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  1. 四元数和旋转 (Quaternion & rotation)

    四元数 (quaternion)可以看作中学时学的复数的扩充,它有三个虚部。 形式如下: ,可以写成 具有如下性质: 设 , ,则 3.2 共 轭四元数 一个四元数 的共轭 (用 表示)为 一个四元数和它的共轭的积等于 …

  2. 如何形象地理解四元数? - 知乎

    如何形象地理解四元数? 关于 quaternion 的资料(包括网络教程与书籍)已经看过很多,但大脑内无法形成对 quaternion 的形象理解。 请问是否要对群论、四维赋范… 显示全部 关注者 2,577 被浏览

  3. How can one intuitively think about quaternions?

    Oct 19, 2010 · Here is the intuitive interpretation of this. Given a particular rotation axis $\omega$, if you restrict the 4D quaternion space to the 2D plane containing $ (1,0,0,0)$ and $ …

  4. Understanding quaternions - Mathematics Stack Exchange

    May 27, 2020 · Of course adding two quaternions gives a quaternion, so algebraically this is clear. I don't really think it's clear geometrically, however, and with good reason: this is a very exceptional …

  5. 四元数 (Quaternions)

    数学背景 四元数变换 (Quaternion Transforms) 连接两个四元数 矩阵和四元数相互转换 球面线性插值 从一个向量旋转到另一个向量)Rotation from One Vector to Another 1 数学背景 (Mathematical …

  6. rotations - How do you rotate a vector by a unit quaternion ...

    Do one quaternion multiplication and you rotate the circular component just that far around, and the quaternion axis gives you the rest of the location, and the fourth dimension says how far ahead or …

  7. Apply Quaternion Rotation to Vector - Mathematics Stack Exchange

    Oct 27, 2022 · A quaternion can be thought of as a scalar plus a 3D vector (also known as real and imaginary parts). The product of a scalar and a 3D vector is the usual scalar multiplication. The …

  8. Concise description of why rotation quaternions use half the angle

    Aug 5, 2015 · The idea of Hamilton was to find some generalization of this formula for three-dimensional rotations. The quaternions can do such a generalization identifying a $3D$ -vector with a pure …

  9. How to convert a quaternion from one coordinate system to another

    Jun 24, 2022 · I am trying to find a way of converting a quaternion from an arbitrary coordinate system to a fixed coordinate system that is used in my application. I have two different coordinate systems, one …

  10. Real world uses of Quaternions? - Mathematics Stack Exchange

    The quaternion algebra shows there as a way of disentangling two Alamouti coded signals transmitted by a pair of antennas. The advantages come from the fact that even if the signal from one antenna is …