transforms: Switch to kornia AugmentationSequential (#2008)

tests/transforms/test_color.py

@@ -1,11 +1,12 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
 
+import kornia.augmentation as K
 import pytest
 import torch
 from torch import Tensor
 
-from torchgeo.transforms import AugmentationSequential, RandomGrayscale
+from torchgeo.transforms import RandomGrayscale
 
 
 @pytest.fixture
@@ -33,12 +34,15 @@ def batch() -> dict[str, Tensor]:
     ],
 )
 def test_random_grayscale_sample(weights: Tensor, sample: dict[str, Tensor]) -> None:
-    aug = AugmentationSequential(RandomGrayscale(weights, p=1), data_keys=['image'])
+    aug = K.AugmentationSequential(
+        RandomGrayscale(weights, p=1), keepdim=True, data_keys=None
+    )
+    # https://github.com/kornia/kornia/issues/2848
+    aug.keepdim = True
     output = aug(sample)
     assert output['image'].shape == sample['image'].shape
-    assert output['image'].sum() == sample['image'].sum()
     for i in range(1, 3):
-        assert torch.allclose(output['image'][0, 0], output['image'][0, i])
+        assert torch.allclose(output['image'][0], output['image'][i])
 
 
 @pytest.mark.parametrize(
@@ -50,9 +54,8 @@ def test_random_grayscale_sample(weights: Tensor, sample: dict[str, Tensor]) ->
     ],
 )
 def test_random_grayscale_batch(weights: Tensor, batch: dict[str, Tensor]) -> None:
-    aug = AugmentationSequential(RandomGrayscale(weights, p=1), data_keys=['image'])
+    aug = K.AugmentationSequential(RandomGrayscale(weights, p=1), data_keys=None)
     output = aug(batch)
     assert output['image'].shape == batch['image'].shape
-    assert output['image'].sum() == batch['image'].sum()
     for i in range(1, 3):
         assert torch.allclose(output['image'][0, 0], output['image'][0, i])

tests/transforms/test_indices.py

@@ -1,6 +1,7 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
 
+import kornia.augmentation as K
 import pytest
 import torch
 from torch import Tensor
@@ -20,7 +21,6 @@ from torchgeo.transforms import (
     AppendRBNDVI,
     AppendSWI,
     AppendTriBandNormalizedDifferenceIndex,
-    AugmentationSequential,
 )
 
 
@@ -42,9 +42,8 @@ def batch() -> dict[str, Tensor]:
 
 def test_append_index_sample(sample: dict[str, Tensor]) -> None:
     c, h, w = sample['image'].shape
-    aug = AugmentationSequential(
-        AppendNormalizedDifferenceIndex(index_a=0, index_b=1),
-        data_keys=['image', 'mask'],
+    aug = K.AugmentationSequential(
+        AppendNormalizedDifferenceIndex(index_a=0, index_b=1), data_keys=None
     )
     output = aug(sample)
     assert output['image'].shape == (1, c + 1, h, w)
@@ -52,9 +51,8 @@ def test_append_index_sample(sample: dict[str, Tensor]) -> None:
 
 def test_append_index_batch(batch: dict[str, Tensor]) -> None:
     b, c, h, w = batch['image'].shape
-    aug = AugmentationSequential(
-        AppendNormalizedDifferenceIndex(index_a=0, index_b=1),
-        data_keys=['image', 'mask'],
+    aug = K.AugmentationSequential(
+        AppendNormalizedDifferenceIndex(index_a=0, index_b=1), data_keys=None
     )
     output = aug(batch)
     assert output['image'].shape == (b, c + 1, h, w)
@@ -62,9 +60,9 @@ def test_append_index_batch(batch: dict[str, Tensor]) -> None:
 
 def test_append_triband_index_batch(batch: dict[str, Tensor]) -> None:
     b, c, h, w = batch['image'].shape
-    aug = AugmentationSequential(
+    aug = K.AugmentationSequential(
         AppendTriBandNormalizedDifferenceIndex(index_a=0, index_b=1, index_c=2),
-        data_keys=['image', 'mask'],
+        data_keys=None,
     )
     output = aug(batch)
     assert output['image'].shape == (b, c + 1, h, w)
@@ -88,7 +86,7 @@ def test_append_normalized_difference_indices(
     sample: dict[str, Tensor], index: AppendNormalizedDifferenceIndex
 ) -> None:
     c, h, w = sample['image'].shape
-    aug = AugmentationSequential(index(0, 1), data_keys=['image', 'mask'])
+    aug = K.AugmentationSequential(index(0, 1), data_keys=None)
     output = aug(sample)
     assert output['image'].shape == (1, c + 1, h, w)
 
@@ -98,6 +96,6 @@ def test_append_tri_band_normalized_difference_indices(
     sample: dict[str, Tensor], index: AppendTriBandNormalizedDifferenceIndex
 ) -> None:
     c, h, w = sample['image'].shape
-    aug = AugmentationSequential(index(0, 1, 2), data_keys=['image', 'mask'])
+    aug = K.AugmentationSequential(index(0, 1, 2), data_keys=None)
     output = aug(sample)
     assert output['image'].shape == (1, c + 1, h, w)