基于虚拟现实技术的三维场景图像表面重建算法  

Surface reconstruction algorithm of 3D scene image based on virtual reality technology

作　　者：王震[1,2] 盖孟 许恒硕 WANG Zhen;GAI Meng;XU Heng-shuo(School of Art and Design,Shenyang Ligong University,Shenyang 110159,China;Beijing Virtual Simulation and Visualization Engineering Technology Research Center,Peking University,Beijing 100871,China;Graphics and Interactive Technology Laboratory,Peking University,Beijing 100871,China;College of Computer Science,Nankai University,Tianjing 300071,China)

机构地区：[1]沈阳理工大学艺术设计学院,沈阳110159 [2]北京大学北京市虚拟仿真与可视化工程技术研究中心,北京100871 [3]北京大学图形与交互技术实验室,北京100871 [4]南开大学计算机科学学院,天津300071

出　　处：《吉林大学学报（工学版）》2022年第7期1620-1625,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金重点项目(61632003)。

摘　　要：针对传统三维场景图像表面重建特征点匹配精度不高、计算复杂等实际问题,提出基于虚拟现实技术的三维场景图像表面重建算法。使用小波分解处理图像纹理信息,量化编码图像,并把视觉点和图像的间距作为度量值,挑选恰当临界值完成图像压缩,剔除三维场景图像冗余数据;计算图像中的启发式信息,更新信息素矩阵,运用信息素矩阵临界值明确像素点是否为图像边缘点,提取三维场景图像边缘信息;利用虚拟现实设备计算三维场景最小识别距离,推算理论图像投影值与实际投影值偏差,通过偏差值校准图像表面重建像素值,完成高精度三维场景图像表面重建目标。仿真结果表明,所提方法可有效捕捉三维场景图像中的关键特征,重建后的图像分辨率得到显著提升。Aiming at the problems of low matching precision and complex calculation of traditional 3D scene surface reconstruction feature points,a new algorithm based on virtual reality technology is proposed.The image texture information is processed by wavelet decomposition,the image is encoded quantitatively and the distance between the visual points and images is taken as the measurement value.The appropriate critical value is selected to complete image compression and the redundant data of 3D scene image is eliminated.The heuristic information in the image is calculated,the pheromone matrix is updated,the critical value of the pheromone matrix is used to determine whether the pixel point is the edge point of the image,and the edge information of the 3D scene image is extracted.The minimum recognition distance of3D scene is calculated by virtual reality equipment,and the deviation between theoretical image projection value and actual projection value is calculated.The pixel value of image surface reconstruction is calibrated by deviation value,and the surface reconstruction target of high precision 3D scene image is completed.The simulation results show that the proposed method can capture the key features of 3D scene image effectively,and the resolution of reconstructed image is improved significantly.

关 键 词：虚拟现实技术 三维场景 图像表面重建 粒子群 小波分解 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]