Update README.md

README.md

@@ -1,83 +1,63 @@
 ---
 license: cc-by-4.0
 ---
+
 # OctoNet Multi-Modal Dataset
+<div style="text-align:center;">
+  <a href="https://aiot-lab.github.io/OctoNet/" target="_blank">
+    <img src="https://img.shields.io/badge/Project%20Page-Visit-blue" alt="Project Page" style="margin-right:10px;">
+  </a>
+  <a href="https://github.com/hku-aiot/OctoNet" target="_blank">
+    <img src="https://img.shields.io/badge/GitHub-Visit-lightgrey" alt="GitHub" style="margin-right:10px;">
+  </a>
+</div>
 
 Welcome to the **OctoNet** multi-modal dataset! This dataset provides a variety of human activity recordings from multiple sensor modalities, enabling advanced research in activity recognition, pose estimation, multi-modal data fusion, and more.
 
----
-
 ## 1. Overview
-
-- **Name**: OctoNet  
+- **Name**: OctoNet
 - **Data**: Multi-modal sensor data, including:
-  - Inertial measurement unit (IMU) data  
-  - Motion capture data in CSV and `.npy` formats  
-  - mmWave / Radar data (vayyar_pickle)  
-  - Multiple sensor nodes (`node_1`, `node_2`, etc.) capturing different data streams  
+  - Inertial measurement unit (IMU) data
+  - Motion capture data in CSV and `.npy` formats
+  - mmWave / Radar data (vayyar_pickle)
+  - Multiple sensor nodes (`node_1`, `node_2`, etc.) capturing different data streams
 - **Use Cases**:
-  - Human activity recognition  
-  - Human pose estimation 
-  - Multi-modal signal processing  
-  - Machine learning/deep learning model training  
-
----
+  - Human activity recognition
+  - Human pose estimation
+  - Multi-modal signal processing
+  - Machine learning/deep learning model training
 
 ## 2. File Chunks
-
-Because of the large dataset size, it has been split into multiple chunks:
-''
+Because of the large dataset size (~768GB), it has been split into 16 chunks of approximately 48GB each:
+```
 Octonet_chunk_aa
 Octonet_chunk_ab
 ...
 Octonet_chunk_ap
-''
-
+```
 All chunks are required to reconstruct the full dataset.
 
----
-
 
-## 3. Download & Merge Instructions
+## 3. Automated Download, Merge & Extract Script
+Due to the large size and multiple steps involved, we provide a convenience script that handles downloading, merging, and extracting the dataset automatically.
 
-### 3.1 Download All Chunks at Once
+**Important:** This process will download approximately **768GB** of data and at peak might require up to **~1.5TB+** of free disk space in the current directory during the merge and extraction phases. Please ensure you have enough space!
 
-Below is an example **bash** snippet that downloads all chunks in sequence. Make sure you have `wget` installed:
+To download and process the data using the latest version of the script directly from Hugging Face, execute one of the following commands in your terminal. This will download the script and pipe it directly to `bash` for execution.
 
 ```bash
-# Download all Octonet dataset chunks:
-for chunk in aa ab ac ad ae af ag ah ai aj ak al am an ao ap; do
-  wget https://huggingface.co/datasets/hku-aiot/OctoNet/resolve/main/Octonet_chunk_${chunk}
-done
+bash -c "$(wget -qO- https://huggingface.co/datasets/hku-aiot/OctoNet/resolve/main/download_octonet.sh)"
 ```
 
-### 3.2 Merge Chunks into a Single Tar (Bash)
-```bash
-cat Octonet_chunk_aa \
-    Octonet_chunk_ab \
-    Octonet_chunk_ac \
-    Octonet_chunk_ad \
-    Octonet_chunk_ae \
-    Octonet_chunk_af \
-    Octonet_chunk_ag \
-    Octonet_chunk_ah \
-    Octonet_chunk_ai \
-    Octonet_chunk_aj \
-    Octonet_chunk_ak \
-    Octonet_chunk_al \
-    Octonet_chunk_am \
-    Octonet_chunk_an \
-    Octonet_chunk_ao \
-    Octonet_chunk_ap \
-    > octonet.tar
-```
-### 3.3 Extract
-```bash
-tar -xvf octonet.tar
-```
+The script will:
+1. Download each chunk using `wget -c` (supports resuming).
+2. Merge all downloaded chunks into `octonet.tar`.
+3. **Remove** the individual chunk files (`Octonet_chunk_a*`) to save space.
+4. Extract the contents of `octonet.tar`.
+
 
 ## 4. Directory Structure
-After extracting octonet.tar, you should have a structure similar to:
+After extracting `octonet.tar`, you should have a directory named `octonet` with a structure similar to:
 ```bash
 .
 └── octonet
@@ -92,21 +72,13 @@ After extracting octonet.tar, you should have a structure similar to:
     ├── vayyar_pickle        # Vayyar mmWave radar data (.pickle)
     ├── cut_manual.csv       # Manually curated data segments
 ```
-## 5. Quick Start with Octonet Code
-
-For more details, refer to the original README in code repository in githublink.
-
-## 6. License
-License: CC BY 4.0
 
-## 7. Contact & Disclaimer
-Contact:
-
-    Email: 1155177815@link.cuhk.edu.hk
+## 5. Quick Start with Octonet Code
+For more details on working with the dataset programmatically, refer to the original README in the OctoNet code repository on GitHub: [https://github.com/hku-aiot/OctoNet](https://github.com/hku-aiot/OctoNet).
 
-    GitHub: 
 
-    Project page: https://aiot-lab.github.io/OctoNet/
+## 6. Contact & Disclaimer
+Contact: [Dongsheng Yuan](mailto:1155177815@link.cuhk.edu.hk)
 
 Disclaimer:
-This dataset is provided as is without warranties of any kind and is intended for research/educational purposes only. The creators assume no responsibility for any misuse or damages.
+This dataset is provided as is without warranties of any kind and is intended for research/educational purposes only. The creators assume no responsibility for any misuse or damages.