Measuring camera translation by the dominant apical angle
Measuring camera translation by the dominant apical angle
复制标题
通过主顶角测量相机平移
DOI：
10.1109/cvpr.2008.4587531
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
B. Leibe
中科院分区：
文献类型：
--
作者：
A. Torii;M. Havlena;T. Pajdla;B. Leibe
本文提出了一种从两幅图像中相对测量摄像机平移量的方法。我们证明了平移量可以通过最常见的顶点角（摄像机中心从重建场景点的角度看到的角度）可靠地测量一般场景和平面场景。模拟实验表明，主顶点角是真实摄像机平移长度的线性函数。在实际实验中，我们证明了通过跳过运动过小的图像对，我们可以可靠地从运动中初始化结构，计算精确的摄像机轨迹以校正图像，并使用地平面约束识别手持视频序列中的行人。
This paper provides a technique for measuring camera translation relatively w.r.t. the scene from two images. We demonstrate that the amount of the translation can be reliably measured for general as well as planar scenes by the most frequent apical angle, the angle under which the camera centers are seen from the perspective of the reconstructed scene points. Simulated experiments show that the dominant apical angle is a linear function of the length of the true camera translation. In a real experiment, we demonstrate that by skipping image pairs with too small motion, we can reliably initialize structure from motion, compute accurate camera trajectory in order to rectify images and use the ground plane constraint in recognition of pedestrians in a hand-held video sequence.