Geometric Analysis of Worldview-2 Geo-referenced Image Containing Mostly Sea

Büyüksalih G., Gazioğlu C.

IV International Symposium on Applied Geoinformatics, Wroclaw, Polonya, 8 - 10 Mayıs 2024, ss.48

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Wroclaw
  • Basıldığı Ülke: Polonya
  • Sayfa Sayıları: ss.48
  • İstanbul Üniversitesi Adresli: Evet

Özet

A WorldView-2 (WV2) GeoTIFF image was ordered for the bathymetry work around the Tavsan Island which is the smallest island of Istanbul (previously known as Prince Islands) located in the Sea of Marmara, southeast of Istanbul city. The WV-2 image itself includes just a very small part of the land, but some islands. The geometric definition of the GeoTIFF image was not clear, and therefore needed to be investigated. The image was provided along with Rational Polynomial Coefficients (RPC). For the orientation the RPC-solution, 3D-affine transformation and the direct GeoTIFF with Ground Control Points (GCP) from Google Earth were analyzed. We realized that the correct handling requires orientation through 3D-affine transformation. The image geometry is the base of the following marine application. Bathymetric information can be based on stereo image combination, gray values of the water surface and wave structures.