Hello, is it possible to pass in an in-memory collection of byte arrays representing a batch of images inside preprocessing

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instead of a File on disk? Or since

preprocessing()

can only be applied to 1 file usually then I guess we could say a ByeArray.

Unfortunately, no, it's hardcoded but could be easily fixed. So I suggest you create an issue and describe desired inputs for the preprocessing, highly likely that it could be fixed in the 0.4. Probably I need some help with the test data for this.

@zaleslaw FYI I created an issue https://github.com/JetBrains/KotlinDL/issues/321 And I created a draft PR https://github.com/JetBrains/KotlinDL/pull/320 I still need to figure out how to adapt

OnHeapDataset

and

OnFlyImageDataset

. Also, I can help with the tests as well, once we get a design down I can help writing unit tests and also test it in the real world.