Near Infrared Checkerboard Calibration Board For NIR Cameras and Sensors

Near-Infrared Calibration Board

The near-infrared checkerboard calibration board is designed specifically for near-infrared (NIR) cameras and sensors. By using a special coating formula, the problem of contrast loss or uneven reflection of ordinary visible cursor positioning plates in the near-infrared band has been solved, ensuring that the checkerboard corner points still maintain sharp edges under near-infrared light sources. It is suitable for visual calibration in various active infrared, night vision, and filter scenes.

Product features: Introduced high-precision micro spraying equipment from the United States, independently developed high-performance coatings, capable of achieving 850-940nm, reflectivity with an error of ± 0.5%, far exceeding industry standards. Support multi reflectivity fusion, while possessing high uniformity and durability.
1. Working principle:
Adopting self-developed surface coating technology, stable high contrast checkerboard patterns are formed under near-infrared light source irradiation. The algorithm extracts sub-pixel corner points at the intersection of black and white grids, establishes a mapping relationship between the image coordinate system and the world coordinate system, and calculates the camera's internal parameters and distortion coefficients in the near-infrared spectrum, eliminating the aberrations and dark angles unique to near-infrared lenses.
2.Core scope of application:
Calibration of near-infrared industrial cameras, calibration of intelligent driving night vision systems, agricultural and food sorting vision systems, semiconductor packaging inspection, and fusion calibration of LiDAR and cameras.

Checkerboard Calibration Board

Near Infrared Calibration Board

NIR Cameras Calibration Board

Near Infrared Checkerboard Calibration Board For NIR Cameras and Sensors Images