* Updated version of the paper published in the workshop HBU2019. The
differences with the published version are a few small corrections, mainly
misleading notations for the distance function on p. 4, and missing square
root in the expression for "d", in the Thm. on p. 4. Noticeable changes w. r.
t. v1 and v2 on arxiv, please use this version instead Access Paper or Ask Questions
* A preliminary version of this work appeared in "Otberdout N, Kacem A,
Daoudi M, Ballihi L, Berretti S. Deep Covariance Descriptors for Facial
Expression Recognition, in British Machine Vision Conference 2018, BMVC 2018,
Northumbria University, Newcastle, UK, September 3-6, 2018. ; 2018 :159."
arXiv admin note: substantial text overlap with arXiv:1805.03869 Access Paper or Ask Questions
* Under minor revisions in IEEE Transactions on Pattern Analysis and
Machine Intelligence (T-PAMI). A preliminary version of this work appeared in
ICCV 17 (A Kacem, M Daoudi, BB Amor, JC Alvarez-Paiva, A Novel Space-Time
Representation on the Positive Semidefinite Cone for Facial Expression
Recognition, ICCV 17). arXiv admin note: substantial text overlap with
arXiv:1707.06440 Access Paper or Ask Questions