Grey Scale -> RGB images from augmentedImageSource
2 views (last 30 days)
Show older comments
Hi, I would like to convert grey scale images to [227 227 3]. I'm able to adjust the size using "auimds = augmentedImageSource(imageSize, trainingImages); " but I'm having trouble with converting to RGB (for use with Alex Net).
I've tried:
%grayimg=repmat(grayimg, 1, 1, 3);
%auimds = cat(3, auimds, auimds, auimds);
%auimds(:,:,[1 1 1]);
%RGB = auimds(3, auimds, auimds, auimds);
and the grey2rgb() method
Any suggestions?
2 Comments
Aditya Patil
on 16 Nov 2020
Can you elaborate on the issue you are facing? Share any errors that were shown, and also share the output of the "version" command.
Answers (1)
Subhadeep Koley
on 16 Nov 2020
You can use the ColorPreprocessing Name-Value pair of augmentedImageSource to achieve what you want.
imageSize = [227 227 3];
auimds = augmentedImageSource(imageSize, trainingImages, 'ColorPreprocessing', 'gray2rgb'); % 'trainingImages' is your image datastore
Also if your using MATLAB R2018a or above, you might want to use augmentedImageDatastore instead of the augmentedImageSource due to the Compatibility Considerations.
imageSize = [227 227 3];
auimds = augmentedImageDatastore(imageSize, trainingImages, 'ColorPreprocessing', 'gray2rgb'); % 'trainingImages' is your image datastore
See Also
Categories
Find more on Modify Image Colors in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!