How can I save augmented images to file or folder ?

I would like to see, how images would be after apply image augmentation.

[jim peyton]

I have the same question. After careful review of the documentation on imageDataAugmenter, there is no clear way to access/view/save the perturbed images to visually confirm that transformations are being applied as intended.

And I agree that it would be useful to be able to save-out perturbed images.

[WEI LI HU]

I have the same problem,too. Any one has idea??

[Richa]

I too have the same problem.. If anyone could find an answer .. please reply

[Image Analyst]

It doesn't seem to be an option in the Computer Vision System Toolbox for R2018.

[Richa]

Ohk.. thanks

[Richa Dhiman]

I have same issue.. have you found some solution? please reply..

[Asha D L]

How can I save augmented images to file or folder ?

anyone please share your experience

Answer 1

[Image Analyst]

To see them, use imshow(). To write them to disk, use imwrite().

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

[noppakun boonsim]

sorry, for the question is not clear. Here is my code:

imds = imageDatastore({'street1.jpg','street2.jpg','peppers.png','corn.tif'})
imageAugmenter = imageDataAugmenter('RandRotation',[-180 180]);
imageSize = [28 28 1];
datasource = augmentedImageSource(imageSize,imds,'DataAugmentation',imageAugmenter);

I would like to see augmented images in datasource after apply augmentedImageSource(). Furthermore, I would like to know how many images that will generate from an original image after apply augmentedImageSource()?

Thank you.

[Image Analyst]

Sorry, I don't use imageDatastore() or augmentedImageSource(), so you'll just have to read the documentation or call tech support.

http://www.mathworks.com/matlabcentral/answers/13205#answer_18099

Answer 2

[Image Analyst]

From the help for augmentedImageSource():

Tips

• You can visualize many transformed images in the same figure by using the imtile function. For example, this code displays one mini-batch of transformed images from an augmented image datastore called auimds.minibatch = read(auimds);

imshow(imtile(minibatch.input))

• By default, resizing is the only image preprocessing operation performed on images. Enable additional preprocessing operations by using the DataAugmentation name-value pair argument with an imageDataAugmenter object. Each time images are read from the augmented image datastore, a different random combination of preprocessing operations are applied to each image.

[Asha D L]

imshow(imtile(minibatch.input))its working ...

what is the procdure for store the images? ...

[Image Analyst]

@Asha D L

out = imtile(I) returns a tiled image containing all the frames of the multiframe image array I. A multiframe image array can be a sequence of binary, grayscale, or truecolor images.

You can then use imwrite to save the out image to a file.