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The Accuracy Analysis of CCD Camera Calibration Based on Coplane

Author: GaoQin
Tutor: QuanBin
School: Xi'an University of Science and Technology
Course: Cartography and Geographic Information Engineering
Keywords: CCD camera Calibration Coplanar Distortion Continuous image pairs Relative orientation
CLC: P234.1
Type: Master's thesis
Year: 2008
Downloads: 295
Quote: 2
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Abstract


CCD cameras, also known as a digital camera, it is the use of the CCD photoelectric imaging technology developed a new generation of the camera. In recent years , CCD camera gradually used in close-range photogrammetry , low-altitude photogrammetry . The results of the photographic measurement accuracy can meet the engineering requirements , depending on the technical parameters of the camera and data processing technology . Therefore , the technical parameters of the camera calibration is to ensure the quality of results can meet the accuracy requirements of one of the key issues . Ordinary non-metric digital camera calibration, a commonly used method is direct linear transformation (DLT) model law , the basic idea is to set up a sufficient number of control points in space , prior to determination of the spatial coordinates of each control point control point position , with the camera shooting would like conformation point coordinates and space coordinates into the equation , the internal and external orientation elements of the camera can be calculated . When considering lens distortion error , he shall add the system error correction . Enabling the camera main pitch , like the main point coordinates and optical distortion and other factors caused the system error correction calibration correction . DLT direct linear transformation camera calibration method has been developed after years of research and analysis of a large number of experts and scholars , the calibration results point accuracy of 0.35 pixels . However , the need to establish the field of high-precision control , the inconvenience to the field of photogrammetry . For that reason , we propose a new control no matter party camera self - calibration method , the relative orientation of the method , which is based on the conditions of continuous coplanar like camera calibration parameter values ??. And DLT method of camera calibration results compared to verify the reliability of the respective calibration parameters . The experimental results show that the coplanar condition calibration method is reliable .

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > Photogrammetry and Surveying, Mapping and Remote Sensing > Non - topographic photogrammetry > Near shadow photogrammetry
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