环状全景图展开技术的研究  

Research on Circular Panorama Development Technology

作　　者：孟竹 朴燕[1] 毛雅棋 MENG Zhu;PIAO Yan;MAO Ya-qi(School of Electronics and Information Engineering,Changchun University of Science and Technology,Changchun 130022)

机构地区：[1]长春理工大学电子信息工程学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2021年第2期86-92,共7页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：吉林省科技支撑项目(20180201091GX);吉林省科技创新中心项目(20180623039TC)。

摘　　要：针对普通相机视野小,在定位、监控等过程中不能得到全局视场的问题,利用双曲面折反射全景摄像头获取360°环状全景图。为满足人们的观察习惯,将环状全景图展开为二维圆柱面矩形图。目前,针对环状全景图展开运用最多的是同心圆近似展开法,但是由于此方法计算量相对较大,且运行速度慢。因此,提出三角函数展开法,此方法可直接由环状全景图展开为二维矩形图,计算量小且运行速度快。首先,利用折反射全景摄像头获取360°环状全景图;其次,获取全景图中心点以及展开后的矩形图像的数据;最后,利用三角函数进行展开。该方法的系统结构简单、成本低,且运行速度较快,改善了图像分辨率低的问题。In view of the problem that the common camera has a small field of view and cannot get the global field of view in the process of positioning and monitoring,the hyperboloid catadioptric panoramic camera is used to obtain 360°circular panorama.In order to meet people's observation habit,the circular panorama is developed into a two-dimensional cylindrical rectangle.At present,the concentric circle approximate expansion method is the most widely used method for the development of circular panorama because of the relatively large amount of calculation and slow running speed of this method.Therefore,in this paper,a trigonometric function expansion method is proposed,which can be directly expanded from a circular panorama to a two-dimensional rectangular image,with small calculation and fast operation.Firstly,the panorama of 360°circle is obtained by the catadioptric panoramic camera.Secondly,the data of the central point of panorama and the expanded rectangle image are acquired.Finally,the trigonometric function is used to expand.The system structure of this method is simple,the cost is low,and the operation speed is fast,which improves the problem of low image resolution.

关 键 词：环状全景图 三角函数展开法 同心圆近似展开法 折反射镜头 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]