| Title | Impact of no GCP on elevation extraction from WorldView stereo data |
| |
| Author | Toutin, T; Schmitt, C V; Wang, H |
| Source | ISPRS Journal of Photogrammetry and Remote Sensing vol. 72, 2012 p. 73-79, https://doi.org/10.1016/j.isprsjprs.2012.05.009 |
| Image |  |
| Year | 2012 |
| Alt Series | Earth Sciences Sector, Contribution Series 20120384 |
| Publisher | Elsevier BV |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Quebec |
| NTS | 21L/14; 21M/03 |
| Lat/Long WENS | -71.5000 -71.0000 47.2500 46.7500 |
| Subjects | geophysics; remote sensing; satellite imagery; models; modelling; photogrammetric surveys; photogrammetric techniques; LiDAR |
| Illustrations | satellite images; plots; models; flow charts; tables |
| Program | Remote Sensing Science |
| Released | 2012 08 01 |
| Abstract | A hybrid model based on 3D deterministic Toutin's model developed at the Canada Centre for Remote Sensing and taking full advantages of the image metadata was used to geometrically process World- View-1
and -2 stereo images without in situ ground control points (GCPs) collection. Elevations were thus extracted and compared to 0.2-m accurate lidar elevation data to see the impact of no-GCP. Elevations linear errors with 68% confidence level (LE68)
computed over bare surfaces were 2.6 m and 2.1 m for WorldView-1 and -2, respectively with small biases. The not-significant difference in LE68 (around 10 - 20 cm), when compared to the solution using accurate GCPs, will offer strong advantages of
no-control collection in operational conditions, mainly in remote and harsh environments or when cartographic or ground control data do not exist. |
| GEOSCAN ID | 292201 |
|
|