摘要
探究一种有效的湿地景观模型构建方法,能够提高模型构建配准时间,提高收敛性,提高模型构建效率,在实际应用中具备重要的现实意义。针对当前方法在对湿地景观区进行规划设计时,由于城市化和生态环境变化的影响导致湿地景观模型构建时存在模型构建冗余度较高,模型构建的繁杂度增加,设计效果较差等问题,提出一种基于云点融合的湿地景观三维模型构建方法,通过计算湿地景观区的总面积、斑块密度、斑块形状指数和平均斑块分维数,获得湿地景观格局指数。计算三维湿地景观云融合变换的最小函数,利用该函数计算三维平移变换量、三维模型的旋转矩阵和三维模型的缩放因子,变换构建湿地景观区三维模型。仿真结果证明,上述方法可以减小误差、降低配准时间、提高收敛性、降低冗余度、增强湿地景观区三维模型构建的整体效果。
An effective method for constructing the wetland landscape model can improve the registration time of model construction,the astringency and the construction efficiency. This article puts forward a method for constructing the three-dimensional model of wetland landscape based on cloud point fusion. At first,this research obtained the pattern index of wetland landscape by calculating the total area of wetland landscape,patch density,patch shape index and average patch fractal dimension. Then,our research calculated the minimum function of cloud fusion transformation of three-dimensional wetland landscape,which was used to calculate the converted quantity of three-dimensional translation,the rotation matrix of three-dimensional model and the scaling factor of three-dimensional model.Finally,the research built the three-dimensional model of wetland landscape area. Simulation results show that the method reduces error and registration time. Meanwhile,this method improves convergence and reduces redundancy,which enhances the overall effect of constructing three-dimensional model of wetland landscape area.
引文
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