Add egocentric hand samples

.gitattributes

@@ -7,6 +7,7 @@
 *.ftz filter=lfs diff=lfs merge=lfs -text
 *.gz filter=lfs diff=lfs merge=lfs -text
 *.h5 filter=lfs diff=lfs merge=lfs -text
+*.hdf5 filter=lfs diff=lfs merge=lfs -text
 *.joblib filter=lfs diff=lfs merge=lfs -text
 *.lfs.* filter=lfs diff=lfs merge=lfs -text
 *.lz4 filter=lfs diff=lfs merge=lfs -text

README.md

@@ -2,18 +2,30 @@
 
 This dataset comprises SMPL-H body motion sequences reconstructed from third-person videos, as well as MANO hand motion sequences derived from ego-centric videos.
 
-## Data-format
-
-- whole_body:
-  - "seq_name"/"file_name".npz
-    - pose_body: (T, 63)
+## Data-format
+
+- whole_body:
+  - "seq_name"/"file_name".npz
+    - pose_body: (T, 63)
     - betas: (B)
     - root_orient: (T, 3)
     - trans: (T, 3)
-    - "other parameters"
-
-## Usage
-
-- whole_body
-  - usage pip to install smplx, and use smplx.SMPLH to convert parameters into human mesh/joints
-  - The converted human body mesh uses the negative Y-axis as the gravity axis.
+    - "other parameters"
+
+- ego_hand:
+  - Sample ego-centric hand motion clips.
+  - Each sample has one `.hdf5` annotation file and one same-name `.mp4` source video.
+  - The `.hdf5` file contains camera intrinsics, camera transforms, hand/body transforms, and hand confidence values.
+  - Example pair:
+    - `ego_hand/95125_30577_34946.hdf5`
+    - `ego_hand/95125_30577_34946.mp4`
+
+## Usage
+
+- whole_body
+  - usage pip to install smplx, and use smplx.SMPLH to convert parameters into human mesh/joints
+  - The converted human body mesh uses the negative Y-axis as the gravity axis.
+
+- ego_hand
+  - Keep the same-name `.hdf5` and `.mp4` files in one directory.
+  - They can be visualized with the EgoDex 2D visualization script.

ego_hand/28141_29672_35035.hdf5

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+size 740480

ego_hand/28141_29672_35035.mp4

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+version https://git-lfs.github.com/spec/v1
+oid sha256:83b4bfdf977be2326d1d83b82bcab9d0eb636dc2d42187613804872f7583e83f
+size 5270040

ego_hand/94936_28836_32413.hdf5

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+size 510848

ego_hand/94936_28836_32413.mp4

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+size 3842734

ego_hand/95006_37513_43192.hdf5

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+size 789056

ego_hand/95006_37513_43192.mp4

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+size 5980937

ego_hand/95125_30577_34946.hdf5

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+size 612416

ego_hand/95125_30577_34946.mp4

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+size 4688792

ego_hand/95409_45610_50205.hdf5

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ego_hand/95409_45610_50205.mp4

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+oid sha256:5885be6e6d3356bbc4d5cf9c0dfd1bf15cbd907868d2e1eff48910d7deb00bea
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