场馆局部微损坏数字虚拟再现仿真研究  

Research on Digital Virtual Reproduction Simulation of Local Micro Damage in Venues

作　　者：王璜玉珏 杨真[2] WANG Huang-yujue;YANG Zhen(Chang′an University,Shaanxi Xian Shaanxi 710000,China;Network&Information Center,East China Jiaotong University,Jiangxi Nanchang 330013,China)

机构地区：[1]长安大学,陕西西安710000 [2]华东交通大学网络信息中心,江西南昌330013

出　　处：《计算机仿真》2022年第11期248-252,共5页Computer Simulation

基　　金：陕西省体育局常规课题(课题编号:2021307);江西省教育厅科学技术研究项目(GJJ209928)。

摘　　要：利用目前方法再现体育场馆环境时,忽略了对体育场馆数字全息图的滤波处理,存在场景还原性较差的问题。为此提出基于虚拟现实的场馆局部微损坏数字再现方法。方法首先针对虚拟现实技术的特点,构建了一个虚拟现实系统,达到人机交互的效果,同时在虚拟现实系统中引入可视化技术,将采集的体育场馆局部微损坏数据转换成图像,输入到系统内,实现体育场馆局部微损坏数据的可视化展示;在系统内选取一组可视化数字图像数据,利用傅里叶计算方法获取场馆局部微损坏数字全息图,通过光场强度分布获取数字影像。为了提升数字影像的再现效果,采用拉普拉斯算法对全息图进行去噪处理,实现体育场馆局部微损坏数字影响的再现。实验测试结果表明,不同离焦误差下,影像再现的相位误差均较小,验证了该方法的有效性强、实用性高。At present, some methods ignore filtering the digital hologram of stadium when reproducing the environment of stadium, so the degree of reduction for scene is not ideal.Therefore, this paper puts forward a method of digital reconstruction for local micro damage of stadium based on virtual reality.Firstly, this method built a virtual reality system according to the characteristics of virtual reality technology, thus achieving the human-computer interaction.In the meanwhile, visualization technology was introduced into the virtual reality system.Moreover, the collected data of local micro damage were converted into images and then input into the system, thus achieving the visualization display for these data.Furthermore, a group of visual digital image data was selected from the system, and then Fourier algorithm was used to calculate digital hologram of local micro damage.After that, digital images were obtained by optical field intensity distribution.In order to improve the reappearance of digital image, Laplace algorithm was adopted to remove noise from holograms.Finally, the digital reconstruction of local micro damage in stadium was achieved.Experimental results show that the phase errors of image reproduction are always small under different defocusing errors, which verifies high effectiveness and practicability of the method.

关 键 词：虚拟现实 体育场馆 局部微损坏 数字再现 滤波处理 

分 类 号：TJ765.9[兵器科学与技术—武器系统与运用工程]