Hello,
I understand that you want to do data augmentation in MATLAB, and for that you need to adjust the brightness in ‘augmentedImageDatastore.’
The ‘augmentedImageDatastore’ uses the ‘imageDataAugmentor’ object where you can add augmentation directly like resizing, rotation, reflection. But it does not allow you to add brightness, contrast, hue, saturation etc. Please look at this documentation to learn more about these 2 functions,
To adjust the brightness and do more complicated data augmentations you need to create your own augmentation function. Please look at this example once.
If you look at the following example in the data augmentation section, they have created a custom data augmenter function and then used transform function on the Datastore to use fly-by data augmentation. This means when the training happens the training data (to which the transform function is applied) uses the data augmentation function to the datastore images without storing them.
Please go through the following documentation to learn more regarding transform function,
Also in their custom data augmenter function they have used the function ‘jitterColorHSV’ to change brightness and other image properties. Look at the below documenation to learn more,
Hope this helps.
