Jun Wang, Mingli Dong, Wei Li, Peng Sun. Photogrammetric Method for Large Trough Solar Reflector[J]. Laser & Optoelectronics Progress, 2018, 55(5): 051204
- Laser & Optoelectronics Progress
- Vol. 55, Issue 5, 051204 (2018)
Fig. 1. Binocular stereo camera measurement model
Fig. 2. Principle of epipolar geometry
Fig. 3. Convex envelope polygon
Fig. 4. Selecting the non-collinear image points on image surface through convex envelope contours detection method. (a) Selecting four vertices of convex envelope; (b) selecting five non-collinear image points; (c) only three vertices of convex envelope
Fig. 5. Flow chart of trough solar reflector surface measurement
Fig. 6. Schematic of cameras extrinsic parameters conversion
Fig. 7. Larget rough solar reflector surface measurement field
Fig. 8. Photo taken by the photogrammetric camera (segment)
Fig. 9. Measurement results of large trough solar reflector surface. (a) Position distribution of the camera; (b) parabolic surface fitting by measuring points
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Table 1. Extrinsic parameter absolute error results obtained by relative orientation
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Table 2. RMS absolute errors of measuring points and εz after bundle adjustment
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