Add tfds:uc_merced and tfds:eurosat download (#914)

- Ticket no. 107273
- Add tfds:uc_merced and tfds:eurosat download
- These datasets will be used for the merge tutorial

Signed-off-by: Kim, Vinnam <vinnam.kim@intel.com>

CHANGELOG.md

@@ -15,6 +15,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   (<https://github.com/openvinotoolkit/datumaro/pull/909>)
 - Refactor CLI commands w/ and w/o project
   (<https://github.com/openvinotoolkit/datumaro/pull/910>)
+- Add tfds:uc_merced and tfds:eurosat download
+  (<https://github.com/openvinotoolkit/datumaro/pull/914>)
 
 ### Bug fixes
 - Add UserWarning if an invalid media_type comes to image statistics computation

datumaro/components/extractor_tfds.py

@@ -1,4 +1,4 @@
-# Copyright (C) 2021-2022 Intel Corporation
+# Copyright (C) 2021-2023 Intel Corporation
 #
 # SPDX-License-Identifier: MIT
 
@@ -313,6 +313,31 @@ def __call__(self, tfds_example: Any) -> str:
     ),
 )
 
+_EUROSAT_ADAPTER = _TfdsAdapter(
+    category_transformers=[_SetLabelCategoriesFromClassLabelFeature("label")],
+    data_transformers=[
+        _SetImageFromImageFeature("image"),
+        _AddLabelFromClassLabelFeature("label"),
+    ],
+    id_generator=_GenerateIdFromFilenameFeature("filename"),
+    metadata=TfdsDatasetMetadata(
+        human_name="EuroSAT", default_output_format="imagenet_txt", media_type=Image
+    ),
+)
+
+
+_UC_MERCED_ADAPTER = _TfdsAdapter(
+    category_transformers=[_SetLabelCategoriesFromClassLabelFeature("label")],
+    data_transformers=[
+        _SetImageFromImageFeature("image"),
+        _AddLabelFromClassLabelFeature("label"),
+    ],
+    id_generator=_GenerateIdFromFilenameFeature("filename"),
+    metadata=TfdsDatasetMetadata(
+        human_name="UCMerced", default_output_format="imagenet_txt", media_type=Image
+    ),
+)
+
 
 def _voc_save_pose_names(
     tfds_builder: tfds.core.DatasetBuilder,
@@ -369,6 +394,8 @@ def _evolve_adapter_meta(adapter: _TfdsAdapter, **kwargs):
     "imagenet_v2": _evolve_adapter_meta(_IMAGENET_ADAPTER, human_name="ImageNetV2"),
     "mnist": _MNIST_ADAPTER,
     "voc/2012": _evolve_adapter_meta(_VOC_ADAPTER, human_name="PASCAL VOC 2012"),
+    "eurosat": _evolve_adapter_meta(_EUROSAT_ADAPTER, human_name="EuroSAT"),
+    "uc_merced": _evolve_adapter_meta(_UC_MERCED_ADAPTER, human_name="UCMerced"),
 }
 
 # Assign the TFDS catalog page as the documentation URL for all datasets.