基于增强现实技术的景观交互式系统设计  

Design of landscape interactive system based on Augmented Reality Technology

作　　者：汤文华[1] Tang Wenhua(Xianyang Vocational and Technical College,Xi-Xian New Area,Xianyang Shaanxi 712046,China)

机构地区：[1]咸阳职业技术学院,陕西咸阳712046

出　　处：《自动化与仪器仪表》2022年第6期195-200,共6页Automation & Instrumentation

基　　金：咸阳职业技术学院科学研究基金项目中国古典文学特质在现代园林中的继承与应用研究(2021SKB03);咸阳职业技术学院横向项目:园林景观设计公文写作与文化内涵表达技能培训(H2021-2)。

摘　　要：针对景观交互式系统设计的体验性要求,提出一种增强现实技术的景观交互方法。其中,利用改进的AKAZE算法对图像特征进行提取和匹配提纯,进而获得两张图像上匹配的特征点对的2D坐标;利用AKAZE算法得到的2D坐标,以及结合摄像机标定获得的摄像机内参和畸变参数,对现实场景中特征点的3D坐标进行计算,从而实现户外景观场景的跟踪注册;最后利用3d Max进行三维建模和渲染,实现虚实场景的融合;最后通过系统展示出来。结果表明,在噪声、不作处理和降光条件下,AKAZE算法提取到的图像特征数量最多;同时利用AKAZE+RANSAC+Flann-based对现实场景和虚拟场景的特征点进行匹配提纯,其匹配的数量最多;通过单目SLAM算法的姿态估计,其准确率可到97.5%,高于传统的pnp;最后通过交互界面,可清晰展示现实景观和虚拟景观的融合效果。由此得出,以上构建方法可用于景观体验型设计中,具有一定的工程应用价值。Aiming at the experiential requirements of landscape interactive system design,a landscape interactive method based on augmented reality technology is proposed.Among them,the improved akaze algorithm is used to extract and match the image features,so as to obtain the 2 D coordinates of the matched feature point pairs on the two images;The 3 D coordinates of feature points in the real scene are calculated by using the 2 D coordinates obtained by akaze algorithm and the camera internal parameters and distortion parameters obtained by camera calibration,so as to realize the tracking and registration of outdoor landscape scene;Finally,3 D Max is used for 3 D modeling and rendering to realize the fusion of virtual and real scenes;Finally,it is displayed through the system.The results show that the number of image features extracted by the improved akaze algorithm is the largest under the conditions of noise,no processing and falling light;At the same time,akaze algorithm and improved RANSAC algorithm are used to match and purify the feature points of real scene and virtual scene,and the number of matching is the largest;Through the attitude estimation of monocular SLAM algorithm,its accuracy can reach 97.5%,which is higher than the traditional PNP;Finally,through the interactive interface display,the fusion effect of real landscape and virtual landscape can be clearly displayed.It is concluded that the above construction methods can be used in landscape experience design and have certain engineering application value.

关 键 词：增强现实技术 AKAZE算法 单目SLAM算法 景观交互 三维渲染 

分 类 号：TP392[自动化与计算机技术—计算机应用技术]