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Adam J. Stewart 2021-07-01 16:09:37 -05:00
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@ -54,15 +54,19 @@ Most of these will need to return a tuple of `(lat, long, width, height, proj, c
PyTorch data loaders have two parameters: `sampler` and `batch_sampler`. Most of the time, we only need to use a custom Sampler, and the default BatchSampler will work. We may need to use a custom BatchSampler when the batch axis is replaced by a time axis, for example.
### RandomChipSampler
### GeoSampler
Base class for the following samplers. Uses tuple instead of int for passing to `__getitem__` of `GeoDataset`. Not intended for `VisionDataset`.
### RandomGeoSampler
Randomly sample chips from the region of interest. Useful for training.
### GridChipSampler (SequentialSampler? CheckerboardChipSampler?)
### GridGeoSampler (SequentialGeoSampler? CheckerboardGeoSampler?)
Takes arguments like stride and chip size, and returns possibly overlapping chips. If stride > chip size, no overlap. Useful for prediction.
### ExistingChipSampler
### ExistingGeoSampler
What if chips are already defined in the dataset? In that case, we will want to use those and index normally.