Standard calibration methods often require perfect visibility and tedious manual alignment. Our ChArUco Calibration solution revolutionizes this process by combining the robustness of ArUco fiducial markers with the sub-pixel precision of standard checkerboards. This hybrid approach enables your PIV system to "see" and understand its position in 3D space, paving the way for fully automated, robotic PIV workflows.
Our ChArUco Calibration solution fundamentally streamlines the experimental workflow by fusing high-contrast ArUco markers with a precision checkerboard grid. This hybrid design allows for the immediate calculation of the complete 6D pose of the target relative to the camera using the sensor's known internal calibration matrix. By mathematically locking the optical components to the target in 3D space, the system automatically generates the necessary mapping functions for de-warping stereoscopic images, significantly reducing setup time and eliminating the need for manual parameter input.
Key Advantages:
Our ChArUco Calibration solution fundamentally streamlines the experimental workflow by fusing high-contrast ArUco markers with a precision checkerboard grid. This hybrid design allows for the immediate calculation of the complete 6D pose of the target relative to the camera using the sensor's known internal calibration matrix. By mathematically locking the optical components to the target in 3D space, the system automatically generates the necessary mapping functions for de-warping stereoscopic images, significantly reducing setup time and eliminating the need for manual parameter input.
Key Advantages:
- Automated Alignment: Whether you use industrial robots or motorized traverses, the ChArUco markers provide real-time coordinate transformations, allowing the system to automatically align cameras and light sheet optics to the measurement volume.
- Single-Shot 6D Pose: A single image is sufficient to calculate the complete 6D pose of the target relative to the camera. This eliminates the need for multi-level targets in Stereoscopic PIV, a simple single-level board is sufficient.
- Robust Detection: Designed for the real world, the algorithm detects the target pose even when parts of the board are hidden or out of the field of view.
- Smart Triggers: The fiducial markers do more than just calibrate; they can encode information to trigger pre-programmed robot behaviors, enabling a "set-and-forget" automatic calibration sequence.
- High Precision: Achieve sub-pixel accuracy by combining marker detection with gradient-based corner analysis. The system delivers low measurement uncertainty (e.g., approx. 0.5 mm in Y and 2.5 mm in X at a 2m distance)
