Upload README.md

README.md

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-license: cc-by-nc-nd-4.0
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+## Overall
+This is the dataset for [SeeU: Seeing the Unseen World via 4D Dynamics-aware Generation](https://yuyuanspace.com/SeeU/)
+
+## Dataset Structure
+
+- `SeeU45_train/`  
+  Provides the 2D frames used as model inputs during training.
+
+- `SeeU45_GT/`  
+  Contains the full scene ground-truth frame sequences.
+
+- `SeeU45_GT/sample_frame.txt`  
+  Specifies which frames are sampled for training. It also records:
+  - the original scene/video folder names,
+  - sampled frame indices,
+  - total frame counts (GT length),
+  - and frame numbers corresponding to `SeeU45_train` inputs.
+
+
+license: cc-by-nc-nd-4.0