V2EX epipole

Epipole

Definition / 释义

极点(极线几何):在双目视觉/立体几何中,一幅图像中“另一台相机光心(或视点)在该图像平面上的投影点”。它是所有极线(epipolar lines)在图像上汇聚的点。该词主要用于计算机视觉与摄影测量等领域。

Pronunciation / 发音

/ppol/

Examples / 例句

The epipole is where all epipolar lines meet in the image.
极点是图像中所有极线相交汇聚的地方。

After calibrating the two cameras, we computed the fundamental matrix and located the epipole to visualize the epipolar geometry.
在标定两台相机后,我们计算了基础矩阵并定位极点,用来可视化极线几何关系。

Etymology / 词源

epi- 意为“在……之上/靠近”,**-pole** 与“极点/轴端”相关(可联想到“pole”表示“极”)。在几何语境中,该词用来表达与“极线系统”相关的“关键汇聚点”,因此译作“极点”。

Related Words / 相关词

Notable Works / 作品例证

  • Richard Hartley & Andrew ZissermanMultiple View Geometry in Computer Vision》(多视图几何经典教材,系统使用 epipole 一词讨论极线几何)
  • Olivier FaugerasThree-Dimensional Computer Vision: A Geometric Viewpoint》(从几何视角讲解三维视觉,包含 epipole 的核心定义与应用)
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