Large-scale automatic block adjustment from satellite to indoor photogrammetry

Figures & data

Figure 1. Workflow of BA.

Figure 2. Distribution of residual elevation before and after the introduction of laser points in the test area of Shandong Province.

Table 1. Statistical table of checkpoint accuracy (m).

ID	Name	Re-projection error xy (pixel)	XY (m)	Z (m)	XYZ (m)
1	J022	0.551	0.054	0.045	0.070
2	J017	0.640	0.023	0.084	0.087
3	J19	0.317	0.047	0.024	0.053
4	J18	0.668	0.057	0.007	0.057
5	J23	0.478	0.049	0.020	0.053
6	J20	0.518	0.051	0.004	0.051
7	J21	0.936	0.061	0.052	0.080
8	J032	0.890	0.052	0.038	0.064
9	J030	0.140	0.039	0.034	0.052
10	J024	0.352	0.016	0.017	0.023
11	J027	0.609	0.011	0.013	0.017
MAX		0.936	0.061	0.084	0.087
MIN		0.140	0.011	0.004	0.017
MEAN		0.554	0.042	0.031	0.055
RMSE		0.598	0.045	0.038	0.059

Figure 3. 13th Cave of Yungang Grottoes and data collection site.

Figure 4. Schematic diagram of aerial triangulation.

Table 2. Checkpoint accuracy.

ID	Name	Re-projection error xy (pixel)	XY (m)	Z (m)	XYZ (m)
1	J001	0.631	0.004	0.001	0.004
2	J002	0.52	0.009	0.005	0.010
3	J003	0.546	0.015	0.003	0.015
4	J004	0.721	0.014	0.003	0.014
5	J005	0.834	0.005	0.012	0.013
6	J006	0.738	0.002	0.015	0.015
7	J007	0.826	0.007	0.009	0.011
8	J008	0.910	0.012	0.012	0.017
9	J009	0.334	0.006	0.014	0.015
MAX		0.910	0.015	0.015	0.017
MIN		0.334	0.002	0.001	0.004
MEAN		0.673	0.008	0.008	0.013
RMSE		0.695	0.009	0.010	0.013

Data availability statement

The ZY-3 stereo imagery data that support the findings of this study are restricted in access and use, but can be queried and requested from the website of the China Centre for Resources Satellite Data and Application (CRESDA) (http://www.cresda.com/EN/) and Chinese Natural Resources Satellite Remote Sensing Cloud Service Platform (http://sasclouds.com/chinese/normal/). The GLAS/ICESat data are openly available and can be acquired from the National Snow & Ice Data Center (NSIDC) at https://nsidc.org/data/.