In order to ensure the rationality of landscape design, it is of great practical significance to simulate the planning effect. Aiming at the problems of two traditional landscape planning effect simulation systems, a new landscape planning effect simulation system was designed based on virtual reality technology. The overall framework of the system is composed of user layer, application layer and display layer. According to the system frame structure, hardware such as acquisition equipment, main control equipment, output and display equipment are selected; according to the system framework structure, the system software is designed to run the main program. In addition, this paper also based on 3D image processing technology landscape design system. In the design process, 3D landscape image can be preprocessed to remove noise information and redundant information, and 3D landscape image feature enhancement method is used to realize 3D landscape image feature enhancement and improve the clarity of landscape design image. Combined with the example of garden green space, according to the parametric plant modeling method, the morphological structure parameters of green plants are obtained, and the three-dimensional models of various plant modeling are established; the rules of parametric description of plant spatial layout are adopted, based on the open scene graph rendering engine, and the oculus rift virtual reality equipment is integrated to realize the virtual construction and display of three-dimensional garden vegetation landscape. The results show that the design effect of the system is very clear and of good quality. It has a high score in the design of courtyard landscape and garden landscape, and the system has low application cost, low energy consumption and high operation efficiency.

为了保证景观设计的合理性，模拟规划效果具有重要的现实意义。针对两个传统的景观规划效果模拟系统存在的问题，设计了一种基于虚拟现实技术的景观规划效果模拟系统。系统的总体框架由用户层，应用层和显示层组成。根据系统框架结构，选择采集设备，主控设备，输出显示设备等硬件；根据系统框架结构，设计系统软件来运行主程序。此外，本文还基于3D图像处理技术的景观设计系统。在设计过程中，可以对3D景观图像进行预处理，去除噪声信息和冗余信息，采用3D景观图像特征增强方法实现3D景观图像特征增强，提高景观设计图像的清晰度。结合园林绿地实例，根据参数化植物建模方法，获得了绿色植物的形态结构参数，建立了各种植物建模的三维模型。在开放场景图形渲染引擎的基础上，采用了植物空间布局的参数化描述规则，并集成了oculus rift虚拟现实设备，实现了三维园林植被景观的虚拟构建和显示。结果表明，该系统的设计效果非常明显，质量良好。该系统在庭院景观和园林景观设计中得分很高，系统应用成本低，能耗低，运行效率高。