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.
Keywords
Kaynakça
- Cheng, P., Chaapel, C., 2010, “Pan-sharpening and Geometric Correction WorldView-2 Satellite”, GEOInformatic June 2010, pp. 30-33.
- Dare, P., Pendlebury, N., Frase, C., “Digital Orthomosaics as a Source of Control for Geometrically Correction High Resolution Satellite Imagery”, Proceedings of the 23rd Asian Conference on Remote Sensing, Kathmoandu, Nepal, No. 173, 25-29 November 2002.
- Dial, G. and Grodecki J., "Ikonos Stereo Accuracy Without Ground Control”, ASPRS 2003 Annual Conference Procedings, Anchorage, Alaska, May 2003.
- Grodecki.,J., Dial, G., 2003, “Block Adjustment of High-Resolution Satellite Images Described by Rational Polynomials”, Photogrammetric Engineering & Remote Sensing, Vol.69 (1), pp.59-68, January 2003.
- Hanley, H. B. And Fraser C. S., 2001, “Geopositioning Accuracy of Ikonos Imagery; Indications from 2D Transformations”, Photogrammetric Record, Vol. 17 (98), pp. 317-329.
- Hobi, L.M., Ginzler., C., 2012, “Accuracy Assessment of Digital Surface Models Based on WorldView-2 and ADS80 Stereo Remote Sensing Data”, Sensors, Vol. 12 (5), pp. 6347-6368.
- Kadota, T. and Takagi, M., "Acquisition Method of Ground Control Points For High-Resolution Satellite Imagery", Proceedings of the 23rd Asian Conference on Remote Sensing, Kathmoandu, Nepal, No. 173, 25-29 November 2002.
- Kahveci, M., 2009, “Gerçek Zamanlı Ulusal Sabit GNSS (CORS) Ağları ve Düşündürdükleri”, HKM Jeodezi, Jeoinformasyon ve Arazi Yönetimi Dergisi, Vol. 2009/1 Sayı 100, pp.13-20.
Ayrıntılar
Birincil Dil
İngilizce
Konular
Mühendislik
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
1 Aralık 2016
Gönderilme Tarihi
22 Ağustos 2016
Kabul Tarihi
25 Ekim 2016
Yayımlandığı Sayı
Yıl 2016 Cilt: 4 Sayı: 4