DEM GENERATION WITH SHORT BASE LENGTH PLEIADES TRIPLET
An image triplet of Pleiades images covering the area of Zonguldak, Turkey has been investigated. The height to base relation of the first to the last image is just 1:4.5 and for the first and the second image 1:9. This is quite below the usual height to base relation of 1:1.6 for a typical stereo p...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2015-03-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-3-W2/81/2015/isprsarchives-XL-3-W2-81-2015.pdf |
| _version_ | 1818011134101291008 |
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| author | K. Jacobsen H. Topan |
| author_facet | K. Jacobsen H. Topan |
| author_sort | K. Jacobsen |
| collection | DOAJ |
| description | An image triplet of Pleiades images covering the area of Zonguldak, Turkey has been investigated. The height to base relation of the
first to the last image is just 1:4.5 and for the first and the second image 1:9. This is quite below the usual height to base relation of
1:1.6 for a typical stereo pair of space images. The corresponding small angle of convergence influences the possible vertical
accuracy, but images with such a small angle of convergence are more similar to each other as images with larger convergence
angles. This enables a better image matching, improving the vertical accuracy and compensating partially the influence of poor
intersection geometry. Even over forest areas no matching gaps occurred. Height models are generated with different base
configurations and compared with a reference height model.
Pleiades images are distributed with 50cm ground sampling distance instead of the physical size of 70cm, the image quality justifies
this zooming and also the geometric results are in the range of other space images with originally 50cm GSD.
The image orientation by bias corrected Rational Polynomial Coefficients (RPC) is leading with more as 160 ground control points
(GCP) to root mean square (RMS) differences slightly below 1.0 GSD of the distributed images (0.5m GSD). Only negligible
systematic errors have been identified. With the combination of the first and last image a standard deviation of the generated height
model of 1.6m, respectively for flat terrain close to 1.0m has been reached in relation to a reference height model. The small angle of
convergence is not as much influencing the height accuracy as according to simple geometric relation. |
| first_indexed | 2024-04-14T06:03:45Z |
| format | Article |
| id | doaj.art-838ce16b46994bc8b8fb0c3f5e2d6e90 |
| institution | Directory Open Access Journal |
| issn | 1682-1750 2194-9034 |
| language | English |
| last_indexed | 2024-04-14T06:03:45Z |
| publishDate | 2015-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj.art-838ce16b46994bc8b8fb0c3f5e2d6e902022-12-22T02:08:38ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342015-03-01XL-3/W2818610.5194/isprsarchives-XL-3-W2-81-2015DEM GENERATION WITH SHORT BASE LENGTH PLEIADES TRIPLETK. Jacobsen0H. Topan1Leibniz University Hannover, Institute of Photogrammetry and Geoinformation, GermanyBülent Ecevit University, Zonguldak, TurkeyAn image triplet of Pleiades images covering the area of Zonguldak, Turkey has been investigated. The height to base relation of the first to the last image is just 1:4.5 and for the first and the second image 1:9. This is quite below the usual height to base relation of 1:1.6 for a typical stereo pair of space images. The corresponding small angle of convergence influences the possible vertical accuracy, but images with such a small angle of convergence are more similar to each other as images with larger convergence angles. This enables a better image matching, improving the vertical accuracy and compensating partially the influence of poor intersection geometry. Even over forest areas no matching gaps occurred. Height models are generated with different base configurations and compared with a reference height model. Pleiades images are distributed with 50cm ground sampling distance instead of the physical size of 70cm, the image quality justifies this zooming and also the geometric results are in the range of other space images with originally 50cm GSD. The image orientation by bias corrected Rational Polynomial Coefficients (RPC) is leading with more as 160 ground control points (GCP) to root mean square (RMS) differences slightly below 1.0 GSD of the distributed images (0.5m GSD). Only negligible systematic errors have been identified. With the combination of the first and last image a standard deviation of the generated height model of 1.6m, respectively for flat terrain close to 1.0m has been reached in relation to a reference height model. The small angle of convergence is not as much influencing the height accuracy as according to simple geometric relation.http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-3-W2/81/2015/isprsarchives-XL-3-W2-81-2015.pdf |
| spellingShingle | K. Jacobsen H. Topan DEM GENERATION WITH SHORT BASE LENGTH PLEIADES TRIPLET The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | DEM GENERATION WITH SHORT BASE LENGTH PLEIADES TRIPLET |
| title_full | DEM GENERATION WITH SHORT BASE LENGTH PLEIADES TRIPLET |
| title_fullStr | DEM GENERATION WITH SHORT BASE LENGTH PLEIADES TRIPLET |
| title_full_unstemmed | DEM GENERATION WITH SHORT BASE LENGTH PLEIADES TRIPLET |
| title_short | DEM GENERATION WITH SHORT BASE LENGTH PLEIADES TRIPLET |
| title_sort | dem generation with short base length pleiades triplet |
| url | http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XL-3-W2/81/2015/isprsarchives-XL-3-W2-81-2015.pdf |
| work_keys_str_mv | AT kjacobsen demgenerationwithshortbaselengthpleiadestriplet AT htopan demgenerationwithshortbaselengthpleiadestriplet |