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There are multiple ways to calculate the distance between two quaternions. See [https://math.stackexchange.com/questions/90081/quaternion-distance Stackexchange]. | There are multiple ways to calculate the distance between two quaternions. See [https://math.stackexchange.com/questions/90081/quaternion-distance Stackexchange]. | ||
* <math>\theta = \cos^{-1}(2 | * <math>\theta = \cos^{-1}(2 \langle q_1, q_2 \rangle^2 - 1)</math> | ||
==Spatial Alignment Problem== | ==Spatial Alignment Problem== |