@INPROCEEDINGS{RenAbs2011, author = "Quentin Rentmeesters and P.-A. Absil", title = "Algorithm comparison for Karcher mean computation of rotation matrices and diffusion tensors", year = 2011, booktitle = "Proceedings of the 19th European Signal Processing Conference (EUSIPCO 2011)", pages = "2229-2233", publisher = "EURASIP", issn = "2076-1465", }