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OrbbecSDK_ROS2/_sources/source/4_application_guide/point_cloud.md.txt
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## Enabling and Visualizing Point Cloud in ROS 2
This section demonstrates how to enable point cloud data output from the camera node and visualize it using RViz2.
### Enabling Depth Point Cloud
#### Command to Enable Depth Point Cloud
To activate the point cloud data stream for depth information, use the following command:
```bash
ros2 launch orbbec_camera gemini_330_series.launch.py enable_point_cloud:=true
```
#### Visualizing Depth Point Cloud in RViz2
After running the above command, perform the following steps to visualize the depth point cloud:
1. Open RViz2.
2. Add a `PointCloud2` display.
3. Select the `/camera/depth/points` topic for visualization.
4. Set the fixed frame to `camera_link` to properly align the data.
- **Example Visualization**
Here is what the depth point cloud might look like in RViz2:
![Depth Point Cloud Visualization](../image/point_cloud/image5.jpg)
### Enabling Colored Point Cloud
#### Command to Enable Colored Point Cloud
To enable the colored point cloud feature, enter the following command:
```bash
ros2 launch orbbec_camera gemini_330_series.launch.py enable_colored_point_cloud:=true
```
#### Visualizing Colored Point Cloud in RViz2
To visualize the colored point cloud data:
1. Launch RViz2 following the command execution.
2. Add a `PointCloud2` display panel.
3. Choose the `/camera/depth_registered/points` topic from the list.
4. Ensure the fixed frame is set to `camera_link`.
- **Example Visualization**
The result of the colored point cloud in RViz2 should look similar to this:
![Colored Point Cloud Visualization](../image/point_cloud/image6.jpg)