Robot camera problems are often misdiagnosed as AI problems. Before a demo day, small teams should run a camera checkout that is boring, repeatable, and written down. Focus, glare, exposure, cable strain, lens contamination, and lighting changes can all look like perception-model weakness once the robot is on a show floor.
This guide is for student teams, maker groups, and small robotics labs that need a practical preflight. It does not assume TVG has tested a specific camera or robot. The point is to reduce avoidable failures before a public run.
Quick answer
- Use a fixed focus target and record the expected image before transport.
- Test glare and exposure under lighting that resembles the venue.
- Label camera cables at both ends and add strain relief near the connector.
- Keep a known-good camera profile and a rollback plan.
Start with the image, not the model
If the raw frame is soft, noisy, overexposed, or shifted, the perception stack is already starting behind. Teams should save reference frames from the bench, then compare them with frames captured at the venue. The goal is not a perfect lab chart. The goal is noticing that the robot’s camera moved, the lens is smudged, or the lighting is saturating a key target.
TVG’s robot-camera field-of-view calibration guide covers the same mindset: a camera is part of a physical system, not a floating software input.
Check focus, exposure, and glare
Run a short checklist at the expected working distance. Put the target where the robot will actually detect objects. Check the corners of the image, not only the center. Move one bright object into the scene and see whether the camera exposure collapses. If the venue uses glossy floors or bright windows, test for reflections before the robot is surrounded by people.
OpenCV and AprilTag workflows both reward clean input images. If tags or fiducials are part of the demo, print spares, tape them flat, and photograph them from the robot’s real approach angles.
Cables and mounts are vision components
A loose camera cable can create intermittent frame loss. A flexible mount can change the field of view after one bump. A cable with no label can cost ten minutes when a team is already under pressure. TVG’s camera cable-label guide is deliberately simple because demo-day reliability often depends on simple habits.
A demo checkout should also have an owner. One person should be responsible for confirming that the camera image, cable labels, and mount position match the saved reference before the robot is powered for visitors. Shared responsibility is useful during building; it is risky during final setup.
TVG demo-day checklist
- Capture and save a known-good frame from each camera.
- Verify focus at the real working distance.
- Test under bright, dim, and mixed lighting.
- Check all camera mounts after transport.
- Label both ends of each camera cable.
- Restart the robot once and confirm the camera order did not change.
- Keep a rollback profile for exposure, resolution, and frame rate.
TVG take
Small teams do not need a huge test department to improve demo reliability. They need a short camera checkout that treats optics, mounting, lighting, cables, and software settings as one system.
