arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1106.6341cs.CVcs.AI
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基于视觉的导航III:全方位光流和数字地形图的位姿和运动

Vision-Based Navigation III: Pose and Motion from Omnidirectional Optical Flow and a Digital Terrain Map

Technion - Israel Institute of Technology(以色列理工学院)

Ronen Lerner, Oleg Kupervasser, Ehud Rivlin

摘要:

提出了一种利用全方位图像和数字地形图中的相应特征进行姿态和运动估计的算法。在以前的文件中,这样的算法被认为是规则的相机。使用数字地形(或数字高程)地图(DTM/DEM)作为全局参考,可以恢复相机的绝对位置和方向。为了做到这一点,DTM被用来制定两个连续帧中的相应特征之间的约束。在本文中,这些约束条件进行了扩展,以处理非中心投影,因为是与许多全向系统的情况下。全向数据的利用,以提高导航算法的鲁棒性和准确性。通过两种全向捕获系统的实验验证了该算法的可行性。第一种是多折射相机,而第二种是折反射相机。

英文摘要:

An algorithm for pose and motion estimation using corresponding features in omnidirectional images and a digital terrain map is proposed. In previous paper, such algorithm for regular camera was considered. Using a Digital Terrain (or Digital Elevation) Map (DTM/DEM) as a global reference enables recovering the absolute position and orientation of the camera. In order to do this, the DTM is used to formulate a constraint between corresponding features in two consecutive frames. In this paper, these constraints are extended to handle non-central projection, as is the case with many omnidirectional systems. The utilization of omnidirectional data is shown to improve the robustness and accuracy of the navigation algorithm. The feasibility of this algorithm is established through lab experimentation with two kinds of omnidirectional acquisition systems. The first one is polydioptric cameras while the second is catadioptric camera.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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