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( 2012) studied the technologies of procedural modeling of city, interactive procedural modeling of streets, large-scale urban environment based on bottom of buildings in procedural modeling method, which provides a new direction for procedural modeling in city design. The algorithm has been used to generate the procedural models, such as trees, buildings, etc. (2011) put forward a procedural modeling algorithm based on syntax, which by optimizing the possible space to generate the corresponding construction.

By using multiple aerial images, the method can generate single coherent whole building geometric model. (2010) proposed a passive computer vision method with existing maps and aerial data, which can automatically generate3D building model.

(2009) put forward a procedural modeling method of stable masonry building, which plays an important role in the analysis of the historical architecture. And setting up random parameters can produce all kinds of stochastic model, which generated a massive model of the city.

Cityengine roof texture software#

( 2008) make a comprehensive review and pointed out that the CityEngine software is a procedural modeling tool. The algorithm will shape grammar type modeling process and the process of building facade combination of image analysis to derive a sense of layered facade segmentation. ( 2007) proposes a 3D model algorithm with high visual quality, derived from any resolution facade image of the building. 2006), with a new shape grammar syntax CGA can produce high quality architectural model of the geometric details, interact and shape the rules, and perform continuous block modeling for the volume of arbitrary orientation shape. As a result, procedural modeling methods have been developed from L system. After that, more and more scholars get involved in it. Hungary biologist Aristid LinderMayer in 1968 proposed L-System (Lindermayer 1968). Those methods are of low efficiency, and difficult to appropriate to large-scale rapid modeling. 2009 Lorenz 2012 Chen 2012) perform 3D models that consist of one or more polygons model so as to express building geometric feature in details. The traditional modeling methods based on the CAD technology, such as AutoCAD, 3DS Max, Sketchup, (Xu et al. In this paper we consider the campus buildings of Shanghai University as an example for all the discussions and illustrations. Lastly the approach is combined with ArcGIS technology for the geographic information to make the city building models more realistic. 2003) and facade modeling based on images for both analysis and construction. The key innovation of our approach is the introduction of procedural modeling by CGA shape grammar (Stiny 1982 Wonka et al. Consequently, In this paper a procedural approach is proposed which is based on the parametric modeling, CGA modeling rules with high geometric detail and up to a billion polygons in CityEngine. However, a large amount of blurry models in city construction have been done with few details, the viewing experiences are often particularly disappointing and the costs of create process are also very expensive. The creation of building models is a crucial task in the development of successful three-dimensional (3D) virtual city. It is validated that this novel approach of procedural modeling is a significant step forward that reduces a lot of modeling times by CGA shape grammars. Secondly, using facade modeling based on two-dimensional images to generate architectural model as well as creating high geometry details. At first, directly writing computer generated architecture (CGA) shape grammar to complete procedural modeling of building and other objects. It includes following two contents concretely. This approach produces extensive architectural 3D models with high visual quality and geometric details at low cost. In this paper we propose a novel approach of procedural modeling of buildings with CityEngine, which is combined with ArcGIS technology for the geographic information.

Cityengine roof texture how to#

How to find a rapid approach to automatically complete large-scale 3D modeling is a very hot research topic. The traditional ways of modeling generally have common problems such as low efficiency, waste of manpower and time consumption. Large-scale 3D city building models have been widely used in urban planning, intelligent transportation, military simulation and other fields.

Cityengine roof texture series#

IFIP Advances in Information and Communication TechnologyД«ook series (IFIPAICT, volume 467) Abstract