How to make the label of an image inside an imageDatastore, the file name?

Instead of having each image in a seperate folder to get the label name, I want to saave the file name as the label name. or just label each 1->number of images?

How can I do this?

Thanks

Answer 1

[T.Nikhil kumar]

Hello Fergus,

As per my understanding you want to name each image in your ‘imageDatastore’ object with its file name without putting each image in a separate folder and setting the ‘LabelSource’ input argument as “foldernames”.

Assuming you have an image datastore ‘imds’ containing the image files, you can use the ‘split’ function to extract the file name from the full file path using a suitable delimiter. Then, you can assign the obtained file name as the label for each image.

The procedure for the task is as follows:

1. Take the full path of each image as the string to be split using the ‘split’ function.

2. Consider the “\” as delimiter and get the string split into a string array of smaller strings. We can choose the last string in that string array as file name and assign it as a label for the image Datastore using ‘Labels’ property. Refer to the following code for more understanding of the method:

%%Creating a cell array of each full file path split into smaller strings 
allStringArray=split(imdsTrain.Files,"\"); 

 
%% Choosing the last string of such split strings as file name of the image 
labelArray=allStringArray(:,end); 

 
%% Assigning the labelArray to the Labels property of the image Datastore 
imds.Labels=labelArray; 

You can refer to the following documentation to know about the usage of ‘split’ function

https://www.mathworks.com/help/matlab/ref/split.html

Hope this helps!