基于三维纹元法的差异景观布局模型仿真  

Simulation of Different Landscape Layout Model Based on Three-Dimensional Schlieren Method

作　　者：张圆圆[1] 刘娟[1,2] ZHANG Yuan-yuan;LIU Juan(Hebei College of Engineering,Shijiazhuang Hebei 050091,China;Hebei Agriculture University,Baoding Hebei 071000,China)

机构地区：[1]河北工程技术学院,河北石家庄050091 [2]河北农业大学,河北保定071000

出　　处：《计算机仿真》2020年第8期462-466,共5页Computer Simulation

摘　　要：传统的二维景观布局法不能满足差异建筑群动态性和随机性的要求,导致得到的景观布局模型与实际情况存在较大差异。为此提出基于三维纹元法的差异景观布局模型。首先获取差异景观目标位置信息,并计算出景观分布密度函数;其次为了保证模型外观相似度,采用邻域比较法选择最佳匹配邻域,再通过三维表面局部扩张确定模型外表纹理分布;最后利用最小二乘法得到景观分布变化系数,获得园林景观的动态预测模型,同时结合Markov构建差异景观布局矩阵,并探究Markov的无后效性与齐次性两个特征,通过两个特征的约束,得到差异景观布局模型。仿真结果证明,上述模型可以准确模拟出差异景观布局特点,布局质量较高。Traditionally,the two-dimensional landscape layout method cannot meet the dynamic and random requirements of differential building groups,so the landscape layout model is quite different from the actual situation.Therefore,a model of landscape layout based on 3D schlieren method was proposed.Firstly,the location information of differential landscape target was obtained and the density function of landscape distribution was calculated.Secondly,the neighborhood comparison method was used to select best matching neighborhood and thus to ensure the similarity of model.And then,the surface texture distribution of model was determined by local expansion of three-dimensional surface.Finally,the change coefficient of landscape distribution was obtained by least square method,and the dynamic prediction model of landscape was built.Combined with Markov,the matrix of differential landscape layout was constructed and the characteristics of Markov such as no aftereffect and homogeneity were explored.Through the constraints of the two characteristics,the model of differential landscape layout was completed.The simulation results show that the proposed model can accurately simulate the different landscape layout characteristics,so the layout quality is high.

关 键 词：三维纹元法 差异景观 布局模型 局部扩张 差异矩阵 

分 类 号：TP921[自动化与计算机技术]