MATLAB: How to fix an error in which the system could not read image from folder under loop, using “dir” function

Question

I have the following code:

files = dir('1folder/*.bmp');
for k =1:length(files)
    I = imread(files(k).name);
end

but I always got this error messege:

    Error using imread (line 349)
File "picture-0000.bmp" does not exist.

but my bmp file is exist, in the original folder and in the files structure built by the dir function.

I would like to know how to fix this error…

Answer 1

If you specify the directory for the dir call then you also need to specify it when you read the file:

D = '1folder';
S = dir(fullfile(D,'*.bmp'));
for k = 1:numel(S)
    I = imread(fullfile(D,S(k).name));
end