基于結(jié)構(gòu)分析的建筑模型合成方法研究
[Abstract]:Digital geometry model has been recognized as a new generation of digital media after digital audio, image and video. It has been widely used in many fields such as industrial manufacture, digital entertainment and so on. The number of shared digital geometric models is growing exponentially. How to effectively reuse the existing model resources has become one of the important issues in this field. The modeling technology based on samples can make use of the existing 3D samples to synthesize the new model, which can not only determine the model style intuitively, but also simplify and accelerate the modeling process. It provides an effective way for the reuse of model resources. It has become one of the hot research topics in the field of digital geometry processing. In this paper, the architecture model is taken as the research object, and the two key technologies involved in the model structure analysis and subsequent model composition are systematically studied and explored by the sample-based modeling method. On this basis, the corresponding prototype system is designed and implemented. The main achievements of the thesis are as follows: 1. In this paper, a method of structure discovery of three-dimensional building model based on transformation space is proposed. In this method, the problem of obtaining the regular structure repetition pattern on the input model is transformed into the problem of obtaining the grid regular pattern in the translational transformation space and then the problem of backward inferring, which can be repeated in the three-dimensional building model to construct the shape of the unit. On the premise of unknown priori information such as size and size, repeat pattern estimation and translation repeat construction unit detection are carried out synchronously to realize the discovery of model structure. The experimental results show that this method can quickly obtain the translational and repetitive structural units in the building model, and lay a solid foundation for the subsequent model synthesis. 2. A model synthesis method based on building single facade synthesis and reconstruction is proposed. This method takes advantage of the structural characteristics that most building models are composed of individual facades, and transforms the problem of building model synthesis into the combinatorial problem of each building with single facade, which is convenient for building model synthesis. The experimental results show that this method can make use of a single sample or multiple samples to generate a variety of architectural models with different styles quickly and efficiently, and provides a new research idea for the optimization and synthesis of the model. 3. Design and implementation of Building-Synthesis system. The system integrates the 3D building model structure discovery method and the model composition method based on building single facade synthesis and recombination, which can not only provide a new modeling method for professionals. And can also provide the corresponding modeling experience for lay-professionals.
【學(xué)位授予單位】:南京大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TU31;TP391.41
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