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http://dx.doi.org/10.7848/ksgpc.2012.30.6-1.511

A Study on Efficient Self-Calibration of a Non-Metric Camera for Close-range Photogrammetry  

Lee, Chang No (서울과학기술대학교 건설시스템디자인공학과)
Oh, Jae Hong (한국전자통신연구원 융합기술연구부문)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.30, no.6_1, 2012 , pp. 511-518 More about this Journal
Abstract
It is well-known that non-metric digital cameras have to be calibrated for the close-range photogrammetry. But, the self-calibration is still not an easy task because it requires rather a large calibration site of accurate control points, multiple image acquisitions in different positions, and accurate image point measurements that are quite labor-intensive and time-consuming. Based on the premise, this study carried out check point accuracy analysis from self-calibration of different control point designs and photo combinations. The test results showed that the calibration using three photos covering three-dimensional control points produced high accuracy, but control points on a plane could attain the comparable accuracy with four photos including a 90-degree rotated photo. We then compared the target accuracy of on-site self-calibration using flat control points to that of laboratory-self calibration and observed comparable results.
Keywords
Close-range; Camera Self-Calibration; Photogrammetry; Calibration Field;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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