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@@ -1026,3 +1026,5 @@ data/flattening/flattening_dataset.z96 filter=lfs diff=lfs merge=lfs -text
 data/flattening/flattening_dataset.z97 filter=lfs diff=lfs merge=lfs -text
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+data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00068/volume/nocs_winding_number_field/128/0.0.0 filter=lfs diff=lfs merge=lfs -text
+data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00074/volume/nocs_winding_number_field/128/0.0.0 filter=lfs diff=lfs merge=lfs -text

data/data_examples/README.md

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+# Samples of VR-Folding dataset
+## Data structure
+We provide 1 video sequence for *Folding* task.
+### RGB images
+The following diretory contains RGB images of the video sequence rendered with Unity. Note that these images are only for visualization, so we have rendered both hands additionally.
+- `Tshirt_folding_hands_rgb`
+### Processed Data: Zarr data
+All the multi-view RGB-D images will be transformed into point clouds and merged together into [zarr](https://zarr.readthedocs.io/en/stable/) format. All the other annotations are also contained in the data with [zarr](https://zarr.readthedocs.io/en/stable/) format. The following diretory contain samples for *Folding* task in [zarr](https://zarr.readthedocs.io/en/stable/) format.
+- `VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt`
+
+Here is the detailed tree structure of a data example of one frame.
+```
+00068_Tshirt_000000_000000
+ ├── grip_vertex_id
+ │   ├── left_grip_vertex_id (1,) int32
+ │   └── right_grip_vertex_id (1,) int32
+ ├── hand_pose
+ │   ├── left_hand_euler (25, 3) float32
+ │   ├── left_hand_pos (25, 3) float32
+ │   ├── right_hand_euler (25, 3) float32
+ │   └── right_hand_pos (25, 3) float32
+ ├── marching_cube_mesh
+ │   ├── is_vertex_on_surface (6410,) bool
+ │   ├── marching_cube_faces (12816, 3) int32
+ │   └── marching_cube_verts (6410, 3) float32
+ ├── mesh
+ │   ├── cloth_faces_tri (8312, 3) int32
+ │   ├── cloth_nocs_verts (4434, 3) float32
+ │   └── cloth_verts (4434, 3) float32
+ └── point_cloud
+     ├── cls (30000,) uint8
+     ├── nocs (30000, 3) float16
+     ├── point (30000, 3) float16
+     ├── rgb (30000, 3) uint8
+     └── sizes (4,) int64
+```
+## Visualization
+We provide a simple script for visualizing data in [zarr](https://zarr.readthedocs.io/en/stable/) format. This script will filter out the static frames (i.e. garment pose remains unchanged) in the video and only visualize dynamic frames.
+### Setup
+Requirements: Python >= 3.8
+
+This code has been tested on Windows 10 and Ubuntu 18.04.
+```
+pip install -r requirements.txt
+```
+### Run
+```
+python vis_samples.py
+```
+This script will use Open3D to visualize the following elements:
+- the input partial point cloud with colors
+- the grasping points of both hands (represented by blue and red spheres)
+- the complete GT mesh colored with NOCS coordinates
+
+Note that our recorded data in Zarr format contains complete hand poses (positions and euler angles of 25 bones for each hand).
+
+In this simplified 3D visualization script, we only visualize the valid grasping points on the garment surface instead of complete hands for fast implementation.

data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/.zgroup

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+{
+    "zarr_format": 2
+}

data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/.zgroup

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+{
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+}

data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00068/.zgroup

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data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00068/volume/.zgroup

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data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00068/volume/nocs_winding_number_field/.zgroup

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data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00068/volume/nocs_winding_number_field/128/.zarray

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+}

data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00068/volume/nocs_winding_number_field/128/0.0.0

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data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00074/.zgroup

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data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00074/volume/.zgroup

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data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00074/volume/nocs_winding_number_field/.zgroup

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data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00074/volume/nocs_winding_number_field/128/.zarray

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+}

data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/instances/00074/volume/nocs_winding_number_field/128/0.0.0

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data/data_examples/VR_Folding/vr_simulation_folding_dataset_example.zarr/Tshirt/samples/.zgroup

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