Abstract
Recently, several low-cost terrestrial Mobile Mapping Systems (MMSs) have been developed for the construction of 3D city models and mapping. A terrestrial MMS combining GNSS and IMU are able to perform the direct geo-referencing and then to use forward intersections to determine a number of spatial coordinates of image points. However, according to many experiments, the accuracy of positioning results with a low cost Terrestrial MMS using only the direct geo-referencing and forward intersections is not stable because of the bad base-depth ratio in the terrestrial Photogrammetry, the GNSS signal obstruction in city regions, and less redundancy for extra examination which leads also to unreliability of positioning results. This research uses the exterior orientations obtained from a terrestrial MMS with the help of ground control points and introduces them into a bundle block adjustment in order to improve the positioning accuracy. Based on our experiments using a set of real MMS data, a bundle block adjustment with exterior orientations as weighted control can only increase the positioning accuracy from 4.8 m to 3.1 m. Our experiments have shown that the accuracy in the level of 12 cm can be achieved by extra adding several pairs of ground control points.
| Original language | English |
|---|---|
| Pages | 2370-2377 |
| Number of pages | 8 |
| Publication status | Published - 2018 Jan 1 |
| Event | 39th Asian Conference on Remote Sensing: Remote Sensing Enabling Prosperity, ACRS 2018 - Kuala Lumpur, Malaysia Duration: 2018 Oct 15 → 2018 Oct 19 |
Conference
| Conference | 39th Asian Conference on Remote Sensing: Remote Sensing Enabling Prosperity, ACRS 2018 |
|---|---|
| Country | Malaysia |
| City | Kuala Lumpur |
| Period | 18-10-15 → 18-10-19 |
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All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Information Systems
- Earth and Planetary Sciences(all)
- Computer Networks and Communications
Cite this
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Positioning accuracy improvement of terrestrial mobile mapping systems using a bundle block adjustment. / Lin, S. W.; You, Rey-Jer.
2018. 2370-2377 Paper presented at 39th Asian Conference on Remote Sensing: Remote Sensing Enabling Prosperity, ACRS 2018, Kuala Lumpur, Malaysia.Research output: Contribution to conference › Paper
TY - CONF
T1 - Positioning accuracy improvement of terrestrial mobile mapping systems using a bundle block adjustment
AU - Lin, S. W.
AU - You, Rey-Jer
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Recently, several low-cost terrestrial Mobile Mapping Systems (MMSs) have been developed for the construction of 3D city models and mapping. A terrestrial MMS combining GNSS and IMU are able to perform the direct geo-referencing and then to use forward intersections to determine a number of spatial coordinates of image points. However, according to many experiments, the accuracy of positioning results with a low cost Terrestrial MMS using only the direct geo-referencing and forward intersections is not stable because of the bad base-depth ratio in the terrestrial Photogrammetry, the GNSS signal obstruction in city regions, and less redundancy for extra examination which leads also to unreliability of positioning results. This research uses the exterior orientations obtained from a terrestrial MMS with the help of ground control points and introduces them into a bundle block adjustment in order to improve the positioning accuracy. Based on our experiments using a set of real MMS data, a bundle block adjustment with exterior orientations as weighted control can only increase the positioning accuracy from 4.8 m to 3.1 m. Our experiments have shown that the accuracy in the level of 12 cm can be achieved by extra adding several pairs of ground control points.
AB - Recently, several low-cost terrestrial Mobile Mapping Systems (MMSs) have been developed for the construction of 3D city models and mapping. A terrestrial MMS combining GNSS and IMU are able to perform the direct geo-referencing and then to use forward intersections to determine a number of spatial coordinates of image points. However, according to many experiments, the accuracy of positioning results with a low cost Terrestrial MMS using only the direct geo-referencing and forward intersections is not stable because of the bad base-depth ratio in the terrestrial Photogrammetry, the GNSS signal obstruction in city regions, and less redundancy for extra examination which leads also to unreliability of positioning results. This research uses the exterior orientations obtained from a terrestrial MMS with the help of ground control points and introduces them into a bundle block adjustment in order to improve the positioning accuracy. Based on our experiments using a set of real MMS data, a bundle block adjustment with exterior orientations as weighted control can only increase the positioning accuracy from 4.8 m to 3.1 m. Our experiments have shown that the accuracy in the level of 12 cm can be achieved by extra adding several pairs of ground control points.
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M3 - Paper
AN - SCOPUS:85071889543
SP - 2370
EP - 2377
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