How to select a folder at runtime?

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Jhilam Mukherjee
Jhilam Mukherjee 2015-9-2
评论： Image Analyst 2015-9-2
I have five folder. Each folder contains nearly 30 images. My programme is capable to read and execute all the images simultaneously from a specific folder by executing following code
srcFiles = dir('F:\Input_image\*.jpg');
for i = 1 : length(srcFiles)
filename = strcat('F:\Input_image\',srcFiles(i).name);
I{i} = imread(filename);
end
Each time when I execute all the folder I have to change the path, manually. Is it possible to change the path by executing the programme.

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Image Analyst
Image Analyst 2015-9-2
Try uigetdir().
  2 个评论
Jhilam Mukherjee
Jhilam Mukherjee 2015-9-2
Thanks. I can select the folder at runtime. I replace the filepath in dir() command but when for loop is executed it shows length(srcFiles) is zero. Is any additional command has to be added in programme.
Image Analyst
Image Analyst 2015-9-2
Try this:
% Have user browse for a file, from a specified "starting folder."
% For convenience in browsing, set a starting folder from which to browse.
startingFolder = 'C:\Program Files\MATLAB';
if ~exist(startingFolder, 'dir')
% If that folder doesn't exist, just start in the current folder.
startingFolder = pwd;
end
% Get the name of the folder that the user wants to use.
folder = uigetdir(startingFolder, 'Select a folder');
if folder == 0
% User clicked the Cancel button.
return;
end
filePattern = fullfile(folder, '*.jpg')
jpegFiles = dir(filePattern);
for k = 1:length(jpegFiles)
baseFileName = jpegFiles(k).name;
fullFileName = fullfile(folder, baseFileName);
fprintf(1, 'Now reading %s\n', fullFileName);
% Read in image and display it.
imageArray = imread(fullFileName);
imshow(imageArray); % Display image.
drawnow; % Force display to update immediately.
end
See the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

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