基于滤波反投影算法的全景图像拼接仿真  

Panoramic Image Mosaic Simulation Based on Filtered Back Projection Algorithm

作　　者：刘清雪 LIU Qing-xue(Jilin University of Architecture and Technology,Changchun Jilin 130114,China;School of Information Science and Technology Northeast normal university,Changchun Jilin 130024,China)

机构地区：[1]吉林建筑科技学院,吉林长春130114 [2]东北师范大学信息科学与技术学院,吉林长春130024

出　　处：《计算机仿真》2020年第6期374-378,共5页Computer Simulation

摘　　要：针对传统图像拼接方法存在的计算复杂、拼接结果不精准的问题,提出一种基于滤波反投影算法的全景图像拼接方法。根据滤波反投影的基本原理,求得图像投影函数的数据值,利用傅里叶变换计算得出对应的投影待拼接图像,并对其进行平滑处理,以此加强图像细节。对传统方法得到的角点进行重新检验,通过改进后的Harris方法提取图像特征角点,在待拼接图像的特征角点处运用配准算法,将其变换到同一坐标系内,采用傅里叶变换法将图像特征进行相互匹配,实现全景图像拼接。仿真结果表明:所提算法可以有效解决传统方法存在的问题,并且计算方法简单、耗时短。In order to solve the problems of complex calculation and inaccurate image mosaic results in traditional methods,this article puts forward a method of panoramic image mosaic based on filter back-projection algorithm.According to the basic principle of filtered back-projection,the data of image projection function was obtained.The corresponding projection image was obtained by Fourier transform,and then the image details were strengthened by smoothing.Moreover,the corner points obtained by traditional methods were retested,and the feature corners were extracted by the improved Harris method.The registration algorithm was used to transform the corner points of image into the same coordinate system.Meanwhile,the Fourier transform method was used to match the image features.Finally,the panoramic image mosaic was achieved.Simulation results show that the proposed algorithm can effectively solve the problems in traditional methods.Meanwhile,the proposed algorithm is simple.

关 键 词：滤波反投影算法 全景图像拼接 计算机层析成像 傅里叶变换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]