Geometric Camera Calibration - The GEOCAL method

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In this webinar, we discuss the traditional methods of geometric camera calibration such as using checkerboard test charts. We then present GEOCAL, a new method for geometric camera calibration.

GEOCAL is a compact device that uses a beam-expanded laser and a diffractive optical element to generate a grid of light spots originating from infinity.

What are the main characteristics of GEOCAL?

- Ability to generate a regular grid of light spots originating from infinity
- Measure geometric distortion, focal length, and principal point
- The camera position is translation invariant (to a certain extent)
- Easily manage the angle of camera rotation
- No relay lens required
- A very compact design
- Calibrate large field-of-view cameras
- Stereo camera alignments and adjustments
- Remove lens distortion using GEOCAL and OpenCV