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3D city model is a digital representation of the Earth's surface and it’s related objects such as building, tree, vegetation, andsome manmade feature belonging to urban area. The demand of 3D city modeling is increasing day to day for variousengineering and non-engineering applications. Generally three main image based approaches are using for virtual 3D citymodels generation. In first approach, researchers used Sketch based modeling, second method is Procedural grammar basedmodeling and third approach is Close range photogrammetry based modeling. Literature study shows that till date, there is nocomplete solution available to create complete 3D city model by using images. These image based methods also havelimitations  This paper gives a new approach towards image based virtual 3D city modeling by using close range photogrammetry. Thisapproach is divided into three sections. First, data acquisition process, second is 3D data processing, and third is datacombination process. In data acquisition process, a multi-camera setup developed and used for video recording of an area.Image frames created from video data. Minimum required and suitable video image frame selected for 3D processing. Insecond section, based on close range photogrammetric principles and computer vision techniques, 3D model of area created. Inthird section, this 3D model exported to adding and merging of other pieces of large area. Scaling and alignment of 3D modelwas done. After applying the texturing and rendering on this model, a final photo-realistic textured 3D model created. This 3Dmodel transferred into walk-through model or in movie form. Most of the processing steps are automatic. So this method iscost effective and less laborious. Accuracy of this model is good. For this research work, study area is the campus ofdepartment of civil engineering, Indian Institute of Technology, Roorkee. This campus acts as a prototype for city. Aerialphotography is restricted in many country and high resolution satellite images are costly. In this study, proposed method isbased on only simple video recording of area. Thus this proposed method is suitable for 3D city modeling.  Photo-realistic, scalable, geo-referenced virtual 3D city model is useful for various kinds of applications such as for planning innavigation, tourism, disasters management, transportations, municipality, urban and environmental managements, real-estateindustry. Thus this study will provide a good roadmap for geomatics community to create photo-realistic virtual 3D city modelby using close range photogrammetry

A new approach towards image based virtual 3D city modeling by using close range photogrammetry