How to apply a function on all images in ImageDatastore ?

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Ardalan Jalal
Ardalan Jalal 2021-2-5
评论： Ardalan Jalal 2021-2-7
I am using Imagedatastore function for classification problem but now I need to apply an function to all images in imageDatastore
YPred =classify(net,TestImages);

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Jeremy Hughes
Jeremy Hughes 2021-2-5
编辑：Jeremy Hughes 2021-2-5
I think this is what you want.
imds = imageDatastore(files,...)
tds = transform(imds,@(img)classify(net,img));
YPred = readall(tds);
Transform a datastore
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Jeremy Hughes
Jeremy Hughes 2021-2-7
You can do multiple transforms,
imds = imageDatastore(files,...);
tds = transform(imds,@(img) ~imbinarize(img));
tds = transform(tds,@(img) classify(net,img));
YPred = readall(tds);
Based on what you wrote, I want to make sure you understand that this:
@(imd) ~imbinarize(imd)
doesn't take in a datastore as an input, it takes the image data, one-by-one, and then calls imbinarize on each result.
It works as if you called
imds = imageDatastore(files);
while hasdata(imds)
img = read(imds); % read an image from the datastore
img = ~imbinarize(img);
Ypred(end+1) = classify(net,img);
end

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