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Large Composite Calibration Plate with Checkerboard and Dot Composite Pattern on Aluminum Substrate for Calibration Board up to 3500mm Width
Composite Calibration Plate
,Checkerboard And Dot Calibration Plate
,Large Sized Calibration Plate
The large-sized checkerboard and dot composite calibration plate is a high-precision optical reference tool that combines the advantages of both calibration plate types. It is specifically engineered for multi-sensor calibration requirements in large fields of view and complex working conditions.
Integrating both checkerboard corner and dot array features, this design retains the high sub-pixel detection accuracy of checkerboard corners and native compatibility with OpenCV/Halcon platforms, while also offering the anti-defocusing, anti-light-interference, and stable 360° rotation recognition capabilities of dot calibration boards. Some models include built-in global encoding identifiers, enabling pose calculation even under partial occlusion.
Conventional single-block sizes can cover over 300 × 300 mm, with a maximum of 3 m × 5 m integrated molding. Splicing is supported to achieve super-large field-of-view coverage exceeding 10 m, fully suitable for large field-of-view calibration scenarios such as autonomous driving, storage robots, and aerial remote sensing.
Multiple substrates are available, including glass, metal, and carbon fiber composite materials, with a thermal expansion coefficient as low as 2–5 × 10⁻⁶/℃. Typical processing accuracy is ±15–30 μm, with a matte low-reflectivity surface treatment and an optical contrast ratio of ≥100:1, ensuring stable feature point extraction even in strong light environments.
| Pattern Type | Checkerboard corner + dot array composite |
|---|---|
| Standard Single-Block Size | Over 300 × 300 mm |
| Maximum Integrated Size | 3 m × 5 m |
| Maximum Spliced Coverage | Over 10 m field of view |
| Substrate Options | Glass, metal, carbon fiber composite |
| Thermal Expansion Coefficient | 2–5 × 10⁻⁶/℃ |
| Typical Processing Accuracy | ±15–30 μm |
| Surface Treatment | Matte low reflectivity |
| Optical Contrast Ratio | ≥100:1 |
| Software Compatibility | OpenCV, Halcon |
- Automated Vehicle Mass Production Line Quickly adapts to the joint calibration of surround-view cameras, front-view cameras, and LiDAR for different vehicle models. Calibration time for a single vehicle can be controlled within 5 minutes, greatly improving production line efficiency.
- Large Field-of-View Visual Inspection Suitable for large-format scanning equipment and multi-camera global stitching calibration, solving the problem of insufficient accuracy that conventional small-sized calibration boards cannot cover in large fields of view.
- Field Testing and After-Sales Maintenance Equipped with a movable industrial-grade aluminum profile bracket featuring a pulley locking structure at the base, supporting 360° horizontal rotation and ±90° pitch adjustment. It can be quickly deployed by a single person, suitable for dynamic calibration needs in multiple field scenarios.
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