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INVESTIGATION OF SPATIAL ACCURACY OF HIGH-RESOLUTION (50cm) WORLDVIEW-2 SATALLITE IMAGES

Worldview-2 (50cm) uydu görüntüsünün konumsal doğruluğunun araştırılması
Authors: Mutluoğlu, Ömer; Yakar, Murat; Yılmaz, Hacı Murat;

INVESTIGATION OF SPATIAL ACCURACY OF HIGH-RESOLUTION (50cm) WORLDVIEW-2 SATALLITE IMAGES

Abstract

Nowadays, Very High Resolution Satellite (VHRS) images have been used for many applications intensively. Using of the digital satellite images in relevant approaches may give more accurate ideas about the researched fields. Besides, different methods could be used for geospatial informations from relevant digital data in many disciplines. The most importance reason of using the maps, which are derived from VHRS images, is accuracy of data. To obtain maps from VHRS images or use VHRS images as map, the VHRS images require rectification. For an accurate rectification process, Ground Control Points (GCPs) must be marked in the field. In this study, spatial accuracy of the stereo WorldView-2 satellite image (0.5 m resolution) was investigated at a test area. For this, 31 GCP points were established. These points were used as controls and check point. Block adjustment was made using a different number of control and check points. The impact of the number of control points upon the adjustment results was also investigated. As a result of adjustment using a 5-point control and 26 check points; root mean square error in the 53 cm x direction, 17 cm y direction, 63 cm in z-direction for control points have been obtained. For check points, 55 cm x direction, 26 cm y direction and z direction 65 cm root mean square error were found. Also coordinates obtained from the stereo model and the field determined by the geodetic methods coordinates of points were compared. The average position error of a point is 48 cm according to comparison results.

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Turkey
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Keywords

Check point, Çözünürlük, Çok yüksek çözünürlüklü uydu görüntüsü, Denetleme noktası, Rektifikasyon, WorldView-2, VHRS, WorldView-2, Ground Control Point, Check Point, Rectification, Resolution, VHRS, Rectification, Resolution, Ground control point, Yer control noktası

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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