Add model/dataset card (README.md)

README.md

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+---
+license: other
+license_name: depth-cc-by-4.0-photos-mixed-per-source
+task_categories:
+- depth-estimation
+- image-to-image
+tags:
+- depth
+- pseudo-labels
+- monocular-depth
+- depth-anything-v2
+- high-resolution
+---
+
+# hires1920 Depth Backup
+
+Cold backup of **high-resolution (1920×1088) monocular depth pseudo-labels** with their
+source photographs — the high-res counterpart of the pipeline behind
+[`androidli/photo-depth-pseudo-labels`](https://huggingface.co/datasets/androidli/photo-depth-pseudo-labels).
+Published as-is so the exact arrays used in our experiments stay reproducible.
+
+Depth labels were produced with a **Depth-Anything-V2** teacher over public photo-library
+images (Wikimedia Commons / iNaturalist / Openverse / Pexels / Pixabay / Burst and
+other collections).
+
+## Layout
+
+| Path | Content |
+|---|---|
+| `hires1920/cold/` | 148 shards, ~145 GB — current generation (`shard_s0_*.npz`) |
+| `hires1920/oldpool/` | 61 shards, ~60 GB — older generation kept for lineage (`shard_old_s0_*.npz`) |
+| `quota_test.bin` | 1 MB LFS upload-test artifact — ignore |
+
+Each ~1 GB `.npz` shard is self-contained and holds ~512 samples as object arrays:
+
+| Array | Content |
+|---|---|
+| `id` | sample identifier |
+| `box` | bounding box / crop metadata |
+| `rgb_jpg` | the source photograph, JPEG bytes |
+| `gt_b2` | depth ground truth, **blosc2-compressed float16**, 1088×1920 |
+
+```python
+import io, blosc2, numpy as np
+from PIL import Image
+z = np.load("hires1920/cold/shard_s0_00030.npz", allow_pickle=True)
+raw = z["rgb_jpg"][0]                                  # JPEG bytes (object array)
+rgb = np.asarray(Image.open(io.BytesIO(bytes(raw))).convert("RGB"))
+gt = blosc2.decompress2(z["gt_b2"][0].tobytes())
+depth = np.frombuffer(gt, dtype=np.float16).reshape(1088, 1920)
+```
+
+## Depth semantics
+
+Depth-Anything raw convention: **larger value = farther, `0` = sky / invalid** (≈30% of
+pixels can be 0). Relative depth only — no metric scale, no intrinsics.
+
+## License — please read
+
+Split by component:
+
+- **Depth arrays (`gt_b2`)** — our own derived outputs → **CC BY 4.0**.
+- **Photographs (`rgb_jpg`)** — third-party images kept **as collected**, mixed licenses
+  per source; a large share was collected without a recorded license. **Do not assume
+  every photo is redistributable.** Per-sample provenance for the overlapping pipeline
+  is in `photo-depth-pseudo-labels/metadata/` (`index.csv`, `attribution.csv`);
+  treat this repo's photos as research-use until you check the source.
+
+**If you are a rights holder and want samples removed, open an issue and they will be
+deleted promptly.**
+
+## Limitations
+
+- `oldpool/` is a legacy generation: expect format/quality drift vs `cold/`.
+- `shard_s0_*` naming is an internal convention, not a stable contract; treat shard
+  indices as opaque.
+- No per-sample `license` column inside the shards — join against the photo-depth
+  metadata for licensing detail.