基于双目鱼眼相机的柱状投影全景行车记录仪
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上海大学通信与信息工程学院 上海 200072

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TP751; TN05

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Cylindricalprojection for panoramic driving recorder based on binocular fisheye camera
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School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China

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    摘要:

    针对全景行车记录场景,利用2个相背对放置的鱼眼相机所拍摄的视频拼接得到全景视频。首先基于OcamCalib对鱼眼相机进行标定,通过鱼眼图像的柱面映射,实现畸变校正而得到柱面图像,对两帧柱面图像进行SIFT特征点提取,用RANSAC算法去除误匹配并求解两张图像间的单应性矩阵,最后用线性加权法融合两帧柱面图,得到全景图。本实验使用柱面投影,符合人眼的视觉特效,并且相对于平面投影,保留了更多的视场信息,能够帮助驾驶员观察到更多的重要信息。

    Abstract:

    In this paper, for the scene of panoramic driving recorder, we obtain a panoramic video using two video streamings taken by an opposite pair of fixed binocular fisheye cameras. We calibrate the parameters of fisheye camera and correct distorted images using a cylindrical mapping model of perspective projection. Then we extract the SIFT features for two frames of corrected image and remove mismatching points as well as figure out a homography matrix using the RANSAC algorithm. Finally, we use the linear weighted fusion method between the two frames of cylindrical image to get a panoramic image. In this experiment, we use cylindrical projection which is consistent with human visual characteristics. And comparing with perspective projection, cylindrical projection reserves more information of view which can help drivers to observe more important information.

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李剑,曾丹,张之江,朱沁怡.基于双目鱼眼相机的柱状投影全景行车记录仪[J].电子测量技术,2017,40(10):139-142

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  • 在线发布日期: 2017-12-05
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