SSL4EO-S12: add new dataset/datamodule

docs/api/datamodules.rst

@@ -110,6 +110,11 @@ SpaceNet
 
 .. autoclass:: SpaceNet1DataModule
 
+SSL4EO
+^^^^^^
+
+.. autoclass:: SSL4EOS12DataModule
+
 Tropical Cyclone
 ^^^^^^^^^^^^^^^^
 

docs/api/datasets.rst

@@ -299,6 +299,11 @@ SpaceNet
 .. autoclass:: SpaceNet6
 .. autoclass:: SpaceNet7
 
+SSL4EO
+^^^^^^
+
+.. autoclass:: SSL4EOS12
+
 Tropical Cyclone
 ^^^^^^^^^^^^^^^^
 

docs/api/non_geo_datasets.csv

@@ -28,6 +28,7 @@ Dataset,Task,Source,# Samples,# Classes,Size (px),Resolution (m),Bands
 `SEN12MS`_,S,"Sentinel-1/2, MODIS","180,662",33,256x256,10,"SAR, MSI"
 `So2Sat`_,C,Sentinel-1/2,"400,673",17,32x32,10,"SAR, MSI"
 `SpaceNet`_,I,WorldView-2/3 Planet Lab Dove,"1,889--28,728",2,102--900,0.5--4,MSI
+`SSL4EO`_,T,Sentinel-1/2,1M,-,264x264,10,"SAR, MSI"
 `Tropical Cyclone`_,R,GOES 8--16,"108,110",-,256x256,4K--8K,MSI
 `UC Merced`_,C,USGS National Map,"21,000",21,256x256,0.3,RGB
 `USAVars`_,R,NAIP Aerial,100K,-,-,4,"RGB, NIR"

tests/conf/ssl4eo_s12_byol_1.yaml

@@ -0,0 +1,13 @@
+experiment:
+  task: "ssl4eo_s12"
+  module:
+    in_channels: 13
+    backbone: "resnet18"
+    learning_rate: 1e-3
+    learning_rate_schedule_patience: 6
+    weights: null
+  datamodule:
+    root: "tests/data/ssl4eo/s12"
+    seasons: 1
+    batch_size: 2
+    num_workers: 0

tests/conf/ssl4eo_s12_byol_2.yaml

@@ -0,0 +1,13 @@
+experiment:
+  task: "ssl4eo_s12"
+  module:
+    in_channels: 13
+    backbone: "resnet18"
+    learning_rate: 1e-3
+    learning_rate_schedule_patience: 6
+    weights: null
+  datamodule:
+    root: "tests/data/ssl4eo/s12"
+    seasons: 2
+    batch_size: 2
+    num_workers: 0

tests/data/ssl4eo/s12/data.py

@@ -0,0 +1,167 @@
+#!/usr/bin/env python3
+
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+import hashlib
+import os
+import shutil
+from typing import Dict, List, Union
+
+import numpy as np
+import rasterio
+from rasterio import Affine
+from rasterio.crs import CRS
+
+SIZE = 36
+
+np.random.seed(0)
+
+FILENAME_HIERARCHY = Union[Dict[str, "FILENAME_HIERARCHY"], List[str]]
+
+s1 = ["VH.tif", "VV.tif"]
+s2c = [
+    "B1.tif",
+    "B2.tif",
+    "B3.tif",
+    "B4.tif",
+    "B5.tif",
+    "B6.tif",
+    "B7.tif",
+    "B8.tif",
+    "B8A.tif",
+    "B9.tif",
+    "B10.tif",
+    "B11.tif",
+    "B12.tif",
+]
+s2a = s2c.copy()
+s2a.remove("B10.tif")
+filenames: FILENAME_HIERARCHY = {
+    "s1": {
+        "0000000": {
+            "S1A_IW_GRDH_1SDV_20200329T001515_20200329T001540_031883_03AE27_9BAF": s1,
+            "S1A_IW_GRDH_1SDV_20201230T001523_20201230T001548_035908_04349D_C91E": s1,
+            "S1B_IW_GRDH_1SDV_20200627T001449_20200627T001514_022212_02A27E_2A09": s1,
+            "S1B_IW_GRDH_1SDV_20200928T120105_20200928T120130_023575_02CCB0_F035": s1,
+        },
+        "0000001": {
+            "S1B_IW_GRDH_1SDV_20201101T091054_20201101T091119_024069_02DC0F_F189": s1,
+            "S1B_IW_GRDH_1SDV_20210205T091050_20210205T091115_025469_0308CB_AA25": s1,
+            "S1B_IW_GRDH_1SDV_20210430T091051_20210430T091116_026694_03303D_69B6": s1,
+            "S1B_IW_GRDH_1SDV_20210804T091057_20210804T091122_028094_0359FE_6D9D": s1,
+        },
+    },
+    "s2c": {
+        "0000000": {
+            "20200323T162931_20200323T163750_T15QXA": s2c,
+            "20200621T162901_20200621T164746_T15QXA": s2c,
+            "20200924T162929_20200924T164434_T15QXA": s2c,
+            "20201228T163711_20201228T164519_T15QXA": s2c,
+        },
+        "0000001": {
+            "20201104T135121_20201104T135117_T21KXT": s2c,
+            "20210123T135111_20210123T135113_T21KXT": s2c,
+            "20210508T135109_20210508T135519_T21KXT": s2c,
+            "20210811T135121_20210811T135115_T21KXT": s2c,
+        },
+    },
+    "s2a": {
+        "0000000": {
+            "20200323T162931_20200323T163750_T15QXA": s2a,
+            "20200621T162901_20200621T164746_T15QXA": s2a,
+            "20200924T162929_20200924T164434_T15QXA": s2a,
+            "20201228T163711_20201228T164519_T15QXA": s2a,
+        },
+        "0000001": {
+            "20201104T135121_20201104T135117_T21KXT": s2a,
+            "20210123T135111_20210123T135113_T21KXT": s2a,
+            "20210508T135109_20210508T135519_T21KXT": s2a,
+            "20210811T135121_20210811T135115_T21KXT": s2a,
+        },
+    },
+}
+
+
+def create_file(path: str) -> None:
+    profile = {
+        "driver": "GTiff",
+        "dtype": "uint16",
+        "width": SIZE,
+        "height": SIZE,
+        "count": 1,
+        "crs": CRS.from_epsg(4326),
+        "transform": Affine(
+            9.221577104649252e-05,
+            0.0,
+            -91.84569595740037,
+            0.0,
+            -8.79720059797404e-05,
+            18.588102959877993,
+        ),
+    }
+
+    if path.endswith("VH.tif") or path.endswith("VV.tif"):
+        profile["dtype"] = "float32"
+
+    if path.endswith("B1.tif") or path.endswith("B9.tif") or path.endswith("B10.tif"):
+        profile["width"] = profile["height"] = SIZE // 6
+        profile["transform"] = Affine(
+            0.0005532946262789551,
+            0.0,
+            -91.84592649682799,
+            0.0,
+            -0.0005278320358784425,
+            18.588322889892943,
+        )
+    elif (
+        path.endswith("B5.tif")
+        or path.endswith("B6.tif")
+        or path.endswith("B7.tif")
+        or path.endswith("B8A.tif")
+        or path.endswith("B11.tif")
+        or path.endswith("B12.tif")
+    ):
+        profile["width"] = profile["height"] = SIZE // 2
+        profile["transform"] = Affine(
+            0.00018443154209298504,
+            0.0,
+            -91.84574206528589,
+            0.0,
+            -0.0001759440119594808,
+            18.588146945880982,
+        )
+
+    Z = np.random.randn(SIZE, SIZE).astype(profile["dtype"])
+
+    with rasterio.open(path, "w", **profile) as src:
+        src.write(Z, 1)
+
+
+def create_directory(directory: str, hierarchy: FILENAME_HIERARCHY) -> None:
+    if isinstance(hierarchy, dict):
+        # Recursive case
+        for key, value in hierarchy.items():
+            path = os.path.join(directory, key)
+            os.makedirs(path, exist_ok=True)
+            create_directory(path, value)
+    else:
+        # Base case
+        for value in hierarchy:
+            path = os.path.join(directory, value)
+            create_file(path)
+
+
+if __name__ == "__main__":
+    create_directory(".", filenames)
+
+    files = ["s1", "s2_l1c", "s2_l2a"]
+    directories = ["s1", "s2c", "s2a"]
+    for file, directory in zip(files, directories):
+        # Create tarballs
+        shutil.make_archive(file, "gztar", ".", directory)
+
+        # Compute checksums
+        with open(f"{file}.tar.gz", "rb") as f:
+            md5 = hashlib.md5(f.read()).hexdigest()
+            print(file, md5)

tests/datasets/test_ssl4eo.py

@@ -0,0 +1,74 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+import os
+import shutil
+from pathlib import Path
+from typing import cast
+
+import matplotlib.pyplot as plt
+import pytest
+import torch
+import torch.nn as nn
+from _pytest.fixtures import SubRequest
+from _pytest.monkeypatch import MonkeyPatch
+from torch.utils.data import ConcatDataset
+
+from torchgeo.datasets import SSL4EOS12
+
+
+class TestSSL4EOS12:
+    @pytest.fixture(params=zip(SSL4EOS12.metadata.keys(), [1, 1, 2]))
+    def dataset(self, monkeypatch: MonkeyPatch, request: SubRequest) -> SSL4EOS12:
+        monkeypatch.setitem(
+            SSL4EOS12.metadata["s1"], "md5", "a716f353e4c2f0014f2e1f1ad848f82e"
+        )
+        monkeypatch.setitem(
+            SSL4EOS12.metadata["s2c"], "md5", "85eaf474af5642588a97dc5c991cfc15"
+        )
+        monkeypatch.setitem(
+            SSL4EOS12.metadata["s2a"], "md5", "df41a5d1ae6f840bc9a11ee254110369"
+        )
+
+        root = os.path.join("tests", "data", "ssl4eo", "s12")
+        split, seasons = request.param
+        transforms = nn.Identity()
+        return SSL4EOS12(root, split, seasons, transforms, checksum=True)
+
+    def test_getitem(self, dataset: SSL4EOS12) -> None:
+        x = dataset[0]
+        assert isinstance(x, dict)
+        assert isinstance(x["image"], torch.Tensor)
+        assert x["image"].size(0) == dataset.seasons * len(dataset.bands)
+
+    def test_len(self, dataset: SSL4EOS12) -> None:
+        assert len(dataset) == 251079
+
+    def test_add(self, dataset: SSL4EOS12) -> None:
+        ds = dataset + dataset
+        assert isinstance(ds, ConcatDataset)
+        assert len(ds) == 2 * 251079
+
+    def test_extract(self, tmp_path: Path) -> None:
+        for split in SSL4EOS12.metadata:
+            filename = cast(str, SSL4EOS12.metadata[split]["filename"])
+            shutil.copyfile(
+                os.path.join("tests", "data", "ssl4eo", "s12", filename),
+                tmp_path / filename,
+            )
+        SSL4EOS12(str(tmp_path))
+
+    def test_invalid_split(self) -> None:
+        with pytest.raises(AssertionError):
+            SSL4EOS12(split="foo")
+
+    def test_not_downloaded(self, tmp_path: Path) -> None:
+        with pytest.raises(RuntimeError, match="Dataset not found"):
+            SSL4EOS12(str(tmp_path))
+
+    def test_plot(self, dataset: SSL4EOS12) -> None:
+        sample = dataset[0]
+        dataset.plot(sample, suptitle="Test")
+        plt.close()
+        dataset.plot(sample, show_titles=False)
+        plt.close()

tests/trainers/test_byol.py

@@ -17,8 +17,12 @@
 from torchvision.models import resnet18
 from torchvision.models._api import WeightsEnum
 
-from torchgeo.datamodules import ChesapeakeCVPRDataModule, SeasonalContrastS2DataModule
-from torchgeo.datasets import SeasonalContrastS2
+from torchgeo.datamodules import (
+    ChesapeakeCVPRDataModule,
+    SeasonalContrastS2DataModule,
+    SSL4EOS12DataModule,
+)
+from torchgeo.datasets import SSL4EOS12, SeasonalContrastS2
 from torchgeo.models import get_model_weights, list_models
 from torchgeo.trainers import BYOLTask
 from torchgeo.trainers.byol import BYOL, SimCLRAugmentation
@@ -52,9 +56,11 @@ class TestBYOLTask:
     @pytest.mark.parametrize(
         "name,classname",
         [
-            ("chesapeake_cvpr_prior", ChesapeakeCVPRDataModule),
-            ("seco_1", SeasonalContrastS2DataModule),
-            ("seco_2", SeasonalContrastS2DataModule),
+            ("chesapeake_cvpr_prior_byol", ChesapeakeCVPRDataModule),
+            ("seco_byol_1", SeasonalContrastS2DataModule),
+            ("seco_byol_2", SeasonalContrastS2DataModule),
+            ("ssl4eo_s12_byol_1", SSL4EOS12DataModule),
+            ("ssl4eo_s12_byol_2", SSL4EOS12DataModule),
         ],
     )
     def test_trainer(
@@ -71,6 +77,9 @@ def test_trainer(
         if name.startswith("seco"):
             monkeypatch.setattr(SeasonalContrastS2, "__len__", lambda self: 2)
 
+        if name.startswith("ssl4eo_s12"):
+            monkeypatch.setattr(SSL4EOS12, "__len__", lambda self: 2)
+
         # Instantiate datamodule
         datamodule_kwargs = conf_dict["datamodule"]
         datamodule = classname(**datamodule_kwargs)

torchgeo/datamodules/__init__.py

@@ -25,6 +25,7 @@
 from .sen12ms import SEN12MSDataModule
 from .so2sat import So2SatDataModule
 from .spacenet import SpaceNet1DataModule
+from .ssl4eo import SSL4EOS12DataModule
 from .ucmerced import UCMercedDataModule
 from .usavars import USAVarsDataModule
 from .utils import MisconfigurationException
@@ -55,6 +56,7 @@
     "SEN12MSDataModule",
     "So2SatDataModule",
     "SpaceNet1DataModule",
+    "SSL4EOS12DataModule",
     "TropicalCycloneDataModule",
     "UCMercedDataModule",
     "USAVarsDataModule",