أتمتة توليد النماذج الرقمية ثلاثية الأبعاد للسمات المدنية في بيئة نظم المعلومات الجغرافية ثلاثية الأبعاد

الموضوعات

علوم تطبيقية وتكنولوجية

روابط وملفات

التعريف والنوع

رقم الوثيقة

0a132b1f-7f98-4f96-86e3-5091ade6cbe9

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf text

أسماء الملفات

1958451_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" رياض المصري","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"أسامة درويش","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

Arabic

المصدر والدورية

اسم المصدر

أتمتة توليد النماذج الرقمية ثلاثية الأبعاد للسمات المدنية في بيئة نظم المعلومات الجغرافية ثلاثية الأبعاد

المحتوى والصفحات

عدد الصفحات

207

ترجمة الملخص

The increasing need for the three dimensional data in the urban environment required developing methods for building large scale digital urban model. The areal photogrammetry is considered one of the most important methods used in gathering the spatial data used in generating digital three dimensional urban models in topographic scales (LoD0, LoD1, LoD2). Until the moment, the role of GIS was limited to display three dimensional models through the extrusion of the two dimensional surfaces in the third direction (Z), using the Z value stored in the attribute table. But while this simple trick can be accepted in small scale urban models, GIS, in urban environment with large topographic scales (1:500- 1:5000), needs inevitably to be supported by 3D Computer-Aided Design systems (e.g. 3D Studio, 3D Max, Sketch Up) in order to model the details of the elements composing the urban models, especially the built up blocks. This thesis concluded to an automatic algorithm to generate urban models developed within the GIS environment. This algorithm will, hopefully, contribute in the following aspects: Applying three dimensional geometrical and topological adjustments and processing on the raw topographic data (roof envelops layer) that preserve the topographic (horizontal and vertical) accuracy of the urban model to be generated in the second stage. Automatically generating the urban model’s two basic elements: the first element represents the built up blocks (roof, walls and basement) regardless of the geometrical shape of the roof (simple and complex planar roofs, curved roofs and hybrid roofs). These blocks are then synthesized through spatial relationships within the geodatabase. While the second element represents a functional ground surface (DTTM: Digital Thematic Terrain Model) that respects the correct geometrical and topological superimposition of the built up blocks. The methodology used in this thesis is characterized by two advantages: first it fulfills the need for an automated technique for generating the urban model. And second it offers the possibility of upgrading GIS from 2.5 D space to a full 3D space, so GIS would no longer be limited to the end user functions, but rather it will participate in preparing and generating the urban model.

كلمات الباحثين

Delaunay triangulation, Digital 3D Urban Model, Digital Areal Photogrammetry, Geographic Information System (GIS, Level of Details (LoD), spatial relational database, المساحة التصويرية الجوية, النماذج العمرانية الرقمية ثلاثية الأبعاد, تثليت دولوني, قواعد البيانات المكانية العلائقية, مستوي تمثيل التفاصيل LoD, نظم تصميم بمعونة الحاسب, نظم معلومات جغرافية

إشراف وإعداد

الإشراف

رياض المصري

الإعداد

أسامة درويش

الاقتباسات الببليوغرافية