Laboratory calibration and characterization of video cameras
| Autor: | A. W. Burner, Walter L. Snow, W. K. Goad, Mark R. Shortis |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Physics
business.industry Distortion (optics) Astrophysics::Instrumentation and Methods for Astrophysics law.invention Camera lens Lens (optics) Autocollimation Optics Frame grabber law Computer Science::Computer Vision and Pattern Recognition Professional video camera Calibration Computer vision Artificial intelligence business Plumb bob |
| Zdroj: | Close-Range Photogrammetry Meets Machine Vision. |
| DOI: | 10.1117/12.2294328 |
| Popis: | Some techniques for laboratory calibration and characterization of video cameras used with frame grabber boards are presented. A laser-illuminated displaced reticle technique (with camera lens removed) is used to determine the camera/grabber effective horizontal and vertical pixel spacing as well as the angle of non-perpendicularity of the axes. The principal point of autocollimation and point of symmetry are found by illuminating the camera with an unexpanded laser beam, either aligned with the sensor or lens. Lens distortion and the principal distance are determined from images of a calibration plate suitable aligned with the camera. Calibration and characterization results for several video cameras are presented. Differences between these laboratory techniques and test range and plumb line calibration are noted. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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