Imagedatastore can not find files

Question

Marina Ghobrial 2021-7-24

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/885149-imagedatastore-can-not-find-files

评论： Image Analyst 2021-7-24

采纳的回答： Image Analyst

在 MATLAB Online 中打开

Hi,

I keep getting the following errors when I run this code.

"Error using imageDatastore (line 138)

Cannot find files or folders matching: 'photos\x'."

I was trying to use ANN to be able to tell different categories. However, for some reason matlab is not reading my images. I tried different methods such as dividing the code down to multiple imds such as

% imds1 = imageDatastore('C:\Users\OneDrive\Desktop\photos\x', 'FileExtensions',{'.HEIC'})
% imds2 = imageDatastore('C:\Users\OneDrive\Desktop\photos\y','FileExtensions',{'.HEIC'})
% imds3 = imageDatastore('C:\Users\OneDrive\Desktop\photos\z','FileExtensions',{'.HEIC'})
% imds4 = imageDatastore('C:\Users\OneDrive\Desktop\photos\a','FileExtensions',{'.HEIC'})
% imds5 = imageDatastore('C:\Users\OneDrive\Desktop\photos\b','FileExtensions',{'.HEIC'})

which was able to read the photos but was not able to determine which category it belonged to.

The code is:

categories = {'x','y','z','a','b'};
rootFolder = 'photos';
imds = imageDatastore (fullfile(rootFolder, categories), ...
     'LabelSource',"foldernames", 'IncludeSubfolders',true);

Please Help, Thank you in advance!

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Answer 1

Image Analyst 2021-7-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/885149-imagedatastore-can-not-find-files#answer_753129

编辑：Image Analyst 2021-7-24

在 MATLAB Online 中打开

Did you look at what the fullfile() returns? Let's pull it out separately and see

categories = {'x','y','z','a','b'};
rootFolder = 'photos';
filePattern = fullfile(rootFolder, categories)
imds = imageDatastore(filePattern, ...
	'LabelSource',"foldernames", 'IncludeSubfolders',true);