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Journal of Sensors
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2018
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Article
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Tab 6
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Research Article
Deformation Measurement of a Railroad Bridge Using a Photogrammetric Board without Control Point Survey
Table 6
Maximum difference between the photogrammetry of the two cases and the laser tracker (unit: mm).
Cases
direction
direction
direction
Range
Conventional method
1.41
0.83
2.48
1.08
Proposed method
1.80
0.82
1.96
1.05