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http://dx.doi.org/10.7848/ksgpc.2018.36.4.295

Calibration Comparison of Single Camera and Stereo Camera  

Kim, Eui Myoung (Department of GIS Engineering, Namseoul University)
Hong, Song Pyo (Department of GIS Engineering, Namseoul University)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.36, no.4, 2018 , pp. 295-303 More about this Journal
Abstract
The stereo camera system has a fixed baseline and therefore has a constant scale. However, it is difficult to measure the actual three-dimensional coordinate since the scale is not fixed when relative orientation parameters are determined through the key-point matching in the stereo image each time. Therefore, the purpose of this study was to perform the stereo camera calibration that simultaneously determines the internal characteristics of the left and right cameras and the camera relationship between them using the modified collinearity equation and compared it with the two independent single cameras calibration. In the experiment using the images taken at close range, the RMSE (Root Mean Square Error) of ${\pm}0.014m$ was occurred when the three dimensional distances were compared in the single calibration results. On the other hand, the accuracy of the three-dimensional distance of the stereo camera calibration was better because the stereo camera results were almost no error compared to the results from two single cameras. In the comparison of the epipolar images, the RMSE of the stereo camera was 0.3 pixel more than that of the two single cameras, but the effect was not significant.
Keywords
Stereo Camera System; Relative Orientation Parameters; Modified Collinearity Equation; Stereo Camera Calibration; Epipolar Image;
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Times Cited By KSCI : 6  (Citation Analysis)
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