Update README.md

README.md

@@ -1,20 +1,70 @@
----
-license: mit
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
-dataset_info:
-  features:
-  - name: image
-    dtype: image
-  - name: mask
-    dtype: image
-  splits:
-  - name: train
-    num_bytes: 293005530.85
-    num_examples: 5050
-  download_size: 281248808
-  dataset_size: 293005530.85
----
+---
+license: other
+pretty_name: CountHalluSet — RealHand
+task_categories:
+  - unconditional-image-generation
+  - image-segmentation
+size_categories:
+  - 1K<n<10K
+tags:
+  - diffusion
+  - counting
+  - hallucination
+  - hands
+---
+
+# CountHalluSet — RealHand
+
+Real-image dataset from **[Counting Hallucinations in Diffusion Models](https://arxiv.org/abs/2510.13080)**
+(arXiv:2510.13080). Part of **CountHalluSet**, a suite with well-defined counting
+criteria used to measure *counting hallucination*. Here the counting object is the
+**five fingers of a human hand** — a hand with the wrong number of fingers is a
+hallucination.
+
+## What's inside
+
+Photos of **single human hands**, each paired with a segmentation **mask** sharing
+the same file stem. The image + mask pairing enables joint image+mask diffusion
+(JDM). Images are used at 256×256 during training.
+
+```
+RealHand/
+├── images/   # hand photos
+└── masks/    # matching segmentation masks (same stem as the image)
+```
+
+There is no `labels.csv`: finger counts are not stored, they are measured at
+evaluation time by the RealHand counter
+([`CountHallu-counting_model-RealHand`](https://huggingface.co/ShyFoo/CountHallu-counting_model-RealHand)),
+gated by the quality classifier
+([`CountHallu-quality_cls_model-RealHand`](https://huggingface.co/ShyFoo/CountHallu-quality_cls_model-RealHand)).
+
+## Source & license
+
+<!-- TODO (required): state where the hand photos come from and under what terms
+     they may be redistributed. Set the `license:` field above accordingly and
+     replace `other`. If the images derive from an existing dataset, attribute it
+     and confirm the license permits re-hosting. Confirm no identifiable faces /
+     PII are present. -->
+
+## Usage
+
+```bash
+huggingface-cli download ShyFoo/CountHallu-dataset-RealHand \
+    --repo-type dataset --local-dir $DATASET_ROOT/RealHand
+```
+
+Load with the reference code (`counthallu.datasets.RealHand`). See the
+[CountHallu repository](<GITHUB_URL>) for the two-stage SD-1.5 JDM recipe and the
+full evaluation protocol.
+
+## Citation
+
+```bibtex
+@article{fu2025counting,
+  title={Counting Hallucinations in Diffusion Models},
+  author={Fu, Shuai and Zhou, Jian and Chen, Qi and Jing, Huang and Nguyen, Huy Anh and Liu, Xiaohan and Zeng, Zhixiong and Ma, Lin and Zhang, Quanshi and Wu, Qi},
+  journal={arXiv preprint arXiv:2510.13080},
+  year={2025}
+}
+```