a}=imread(sprintf('B1911%d.tif',a))
end
3 个评论
ibleteus
2012-9-28
Azzi Abdelmalek
2012-9-28
编辑：Azzi Abdelmalek
2012-9-28
clear out
for k=1:10
out{k}=imread(sprintf('B1911%d.tif',k))
figure
imshow(out{k})
end
Image Analyst
2012-9-28
You did something wrong. 'num2str(b)' should not be in quotes. But sprintf() is a better way than strcat() in my opinion. Have you looked at the FAQ? I adapted the code in there and posted it above for you in case you had difficulty doing that.
Walter Roberson
2012-9-26
Your code has
b = num2str(a);
and then in the next line uses num2str(b), thus trying to convert to string something that is already a string. The second line should use b instead of num2str(b)
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