一种改进720°全景相机底部图像拼接方法  

Improved bottom image mosaic method of 720°panoramic camera

作　　者：徐一帆 王新华 张广[1] 王少鑫[1] 李明达 穆全全[1] 宣丽[1] 李大禹[1] XU Yi-fan;WANG Xin-hua;ZHANG Guang;WANG Shao-xin;LI Ming-da;MU Quan-quan;XUAN Li;LI Da-yu(State Key Laboratory of Applied Optics, Changchun Institute of Optics,Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;University of Chinese Academy of Sciences, Beijing 100049, China;School of Compute Science, Northeast Electric Power University, Jilin 132012, China;Rural Economic Information Center of Jilin Province, Changchun 130033, China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,应用光学国家重点实验室,吉林长春130033 [2]中国科学院大学,北京100049 [3]东北电力大学计算机学院,吉林吉林132012 [4]吉林省农村经济信息中心,吉林长春130033

出　　处：《液晶与显示》2021年第10期1412-1419,共8页Chinese Journal of Liquid Crystals and Displays

基　　金：吉林省科技厅重点科技研发项目(No.20180201043GX);长春市科技局“双十工程”重大科技攻关项目(No.18SS003);省院合作专项资金项目(No.2019SYHZ0015);吉林省教育厅科学技术研究项目(No.JJKH20210115KJ)。

摘　　要：针对支架等遮挡物对720°全景相机底部图像造成遮挡的问题,本文提出了一种基于分步拍摄的消除底部支架遮挡方法。通过对侧面、顶部一次拍摄和对底部两次拍摄消除底部遮挡。在此基础上,针对侧面、顶部、底部图像亮度不一致问题进行了优化。基于全局的匀色算法会导致不同区域的图像互相影响,造成匀色结果的偏差,提出了一种基于区域生长法图像分割的Wallis匀色算法。实验结果表明,本文方法能够消除底部图像遮挡;使用本文算法匀色,图像颜色差异较使用基于全局算法减小59.3%。Aiming at the problem that brackets occlude the bottom image of a 720°panoramic camera,a method for eliminating the occlusion of the bottom bracket based on step-by-step shooting is proposed.The bottom occlusion is eliminated by shooting the side and top once and shooting twice on the bottom.On this basis,the inconsistency of image brightness are optimized on the side,top,and bottom.The global uniformity algorithm can cause images in different regions to influence each other,causing deviations in the uniformity results.Therefore,a Wallis uniform color algorithm based on region growing method is proposed for image segmentation.The experimental results show that the method in this paper can eliminate the bottom image occlusion.Using the algorithm in this paper to even color,the image color difference is reduced by 59.3%compared with the global algorithm.

关 键 词：全景相机 全景图像拼接 匀色算法 

分 类 号：P235[天文地球—摄影测量与遥感] TP391.4[天文地球—测绘科学与技术]