MATLAB: Input folders or files do not contain specified file extensions:

datadata importdeep learningdigital image processingimage acquisitionimage segmentationMATLAB

hy,
I have a doubt regarding loading '.nii' (NIFTI) files in my CNN architecture for segmentation (I am using segnet architecture). I have attached the snapshot of the error and my code. I want to load my .nii file dataset inside imds . please suggest me any option.
Untitled.png

Best Answer

Here if you do not define the ReadFcn explicitly, the default function used is imread() which is not supported for .nii extension.
Hence add ReadFcn as suggested by Walter Roberson.
pxds = pixelLabelDatastore(labelDir,classNames,labelIds,'FileExtensions','.nii','ReadFcn',sampleReadFcn); 
imds = imageDatastore(imageDir,'FileExtensions','.nii','ReadFcn',sampleReadFcn);
The custom ReadFcn looks something like the following
function data = sampleReadFcn(filename)
    data = niftiread(filename);
end
Refer here for more information on custom ReadFcn.
Refer niftiread for more info.
Related Question