Author(s): Alaa Abdulhadi Abbas and Seraj Foaad Abdulhamza

Abstract: This study focuses on the use of 3D GIS for visualization of the city with special references to Baghdad – Iraq. Datasets of structure large and dense with a spatial coverage of 500km2 was collected using LiDAR integrated drones with a camera where characteristics of the urban areas ranged from 10 to 20 points per meter. The gathered data was quantified to get actual 3D models of all the mentioned objects, which in turn was imported in GIS programs. Consequently, varieties of basic visualization and simple forms of the AAT were used and, in addition, methods of the visualization approaches and the scenario-modeling to take into account the most important components of the city, such as buildings, roads, and the green zones, made the additions to the methodology. Thus, the application of 3D GIS is significantly more effective than 2D GIS while solving the issues related to the management of urban environment as we identified that the data accuracy augmented by 15-20%. Scenario modeling was rather useful as it supplied necessary information to PDEA for the urban improvement projects for which it even illustrates the implication of this tool in increasing the sustainability of the urban central business district. Hence, it can be asserted that, in contrast with the current trends in GIS and the other mapping approaches, 3D GIS provides accurate, ongoing, and real urban analysis, and, therefore, opens up immense application in today’s urbanization and regulation. All these advances in the 3D GIS technology hence have useful information particularly for the urban planner and other specialists in the GIS particularly in such environment as the Baghdad city.

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