1. Why is light insufficient on T-beams?
T-beam bridges have vertical webs and dense diaphragms, low clearance under the girder and severe light obstruction. Under low light, conventional cameras lose dark-area detail and see rising noise, affecting the recognition of fine defects such as cracks.
2. How do automatic fill lights solve this?
RIEJIAN inspection equipment comes with automatic fill lights that activate during operations, ensuring adequate brightness and clarity for low-light areas such as T-beam webs and girder soffits, so crack details can be normally recognized by AI. Images captured with fill light are screened by AI and defect determination remains reliable.
3. Application scenarios for low-light imaging
| Scenario | Response |
|---|---|
| Light obstruction at T-beam webs | Automatic fill light |
| Girder soffits, shaded sides of bridge towers | Automatic fill light + navigation fixed-point |
| Overcast days, low morning/evening light | Fill light ensures clarity |
4. Applicable conditions and scenarios
- T-beam bridges and other poorly lit areas such as girder soffits
- Routine inspection operations under low-light conditions
- Fill light and capture parameters are coordinated automatically by the equipment
5. Notes
Under extremely complex lighting, key defects still require manual re-verification; fill-light capability is subject to the specific equipment configuration.