Description Usage Arguments References See Also Examples
Logm(P, Q)
computes the projection of a Hermitian PD matrix Q
in the manifold of HPD matrices
equipped with the affine-invariant Riemannian metric to the tangent space attached at the Hermitian PD matrix
P
via the logarithmic map as in e.g., \insertCitePFA05pdSpecEst. This is the unique inverse of
the exponential map Expm
.
1 | Logm(P, Q)
|
P |
a Hermitian positive definite matrix. |
Q |
a Hermitian positive definite matrix (of equal dimension as |
Pennec, X. (2006). Intrinsic statistics on Riemannian manifolds: Basic tools for geometric measurements. Journal of Mathematical Imaging and Vision 25(1), 127-154.
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