Radial distortion and components of decentering distortion in modern aerial cameras
Abstract
Radial distortion and decentering distortion of wide-angle cameras were studied. Radial asymmetry is calculated with the calibration results if the reference point is in principal point of autocollimation. Symmetric tangential distortion is determined with a goniometer. Cameras show little distortion (+ or - 2 microns) with a tangential distortion between 1 and 2 mm, good color correction and high geometrical stability. Calibration procedures should be developed to correct very fine distortion values lower than 2 microns with respect to light and standardization, optimization of the calibrating instrument grid, angle measuring system, autocollimation system and observation accuracy for optimal grid intersection. The effects of phase deflection due to energy field on measurement accuracy should be studied.
- Publication:
-
Deutsche Geodaetische Kommission Camera Calibration in Photogrammetric Practice
- Pub Date:
- 1985
- Bibcode:
- 1985dgkc.rept...15H
- Keywords:
-
- Asymmetry;
- Cameras;
- Collimation;
- Distortion;
- Optical Correction Procedure;
- Wide Angle Lenses;
- Accuracy;
- Aerial Photography;
- Calibrating;
- Photogoniometers