Generation of DEM from the Topographic Maps

Generation of Digital Topographic Maps of Planetary Bodies

In recent years, the exploration of the solar system was intensified. Several space missions have been planned, launched, or are in operation yet. Some of them are supplied with modern camera experiments: the High Resolution Stereo Camera (HRSC) on Mars Express or the Cassini Imaging Science SubSystem (ISS). Especially HRSC data are well suited to derive Digital Terrain Models and color orthoim...

DEM generation from satellite data

Digital Elevation Models (DEMs) are required for several tasks like generation of orthoimages, flood planning, erosion control, agriculture, generation of contour lines, visibility check, 3D-views and others. Mainly in developed countries DEMs are available, but not in any case like required. DEMs can be generated by traditional photogrammetry based on aerial photos if they are available and no...

Topographic Maps

We call "natural" image any photograph of an outdoor or indoor scene taken by a standard camera. We discuss the physical generation process of natural images as a combination of occlusions, transparencies and contrast changes. This description ts to the phenomeno-logical description of Gaetano Kanizsa according to which visual perception tends to remain stable with respect to these basic operat...

the effect of traffic density on the accident externality from driving the case study of tehran

در این پژوهش به بررسی اثر افزایش ترافیک بر روی تعداد تصادفات پرداخته شده است. به این منظور 30 تقاطع در شهر تهران بطور تصادفی انتخاب گردید و تعداد تصادفات ماهیانه در این تقاطعات در طول سالهای 89-90 از سازمان کنترل ترافیک شهر تهران استخراج گردید و با استفاده از مدل داده های تابلویی و نرم افزار eviews مدل خطی و درجه دوم تخمین زده شد و در نهایت این نتیجه حاصل شد که تقاطعات پر ترافیک تر تعداد تصادفا...

Contour Line Recognition From Scanned Topographic Maps