Yolov3 error while training in MATLAB 2020a

Hi,

I was trying to train with yolov3. I tried with the example code and dataset. it works perfectly.

Then I tried with my own dataset(with only one class). am getting following error.

Invalid transform function defined on datastore.

The cause of the error was:

Error using imresize

Expected input number 1, A, to be nonempty.

Error in imresize>parsePreMethodArgs (line 389)

validateattributes(A, {'single', ...

Error in imresize>parseInputs (line 273)

parsePreMethodArgs(varargin, method_arg_idx, first_param_string_idx);

Error in imresize (line 152)

params = parseInputs(args{:});

Error in preprocessData (line 14)

I = im2single(imresize(I,targetSize(1:2)));

Error in yolov3_train_2020a>@(data)preprocessData(data,networkInputSize) (line 57)

preprocessedTrainingData = transform(augmentedTrainingData, @(data)preprocessData(data, networkInputSize));

Error in matlab.io.datastore.TransformedDatastore/applyTransforms (line 489)

data = ds.Transforms{ii}(data);

Error in matlab.io.datastore.TransformedDatastore/read (line 162)

[data, info] = ds.applyTransforms(data, info);

Error in yolov3_train_2020a (line 126)

data = read(preprocessedTrainingData);

What could be the reason for the above error. I can assure that I have formatted the image datastore and box label datastore correctly, because I was able to train yolov2 with the same data.

[Madhav Thakker]

Hi Sanjeev,

Error using imresize

Expected input number 1, A, to be nonempty.

The error says that the input is empty. Can you confirm if the path of images are correct?