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- # **EgoHaFL: Egocentric 3D Hand Forecasting Dataset with Language Instruction**
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-
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- **EgoHaFL** is a dataset designed for **egocentric (first-person) 3D hand forecasting** with accompanying **natural language instructions**.
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- It contains short video clips, text descriptions, camera intrinsics, and detailed MANO-based 3D hand annotations.
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- The dataset is suitable for tasks such as **3D hand forecasting**, **hand pose estimation**, **hand–object interaction understanding**, and **video–language modeling**.
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-
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- ---
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-
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- ## 📦 **Dataset Contents**
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-
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- ### **1. Metadata CSV Files**
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-
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- * `EgoHaFL_train.csv`
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- * `EgoHaFL_test.csv`
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-
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- Each row corresponds to one sample and contains:
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-
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- | Field | Description |
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- | ---------------- | ------------------------------------------ |
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- | `uid` | Unique sample identifier |
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- | `video_id` | Source video identifier |
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- | `start_second` | Start time of the clip (seconds) |
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- | `end_second` | End time of the clip (seconds) |
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- | `caption` | Natural language instruction / description |
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- | `fx`, `fy` | Camera focal lengths |
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- | `cx`, `cy` | Principal point |
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- | `vid_w`, `vid_h` | Original video resolution |
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-
29
- ---
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-
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- ### **2. 3D Hand Annotations (EgoHaFL_lmdb)**
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-
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- The folder `EgoHaFL_lmdb` stores all 3D annotations in **LMDB format**.
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-
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- * **Key**: `uid`
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- * **Value**: a **list of length 16**, representing uniformly sampled frames across a **3-second video segment**.
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-
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- Each of the 16 elements is a dictionary containing:
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-
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- * `mano_params`
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-
42
- * `global_orient (n, 1, 3 ,3)`
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- * `hand_pose (n, 15, 3, 3)`
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- * `betas (n, 10)`
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- * `is_right (n,)`
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- * `keypoints_3d (n, 21, 3)`
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- * `keypoints_2d (n, 21, 2)`
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- * `vertices (n, 778, 3)`
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- * `box_center (n, 2)`
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- * `box_size (n,)`
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- * `camera_t (n, 3)`
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- * `focal_length (n, 2)`
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-
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- ---
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-
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- ## 🌳 **Annotation Structure (Tree View)**
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-
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- Below is the hierarchical structure for a single annotation entry (`uid 16-frame list per-frame dict`):
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-
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- ```
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- <uid>
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- └── list (length = 16)
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- ├── [0]
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- │ ├── mano_params
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- │ │ ├── global_orient
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- │ │ ├── hand_pose
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- │ │ └── betas
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- │ ├── is_right
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- │ ├── keypoints_3d
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- │ ├── keypoints_2d
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- │ ├── vertices
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- │ ├── box_center
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- │ ├── box_size
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- │ ├── camera_t
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- │ └── focal_length
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- ├── [1]
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- │ └── ...
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- ├── [2]
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- │ └── ...
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- └── ...
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- ```
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-
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- ---
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-
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- ## 🧩 **Example of Use**
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-
87
- For details on how to load and use the EgoHaFL dataset,
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- please refer to the **Dataloader** implementation in our GitHub repository:
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-
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- 🔗 **[https://github.com/ut-vision/SFHand](https://github.com/ut-vision/SFHand)**
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-
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-
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-
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- ---
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-
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- ## 🎥 Source of Video Data
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-
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- The video clips used in **EegoHaFL** originate from the **Ego4D V1** dataset.
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- For our experiments, we use the **original-length videos compressed to 224p resolution** to ensure efficient storage and training.
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-
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- Official Ego4D website:
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- 🔗 **[https://ego4d-data.org/](https://ego4d-data.org/)**
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-
104
- ---
105
-
106
- ## 🧠 **Supported Research Tasks**
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-
108
- * Egocentric 3D hand forecasting
109
- * Hand motion prediction and trajectory modeling
110
- * 3D hand pose estimation
111
- * Hand–object interaction understanding
112
- * Video–language multimodal modeling
113
- * Temporal reasoning with 3D human hands
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-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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+ i---
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+ dataset_name: EgoHaFL
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+ pretty_name: EgoHaFL: Egocentric 3D Hand Forecasting Dataset with Language Instruction
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+ tags:
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+ - egocentric
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+ - 3d-hand
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+ - forecasting
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+ - hand-pose
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+ - video
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+ - language
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+ license: mit
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+ language:
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+ - en
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+ size_categories:
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+ - 200K<n<300K
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+ task_categories:
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+ - vision
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+ - natural-language-processing
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+ - 3d
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+ task_ids:
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+ - 3d-hand-pose-estimation
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+ - video-forecasting
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+ - video-language
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+ ---
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+
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+ # **EgoHaFL: Egocentric 3D Hand Forecasting Dataset with Language Instruction**
27
+
28
+ **EgoHaFL** is a dataset designed for **egocentric (first-person) 3D hand forecasting** with accompanying **natural language instructions**.
29
+ It contains short video clips, text descriptions, camera intrinsics, and detailed MANO-based 3D hand annotations.
30
+ The dataset supports research in **3D hand forecasting**, **hand pose estimation**, **hand–object interaction understanding**, and **video–language modeling**.
31
+
32
+ ---
33
+
34
+ ## 📦 **Dataset Contents**
35
+
36
+ ### **1. Metadata CSV Files**
37
+
38
+ * `EgoHaFL_train.csv`
39
+ * `EgoHaFL_test.csv`
40
+
41
+ Each row corresponds to one sample and contains:
42
+
43
+ | Field | Description |
44
+ | ---------------- | ------------------------------------------ |
45
+ | `uid` | Unique sample identifier |
46
+ | `video_id` | Source video identifier |
47
+ | `start_second` | Start time of the clip (seconds) |
48
+ | `end_second` | End time of the clip (seconds) |
49
+ | `caption` | Natural language instruction / description |
50
+ | `fx`, `fy` | Camera focal lengths |
51
+ | `cx`, `cy` | Principal point |
52
+ | `vid_w`, `vid_h` | Original video resolution |
53
+
54
+ ---
55
+
56
+ ### **2. 3D Hand Annotations (EgoHaFL_lmdb)**
57
+
58
+ The folder `EgoHaFL_lmdb` stores all 3D annotations in **LMDB format**.
59
+
60
+ * **Key**: `uid`
61
+ * **Value**: a **list of length 16**, representing uniformly sampled frames across a **3-second video segment**.
62
+
63
+ Each of the 16 elements is a dictionary containing:
64
+
65
+ * `mano_params`
66
+
67
+ * `global_orient (n, 1, 3 ,3)`
68
+ * `hand_pose (n, 15, 3, 3)`
69
+ * `betas (n, 10)`
70
+ * `is_right (n,)`
71
+ * `keypoints_3d (n, 21, 3)`
72
+ * `keypoints_2d (n, 21, 2)`
73
+ * `vertices (n, 778, 3)`
74
+ * `box_center (n, 2)`
75
+ * `box_size (n,)`
76
+ * `camera_t (n, 3)`
77
+ * `focal_length (n, 2)`
78
+
79
+ ---
80
+
81
+ ## 🌳 **Annotation Structure (Tree View)**
82
+
83
+ Below is the hierarchical structure for a single annotation entry (`uid → 16-frame list → per-frame dict`):
84
+
85
+ ```
86
+ <uid>
87
+ └── list (length = 16)
88
+ ├── [0]
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+ │ ├── mano_params
90
+ │ │ ├── global_orient
91
+ │ │ ├── hand_pose
92
+ │ │ └── betas
93
+ │ ├── is_right
94
+ │ ├── keypoints_3d
95
+ │ ├── keypoints_2d
96
+ │ ├── vertices
97
+ │ ├── box_center
98
+ │ ├── box_size
99
+ │ ├── camera_t
100
+ │ └── focal_length
101
+ ├── [1]
102
+ │ └── ...
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+ ├── [2]
104
+ │ └── ...
105
+ └── ...
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+ ```
107
+
108
+ ---
109
+
110
+ ## 🎥 **Source of Video Data**
111
+
112
+ The video clips used in **EgoHaFL** originate from the **Ego4D V1** dataset.
113
+ For our experiments, we use the **original-length videos compressed to 224p resolution** to ensure efficient storage and training.
114
+
115
+ Official Ego4D website:
116
+ 🔗 **[https://ego4d-data.org/](https://ego4d-data.org/)**
117
+
118
+ ---
119
+
120
+ ## 🧩 **Example of Use**
121
+
122
+ For details on how to load and use the EgoHaFL dataset,
123
+ please refer to the **dataloader implementation** in our GitHub repository:
124
+
125
+ 🔗 **[https://github.com/ut-vision/SFHand](https://github.com/ut-vision/SFHand)**
126
+
127
+ ---
128
+
129
+ ## 🧠 **Supported Research Tasks**
130
+
131
+ * Egocentric 3D hand forecasting
132
+ * Hand motion prediction and trajectory modeling
133
+ * 3D hand pose estimation
134
+ * Hand–object interaction understanding
135
+ * Video–language multimodal modeling
136
+ * Temporal reasoning with 3D human hands
137
+