GEOCAL is a geometric camera calibration device that uses a beam-expanded laser in combination with a diffractive optical element (DOE).
Application Context
Geometric camera calibration is essential for imaging systems in industries such as automotive, ADAS, and security, where accurate object detection in dynamic scenes is required. After calibration, camera systems can measure distances more reliably, detect objects more accurately, and compensate for geometric distortion, particularly in wide-field-of-view configurations. It also enables precise alignment of stereo camera pairs.
Advantages of GEOCAL
Conventional geometric calibration methods rely on printed test charts with regular patterns, which must be scaled to match field of view and working distance. In addition, many setups require relay lenses when compact designs or infinity-based calibration are needed.
GEOCAL eliminates the need for test charts and relay lenses, while enabling high-precision measurement of geometric distortion, intrinsic and extrinsic parameters, and stereo camera alignment. It can also be used without external illumination.
