We are pleased to announce an update to the VLS (Versatile Light System) evaluation software. Version 1.2 introduces temporal recording measurements, allowing you to capture one image per luminance step. The VLS now supports both spatial and temporal recording measurements as outlined in the IEEE-P2020 standard. Test results can be used to evaluate your camera system's CTA (contrast transfer accuracy), CSNR (contrast signal-to-noise ratio), and dynamic range performance.
Spatial and Temporal Recordings
Spatial and temporal measurements are both beneficial to the overall test results. Temporal recording measurements avoid issues with flare that often occur during camera alignment to a light source. Spatial recording measurements are faster and benefit systems unsuitable for temporal measurement due to lens influences or dynamic image processing (e.g., auto-exposure). A combination of spatial and temporal recordings will provide a broader range of data for more precise calculations.
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When performing temporal CTA measurements in our iQ-Lab, we first ensure the desired testing temperature* is set (temperature control is particularly crucial for obtaining accurate CTA results). Once the temperature is stabilized, we generate the luminance steps with the Vega light source (starting with low light and getting brighter over time) and record the DUT’s captured results.
Vega light source
The Vega light source uses DC technology to create a high-stability light source with flicker-generation capabilities. DC technology benefits all camera testing, including tests with very short exposure times, such as those for automotive-grade cameras.
- High dynamic range testing
- Very short exposure time testing
- Extremely stable
- Various flicker modes
Versatile Light System
The VLS (Versatile Light System) is a versatile illumination solution that efficiently measures a wide range of image quality factors, including contrast transfer accuracy (CTA), modulated light mitigation probability (MMP), contrast signal-to-noise ratio (CSNR), and dynamic range. The setup, powered by six Vega light sources, creates a dynamic scene that can be quickly rearranged to generate typical illumination challenges faced by automotive cameras and sensor systems.
We offer VLS-Control software to control the different light sources and VLS-Evaluation software to analyze the camera’s performance using the defined KPIs (such as those from IEEE-P2020), including CTA, MMP, CSNR, and dynamic range.
*We utilize the iQ-Climate Chamber in our iQ-Lab to control the temperature of our camera testing environment.