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Prof. Ayman Mohamed Rashad Elshehaby :: Publications:

Different DEM techniques for orthophotography
Authors: Prof. Dr.Rifaat Ismaiel; Dr. Ayman El-shehaby; Eng. Lamyaa Gamal El- deen Taha
Year: 2004
Keywords: DEM techniques, orthophotography
Journal: ng. Research Journal, Shoubra Faculty of Engineering, Zagazig University, Banha Branch,
Volume: 1
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: Local
Paper Link: Not Available
Full paper Not Available
Supplementary materials Not Available

The generation of orthophoto from remotely sensed images, such as aerial photos, satellite images and airborne scanning images is an important task for various mapping applications. The accuracy of digital elevation model (DEM) data is one of the most important points, which affects the precision of the final orthophotos. So that we want to study the effect of relief on the planimetry .In order to obtain the best resulted Digital orthophoto, which can be used to produce planimetric map. In this paper we will study the generation of digital orthophoto using different DEM approaches. Such as, (field observations using GPS+AT), Photogrammeteric techniques (analytical & digital). This will be followed by some experiments about the quality of the different DEM to get the best results concerning the digital Orthophoto.

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