How to know the size of imageDatastore?

Is there a function that returns the total number of images in an imageDatastore?

For example, if I load images from a directory and wanted to know the total number of images and index each image, how can I do that?

imds = imageDatastore(ipath, 'FileExtensions', {'.jpg', '.tif', '.png'}); 
i = 1;
while hasdata(imds)
    [img, imgInfo] = readImage(imds, i);
    fprintf('process %s \n', imgInfo.('Filename'));
    i = i+1;
end

The above code shows out of index error ( i exceeds number of files ).

and is this the fastest way to read images from a location?

Answer 1

[Srivardhan Gadila]

You can access the Files property of the imageDatastore & call the numel function on it.

imds = imageDatastore({'street1.jpg','street2.jpg','peppers.png','corn.tif'})
numImages = numel(imds.Files)