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name: live-demo description: "Run and troubleshoot MonoGS RealSense live demos and the Open3D/OpenGL GUI." disable-model-invocation: true metadata: disco-role: operating license: NOASSERTION

Live Demo

Use this sub-skill when the user asks about live MonoGS capture, Intel RealSense cameras, USB/device access, GUI behavior, Open3D/GLFW/OpenGL display errors, or interactive visualization controls.

Route away

• Base CUDA/PyTorch/submodule installation belongs to environment-setup.
• Offline TUM/Replica/EuRoC data and configs belong to data-and-configs.
• Offline SLAM commands belong to offline-slam.
• Saved-result metrics belong to evaluation-and-results.

Fast path

1. Verify the base MonoGS environment and CUDA extensions first.
2. Install the optional RealSense dependency only when the user will run live camera workflows:

   pip install pyrealsense2
   

3. Check GUI and camera prerequisites without opening a window:

   python scripts/check_live_demo_prereqs.py --require-cuda
   

   Add --probe-camera only with an attached RealSense device and user approval.
4. Choose a live config:
   • monocular RealSense: python slam.py --config configs/live/realsense.yaml
   • RGB-D RealSense: python slam.py --config configs/live/realsense_rgbd.yaml
5. Use USB-3, avoid aggressive motion during initialization, and expect GUI to be forced on for Dataset.type: realsense.

Bundled references

• Live RealSense covers camera modes, config differences, and safe operation.
• GUI reference describes the visualization process, controls, and rendering surfaces.
• Troubleshooting maps RealSense, Open3D, GLFW, OpenGL, and CUDA symptoms to recovery steps.
• scripts/check_live_demo_prereqs.py runs read-only imports and optional camera probing.