期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2002
卷号：XXXIV Part 3 B
页码：176-180
出版社：Copernicus Publications
摘要：Recent increase in number of pixels of images acquired by a non-metric digital camera encourages an amateur to utilize it for 3D measurement. Most of current camera calibration methods are inconvenient and expensive for an amateur to calibrate his digital camera. Therefore we have developed a method for an amateur to calibrate a non-metric digital camera easily. Our proposed method needs a lot of objects (calibration points) recognizable in an image instead of targets. Eight convergent images are acquired from eight different directions with four different camera frame rotation angles of 0°, +90°, +180° and -90°. Measurement of image coordinates of calibration points are in principle executed by template matching. A set of camera parameters is determined by the bundle adjustment. A field experiment and a numerical simulation were conducted to investigate performance of our proposed method. The results of the field experiment and the numerical simulation indicate that the proposed method using a set of calibration points distributed on the 2D plane can provide a reliable set of camera parameters. Error of an image distortion model estimated by the proposed method is expected to be up to approximately ±3 pixels or ±12 μm on the image. Since our proposed method needs neither special equipment nor ground survey of control points, we believe that the proposed method is useful for an amateur to calibrate his digital camera
