Add dataset card

README.md

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+---
+license: other
+license_name: source-dataset-terms
+license_link: https://github.com/NVlabs/ffhq-dataset
+pretty_name: Marcus Avatar Data
+size_categories:
+- 100K<n<1M
+tags:
+- face
+- relighting
+- 3dmm
+- uv-texture
+- webdataset
+configs:
+- config_name: ffhq1024_rendered
+  data_files: FFHQ1024/rendered/*.tar
+- config_name: ffhq1024_unwrap_texture
+  data_files: FFHQ1024/unwrap_texture/*.tar
+- config_name: celebamask_hq_rendered
+  data_files: CelebAMask-HQ/rendered/*.tar
+- config_name: celebamask_hq_unwrap_texture
+  data_files: CelebAMask-HQ/unwrap_texture/*.tar
+---
+
+# Marcus Avatar Data
+
+Relit renders and unwrapped UV textures derived from **FFHQ-1024** and
+**CelebAMask-HQ**. Everything is stored as uncompressed
+[WebDataset](https://github.com/webdataset/webdataset) tar shards; the sample key
+is the source dataset's image id (zero-padded for FFHQ, unpadded for CelebA).
+
+## Subsets
+
+| config | samples | shards | ids/shard | size |
+|---|---|---|---|---|
+| `ffhq1024_rendered` | 69,999 | 140 | 500 | ~755 GB |
+| `ffhq1024_unwrap_texture` | 69,999 | 35 | 2000 | ~194 GB |
+| `celebamask_hq_rendered` | 29,994 | 60 | 500 | ~330 GB |
+| `celebamask_hq_unwrap_texture` | 29,994 | 15 | 2000 | ~83 GB |
+
+Each `<subset>/shard_index.json` lists every shard with its first/last id, plus
+any sample whose file count deviates from the expected 11 (rendered) or 9
+(unwrap_texture).
+
+## Per-sample contents
+
+`rendered` — 3 HDRI lighting conditions plus one even-lit bake:
+
+| key | description |
+|---|---|
+| `.render_hdri_{0,1,2}.png` | relit render under HDRI *i* |
+| `.baked_hdri_{0,1,2}.png` | baked texture for HDRI *i* |
+| `.env_hdri_{0,1,2}.png` | environment map used for HDRI *i* |
+| `.baked_even.png` | baked texture under even illumination |
+| `.info.json` | render metadata |
+
+`unwrap_texture` — 3DMM fit and UV unwrap:
+
+| key | description |
+|---|---|
+| `.obj` / `.left_eye.obj` / `.right_eye.obj` | fitted meshes |
+| `.uv.png` | unwrapped UV texture |
+| `.coeffs.pt` | 3DMM coefficients |
+| `.lm68_2d.pt` | 68 2-D landmarks |
+| `.trans_params.pt` | crop/align transform |
+| `.mask.png`, `.seg_result.png` | face mask and segmentation |
+
+## Loading
+
+```python
+from datasets import load_dataset
+
+ds = load_dataset("luh0502/Marcus-avatar-data", "ffhq1024_rendered",
+                  split="train", streaming=True)
+sample = next(iter(ds))
+print(sample["__key__"], sample["render_hdri_0.png"].size)
+```
+
+Or with `webdataset` directly:
+
+```python
+import webdataset as wds
+url = ("pipe:curl -sL -H 'Authorization: Bearer $HF_TOKEN' "
+       "https://huggingface.co/datasets/luh0502/Marcus-avatar-data/resolve/main/"
+       "FFHQ1024/rendered/rendered-{000000..000139}.tar")
+ds = wds.WebDataset(url).decode("pil")
+```
+
+## Notes and known gaps
+
+- **FFHQ id `45650` is absent** from both subsets — the upstream 3DMM fit never
+  produced a texture for it, so nothing was rendered.
+- Four FFHQ renders are marked `failed` in the manifest (`00091`, `21931`,
+  `32511`, `52431`; the last three segfaulted). Their directories are included
+  as-is and may be incomplete — check `shard_index.json` anomalies before use.
+- `FFHQ1024/rendered/render_results.csv` is the merged per-id status manifest
+  (69,999 rows) reconciled from two render passes.
+
+## Licensing
+
+This repository contains **derived** data only, not the source images. FFHQ is
+distributed under CC BY-NC-SA 4.0 with individual photographs remaining under
+their respective Flickr licenses; CelebAMask-HQ is for non-commercial research
+use. Both sources' terms carry over — non-commercial research only.