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Projective Invariants from Multiple Images: A Direct and Linear Method

机译:来自多个图像的投影不变量:直接和线性方法

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摘要

The projective reconstruction of 3D structures from 2D images is a central problem in computer vision. Existing methods for this problem are usually nonlinear or indirect. In the previous direct methods, we usually have to solve a system of nonlinear equations. They are very complicated and hard to implement. The previous linear indirect methods are usually imprecise. This paper presents a linear and direct method to derive projective structures of 3D points from their 2D images. Algorithms to compute projective invariants from two images, three images, and four images are given. The method is clear, simple, and easy to implement. For the first time in the literature, we present explicit linear formulas to solve this problem. Mathematica codes are provided to demonstrate the correctness of the formulas.
机译:从2D图像投影重建3D结构是计算机视觉中的中心问题。解决该问题的现有方法通常是非线性的或间接的。在以前的直接方法中,我们通常必须求解非线性方程组。它们非常复杂且难以实施。先前的线性间接方法通常不精确。本文提出了一种线性和直接的方法来从其2D图像中导出3D点的投影结构。给出了从两个图像,三个图像和四个图像计算投影不变量的算法。该方法清晰,简单且易于实现。在文献中,我们首次提出了明确的线性公式来解决此问题。提供了Mathematica代码以证明公式的正确性。

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  • 来源
    《Mathematical Problems in Engineering》 |2016年第4期|8523604.1-8523604.14|共14页
  • 作者单位

    Northeastern Univ, Sch Comp Sci & Engn, Shenyang 110819, Peoples R China;

    Northeastern Univ, Sch Comp Sci & Engn, Shenyang 110819, Peoples R China;

    Northeastern Univ, Sch Comp Sci & Engn, Shenyang 110819, Peoples R China;

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