Add 12 browser-viewable earthquake and volcano sample previews

README.md

@@ -65,6 +65,23 @@ HyP3 to recover available missing coverage. Missing observations remain missing.
 training/evaluation split. Multiple patches can belong to the same event and overlap;
 use event-aware, spatially and temporally appropriate splits for evaluation.
 
+<!-- EVENT-SAR-PREVIEWS -->
+## Browse samples online
+
+**[Open the 12-sample gallery](https://huggingface.co/datasets/GFM-Bench/Event-SAR/blob/main/previews/README.md)** — no dataset download or Python required. Includes both event types, all five stages, available orbits, and partial-coverage examples.
+
+These are downsampled display previews, not training arrays. Checkerboards indicate missing data. The gallery explains scales and sample selection.
+
+### Earthquake example · us60004yps
+
+![earthquake sample](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000205.jpg)
+
+### Volcano example · gvp_344090_22107
+
+![volcano sample](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000397.jpg)
+
+<!-- /EVENT-SAR-PREVIEWS -->
+
 ## Contents
 
 - One WebDataset sample per accepted spatial patch, with `<sample_key>.npz.bin` and

SHA256SUMS

@@ -1,4 +1,4 @@
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 702338fa86986f4f8af1b6ea3bb1455d9b6993a1b5824ad2188449ddefd24247  data/event-sar-train-000002.tar
@@ -97,6 +97,20 @@ c617e627c8e1afed60771017bee649c16a16d57a71fe34af185d23079277f7bb  data/event-sar
 66bc47e90c35bd8d160dc7c4bb362315586bb4a67bea0f526fdb4d1ccf4cc951  event_sar_dataset.py
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+e4e5a2869a30f44b0a693cced456ff9278e0ded7dffac5d8c9fd5bad5ff01e1c  previews/images/000000000269.jpg
+f94e26725880c9f9b663166043a5b4bd827bea1d993cf4f32b07bb433af09e22  previews/images/000000000303.jpg
+a796d8b8ba79b929d34cfb04c625d2a17368c4673ef8b554be184ebc56f7d60c  previews/images/000000000322.jpg
+b355746fefc94b5f9aeed07d3ef6d115ea5a2ef0b976f3d9a3e2b0d3d3e0cb87  previews/images/000000000339.jpg
+d96e2a307bd8a7190485455572f0fed27f5ace5fba86de682961334acc4e4ec5  previews/images/000000000368.jpg
+e540027758ee51e62e0b79a4ee9bb7dad3164c31b22ddf9a633cec0dddf3839c  previews/images/000000000373.jpg
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 23c03154c76f95934384bc20122de45d80e31db428dce3ed5cd1e00deb95b054  webdataset_summary.json

previews/README.md

@@ -0,0 +1,81 @@
+# Event-SAR sample gallery
+
+[Back to the dataset](https://huggingface.co/datasets/GFM-Bench/Event-SAR)
+
+Twelve display-only samples: six distinct earthquake events and six volcano events, selected at evenly spaced ranks in the shared-coverage distribution after keeping one patch per event. This is a coverage-stratified illustration, not a random or representative statistical sample.
+
+Each image shows all five acquisition-pair stages and all available orbits. Columns are stages; rows are reference VV, secondary VV, coherence, and wrapped phase. Checkerboards mark missing pixels. Shared coverage intersects VV, coherence and phase over every saved stage and orbit; panel labels are individual raster coverage.
+
+VV uses one shared 2nd–98th percentile linear stretch per patch. Coherence uses 0–1 (viridis); phase uses −π–π (cyclic twilight). Previews are downsampled with nearest-neighbor sampling and JPEG encoded for display; the released arrays remain lossless. VH, DEM, slope and incidence are included in the dataset but omitted from this gallery.
+
+## Earthquake — us60007ewc
+
+Patch `r6420:c9072:s1024` · sample `000000000209` · shared coverage **41.0376%**
+
+![earthquake us60007ewc five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000209.jpg)
+
+## Earthquake — us7000mstj
+
+Patch `r992:c1364:s1024` · sample `000000000303` · shared coverage **74.1281%**
+
+![earthquake us7000mstj five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000303.jpg)
+
+## Earthquake — us7000fes8
+
+Patch `r5984:c1648:s1024` · sample `000000000269` · shared coverage **97.1991%**
+
+![earthquake us7000fes8 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000269.jpg)
+
+## Earthquake — us10002n4w
+
+Patch `r8480:c4316:s1024` · sample `000000000010` · shared coverage **99.4624%**
+
+![earthquake us10002n4w five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000010.jpg)
+
+## Earthquake — us6000rjsu
+
+Patch `r6176:c8148:s1024` · sample `000000000250` · shared coverage **99.8420%**
+
+![earthquake us6000rjsu five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000250.jpg)
+
+## Earthquake — us60004yps
+
+Patch `r9808:c6648:s1024` · sample `000000000205` · shared coverage **100.0000%**
+
+![earthquake us60004yps five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000205.jpg)
+
+## Volcano — gvp_352050_22486
+
+Patch `event_center_s1024` · sample `000000000399` · shared coverage **92.7614%**
+
+![volcano gvp_352050_22486 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000399.jpg)
+
+## Volcano — gvp_263300_22513
+
+Patch `event_center_s1024` · sample `000000000339` · shared coverage **99.5011%**
+
+![volcano gvp_263300_22513 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000339.jpg)
+
+## Volcano — gvp_252120_22453
+
+Patch `event_center_s512` · sample `000000000322` · shared coverage **99.7997%**
+
+![volcano gvp_252120_22453 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000322.jpg)
+
+## Volcano — gvp_290240_22288
+
+Patch `event_center_s512` · sample `000000000373` · shared coverage **99.8825%**
+
+![volcano gvp_290240_22288 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000373.jpg)
+
+## Volcano — gvp_282090_22257
+
+Patch `event_center_s1024` · sample `000000000368` · shared coverage **99.9510%**
+
+![volcano gvp_282090_22257 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000368.jpg)
+
+## Volcano — gvp_344090_22107
+
+Patch `event_center_s512` · sample `000000000397` · shared coverage **100.0000%**
+
+![volcano gvp_344090_22107 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000397.jpg)

previews/samples.json

@@ -0,0 +1,168 @@
+[
+  {
+    "sample_key": "000000000209",
+    "event_type": "earthquake",
+    "event_id": "us60007ewc",
+    "patch_id": "r6420:c9072:s1024",
+    "shared_valid_ratio": 0.41037559509277344,
+    "shared_valid_dem_vh_ratio": 0.41037559509277344,
+    "shared_valid_all_ratio": 0.41037559509277344,
+    "image": "images/000000000209.jpg",
+    "orbits": [
+      "116",
+      "123"
+    ]
+  },
+  {
+    "sample_key": "000000000303",
+    "event_type": "earthquake",
+    "event_id": "us7000mstj",
+    "patch_id": "r992:c1364:s1024",
+    "shared_valid_ratio": 0.7412805557250977,
+    "shared_valid_dem_vh_ratio": 0.7412805557250977,
+    "shared_valid_all_ratio": 0.7412805557250977,
+    "image": "images/000000000303.jpg",
+    "orbits": [
+      "025"
+    ]
+  },
+  {
+    "sample_key": "000000000269",
+    "event_type": "earthquake",
+    "event_id": "us7000fes8",
+    "patch_id": "r5984:c1648:s1024",
+    "shared_valid_ratio": 0.9719905853271484,
+    "shared_valid_dem_vh_ratio": 0.9719905853271484,
+    "shared_valid_all_ratio": 0.9719905853271484,
+    "image": "images/000000000269.jpg",
+    "orbits": [
+      "029",
+      "036"
+    ]
+  },
+  {
+    "sample_key": "000000000010",
+    "event_type": "earthquake",
+    "event_id": "us10002n4w",
+    "patch_id": "r8480:c4316:s1024",
+    "shared_valid_ratio": 0.994624137878418,
+    "shared_valid_dem_vh_ratio": 0.0,
+    "shared_valid_all_ratio": 0.0,
+    "image": "images/000000000010.jpg",
+    "orbits": [
+      "056",
+      "136"
+    ]
+  },
+  {
+    "sample_key": "000000000250",
+    "event_type": "earthquake",
+    "event_id": "us6000rjsu",
+    "patch_id": "r6176:c8148:s1024",
+    "shared_valid_ratio": 0.9984197616577148,
+    "shared_valid_dem_vh_ratio": 0.9984197616577148,
+    "shared_valid_all_ratio": 0.9984197616577148,
+    "image": "images/000000000250.jpg",
+    "orbits": [
+      "131",
+      "138"
+    ]
+  },
+  {
+    "sample_key": "000000000205",
+    "event_type": "earthquake",
+    "event_id": "us60004yps",
+    "patch_id": "r9808:c6648:s1024",
+    "shared_valid_ratio": 1.0,
+    "shared_valid_dem_vh_ratio": 1.0,
+    "shared_valid_all_ratio": 1.0,
+    "image": "images/000000000205.jpg",
+    "orbits": [
+      "018",
+      "156"
+    ]
+  },
+  {
+    "sample_key": "000000000399",
+    "event_type": "volcano",
+    "event_id": "gvp_352050_22486",
+    "patch_id": "event_center_s1024",
+    "shared_valid_ratio": 0.9276142120361328,
+    "shared_valid_dem_vh_ratio": 0.9276142120361328,
+    "shared_valid_all_ratio": 0.9276142120361328,
+    "image": "images/000000000399.jpg",
+    "orbits": [
+      "120",
+      "142"
+    ]
+  },
+  {
+    "sample_key": "000000000339",
+    "event_type": "volcano",
+    "event_id": "gvp_263300_22513",
+    "patch_id": "event_center_s1024",
+    "shared_valid_ratio": 0.9950113296508789,
+    "shared_valid_dem_vh_ratio": 0.9950113296508789,
+    "shared_valid_all_ratio": 0.9950113296508789,
+    "image": "images/000000000339.jpg",
+    "orbits": [
+      "003",
+      "054"
+    ]
+  },
+  {
+    "sample_key": "000000000322",
+    "event_type": "volcano",
+    "event_id": "gvp_252120_22453",
+    "patch_id": "event_center_s512",
+    "shared_valid_ratio": 0.9979972839355469,
+    "shared_valid_dem_vh_ratio": 0.9979972839355469,
+    "shared_valid_all_ratio": 0.9979972839355469,
+    "image": "images/000000000322.jpg",
+    "orbits": [
+      "016",
+      "067"
+    ]
+  },
+  {
+    "sample_key": "000000000373",
+    "event_type": "volcano",
+    "event_id": "gvp_290240_22288",
+    "patch_id": "event_center_s512",
+    "shared_valid_ratio": 0.9988250732421875,
+    "shared_valid_dem_vh_ratio": 0.9988250732421875,
+    "shared_valid_all_ratio": 0.9988250732421875,
+    "image": "images/000000000373.jpg",
+    "orbits": [
+      "031",
+      "155"
+    ]
+  },
+  {
+    "sample_key": "000000000368",
+    "event_type": "volcano",
+    "event_id": "gvp_282090_22257",
+    "patch_id": "event_center_s1024",
+    "shared_valid_ratio": 0.9995098114013672,
+    "shared_valid_dem_vh_ratio": 0.9995098114013672,
+    "shared_valid_all_ratio": 0.9995098114013672,
+    "image": "images/000000000368.jpg",
+    "orbits": [
+      "156",
+      "163"
+    ]
+  },
+  {
+    "sample_key": "000000000397",
+    "event_type": "volcano",
+    "event_id": "gvp_344090_22107",
+    "patch_id": "event_center_s512",
+    "shared_valid_ratio": 1.0,
+    "shared_valid_dem_vh_ratio": 0.0,
+    "shared_valid_all_ratio": 0.0,
+    "image": "images/000000000397.jpg",
+    "orbits": [
+      "055"
+    ]
+  }
+]