Abstract

Author:

Innocent E. Bello, Irabor Aisabokhale, Ibrahim Sufiyan

Doi: 10.26480/magg.02.2025.81.87

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Efforts toward monitoring crimes and handling security issues require a well articulated strategy that is bankable and database-driven. This study is, therefore, aimed at examining the efficacy of deploying a GIS-based immersive 3D cartographic simulation in mapping and evaluating educational landuse for ease of territorial governance. This became necessary in-view of the need to meet the challenges of increasing security challenges in campuses. The need to cartographically model, visualize and explore security data in Three Dimensional (3D) space is becoming widely recognized as being the closest model to reality with the capabilities to build, visualize, and analyze georeferenced geographic data for decision making. This study, adopted the 3D modeling for built environment of Obafemi Awolowo University, Ile-Ife, State of Osun, Nigeria using elevation data from IKONOS satellite imagery base dataset. ArcGIS, Google Sketchup and Revit architectural software were used to generate building footprints from the satellite imagery, mapping the visibility analysis for the placement of security facilities such as watch tower for ease of security management. Building footprints were extruded to the required heights and draped onto the 3D model image map to project a more realistic visualization. The study reveals that line of sight (visibility) analysis proves to be the most obvious 3D analysis for 3D models as it builds on similar concepts for creation of perspective views, the core of city model visualization. The 3D GIS also supplies analytical functions commonly unavailable in CAD programs to evaluate viewshed and perform line of sight analysis. This culminates into campus animation using animation manager in Arc Scene environment. The Senate building was found to be the highest building with 8 floors of 24m height. The Result also indicated undulating nature of the terrain which plays a significant role in spatial inter-visibility. Consequently, this new 3D security monitoring is necessary in planning for security operatives and built environment for infrastructure management.