Calibration parameters
Pixels-per-centimeter factor, detected arena boundaries, and confidence score for the calibration fit.
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← Capabilities
Automatic Arena Calibration
One-click spatial calibration for accurate real-world measurements
Enter known arena dimensions and ConductVision auto-detects arena edges, computes the pixel-to-centimeter conversion factor, and persists the calibration across sessions.
<1mm
Calibration accuracy
Auto
Arena edge detection
Yes
Persistent across sessions
Multi
Multi-camera support
The problem
Manual calibration wastes time and introduces measurement error
Placing a ruler in the frame, counting pixels, and computing a conversion factor is tedious and must be repeated whenever the camera moves. Errors in this step propagate to every distance and velocity measurement in the experiment.
- Manual ruler placement requires physical access to the arena during setup
- Pixel-counting introduces human error that propagates to all spatial measurements
- Camera repositioning invalidates previous calibration — requiring complete recalibration
The solution
Enter dimensions, get calibrated measurements
Enter the known arena dimensions (diameter for circular, length/width for rectangular). ConductVision detects the arena boundaries in the image and computes the conversion factor automatically. Calibration persists across sessions until the camera is moved.
- Automatic arena edge detection from the video frame — no ruler needed
- Calibration stored per arena configuration and reloaded for each session
- Multi-camera calibration for 3D tracking setups with cross-camera alignment
Endpoints
Calibration outputs
Calibrated tracking data
All spatial measures (distance, velocity, zone dimensions) reported in real-world units (cm, cm/s) rather than pixels.
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Arena boundary overlay
Visual confirmation of detected arena edges overlaid on the video frame for verification before starting acquisition.
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Applications
Calibration-dependent paradigms
Accurate distance and velocity
Total distance traveled and instantaneous velocity in cm and cm/s — comparable across different camera setups and arena sizes.
Measures
- Distance (cm)
- Velocity (cm/s)
- Acceleration (cm/s2)
Real-world zone dimensions
Define zones in centimeters rather than pixels — a "2 cm proximity zone" means the same thing regardless of camera height.
Measures
- Zone area (cm2)
- Proximity distance (cm)
- Zone entry threshold (cm)
Cross-arena comparability
Different arena sizes and camera heights produce different pixel scales. Calibration normalizes all data to real-world units for direct comparison.
Measures
- Normalized distance
- Comparable velocity
- Standardized zone metrics
Persistent calibration across sessions
Weeks-long studies do not require recalibration unless the camera is physically moved. Saves setup time and eliminates calibration drift.
Measures
- Calibration stability
- Session-to-session consistency
- Re-calibration trigger
Compared to typical systems
How ConductVision differs
| Feature | ConductVision | Typical systems |
|---|---|---|
| Calibration method | Automatic arena edge detection | Manual ruler placement |
| Calibration persistence | Saved per arena, reloaded | Re-calibrate each session |
| Multi-camera support | Cross-camera alignment included | Single camera only |
| Accuracy | Sub-millimeter | Depends on ruler placement |
| Setup time | Under 10 seconds | 2-5 minutes per arena |
Related capabilities
Precision Tracking
High-resolution 30 fps tracking that captures sub-second behavioral events conventional systems miss.
Configurable ROI Editor
Visual ROI editor with drag-and-drop zone drawing and real-time occupancy preview.
3D Tracking
Full X/Y/Z coordinate reconstruction from calibrated multi-camera arrays for vertical behavior quantification.
Accurate measurements from the first frame
Enter your arena dimensions and start tracking in calibrated real-world units immediately.
