Multiview Calibration

Our advanced calibration methods compensate for unavoidable lens-specific optical distortions as well as tolerances in the mounting of the optics on the cameras to enable precise 3D evaluations and sub-pixel disparity analysis.

In order to reliably detect disparity differences of less than one pixel, precise coordination and alignment of the (in the case of the K|Lens virtual) cameras and optics is essential. Each lens has unavoidable specific distortions. These can result in calculation and measurement errors, especially in 3D evaluations based on disparities between the 9 perspectives of the K|Lens Light Field Sensor. The specific tolerances when mounting the lens on the camera must also be taken into account.

With our highly developed calibration procedure, such characteristics can be compensated for so that disparity differences of less than one pixel can be detected with high robustness and transformed into precise metric depth values.

For this purpose, we have developed an advanced calibration procedure that can calibrate not only the K|Lens light field sensor but also complex camera arrays. In addition, this process enables the upgrade of accuracy and performance of individual cameras and camera systems.

Important technical features

Highly flexible image rectification for a wide range of camera systems

Our advanced algorithms provide exceptional flexibility for precise image rectification, making them suitable for a wide range of cameras and lenses. These algorithms can be applied to our K|Lens light field sensor to make the most of its unique multi-view data, as well as to conventional standard cameras to improve their image quality.

Precise metric calibration for accurate 3D reconstruction

Metric calibration is a critical requirement for converting depth maps into real, physical measurements. Our calibration procedures make it possible to reconstruct 3D data with the highest accuracy and thus ensure reliable measurements in metric units.

Sub-pixel accuracy for maximum precision

To achieve outstanding precision, all our algorithms work with subpixel accuracy. This means that we are able to perform image features and measurements with an accuracy that goes beyond the resolution of individual pixels.

High-precision calibration for demanding applications

Our calibration methods are characterized by their exceptional accuracy, achieving accuracies for our Light Field Sensor HighRes of up to 5µm in the lateral direction and 20µm in the z-direction. (The standard deviation is given, i.e. the measurement deviates from the true value by less than +/- 5µm in approx. 70% of cases). This high precision enables our technology to be used in demanding applications that require maximum measurement accuracy.

Adaptable calibration for complex camera systems

Our algorithms are not limited to individual camera systems, but can also be used to calibrate complex camera arrays. This enables precise synchronization and calibration of multiple cameras to capture comprehensive 3D data.

Easy and fast calibration

Our calibration methods run automatically in less than a minute. This means that no specially trained personnel are required to carry out a complete calibration of our camera systems.

Integration options

Fast and precise calibration of the K|Lens light field sensor

Specialized algorithms enable efficient and highly accurate calibration of the K|Lens light field sensor (1inch or HighRes) to ensure optimal performance and data quality.

Seamless integration of calibration into depth calculation for consistent and accurate 3D data

Our calibration algorithms are seamlessly integrated into the depth calculation process to ensure high accuracy and consistency of 3D data throughout. This enables smooth processing of disparity data and its conversion into accurate depth maps without manual intervention.

User-friendly calibration interface for automatic hardware calibration and quality visualization

An intuitive application interface (UI) allows users to perform fully automated hardware calibration. The interface provides visual feedback on calibration quality, allowing users to check results immediately and make adjustments if necessary.

Application Examples

weldAI

Inspection of hairpin welding for electrical vehicles

pinOPTIX

3D connector inspection

PCB-IntelliScan

Recognizing and identifying components on printed circuit boards

honeycombINSPECT

Revolutionary inspection of honeycomb structures

lightfieldLAB

Light field laboratory system for the rapid generation of 3D point clouds

Advantages

Highest precision and accuracy for demanding applications

K|Lens calibration ensures exceptional measurement accuracy to meet even the most demanding applications in fields such as industrial quality control, metrology and robotics. Precise compensation of lens-specific distortions and mounting tolerances generates reliable and reproducible 2D and 3D data.

Fully automated background calibration for real-time 3D visualization

Calibration is automatically applied in the background to convert disparity values into visualizable 3D depth information in real time. This enables instant 3D visualization of captured data without delays, which is especially beneficial in dynamic environments.

Minimize downtime by easily restoring operational readiness

In the event of a malfunction, such as the replacement of a camera or an optical component, K|Lens calibration enables the system to be recalibrated quickly and easily. This significantly reduces downtime and ensures continuous production or smooth operation. Calibration can be carried out again quickly using software support. This saves time and costs.

Multiview Calibration

Important technical features

Integration options

Application Examples

Advantages

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