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Error using trainNetwork (line 165) Invalid training data. ImageDatastore not supported for regression problems.

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Surendra Maharjan
Surendra Maharjan on 26 May 2019
Commented: Edward Peake on 30 Oct 2019
I am trying to use dnCNNLayers. I am getting this error. I used text image [256x256], so I changed the size of dnCNNLayers. But, the problem is still there. Anyone please help me.

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Answers (1)

Naoya
Naoya on 29 May 2019
The ImageDatastore currently does not support for CNN regression problems.
Please give the input data via table data for specifying image files as follows.
% Define the image files as cell arrays
filename = {'C:\****\img\img1.png';
'C:\****\img\img2.png';
'C:\****\img\img3.png';
'C:\****\img\img4.png'};
% Define the target values
value = [0.1;0.7;0.3;0.5];
% Create a table data
tbl = table(filename, value);
% Data Augmentation
imageAugmenter = imageDataAugmenter( ...
'RandRotation',[-20,20], ...
'RandXTranslation',[-3 3], ...
'RandYTranslation',[-3 3])
augimds = augmentedImageDatastore([128,128, 3],tbl,'DataAugmentation',imageAugmenter);
% Train network for CNN regression problem
net = trainNetwork(augimds, layers, options)

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Edward Peake
Edward Peake on 30 Oct 2019
Hi, This only seems to work for png or jpeg images. I would like to Read NIfTI image into an ImageDatastore for training a regression CNN. Thanks.

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