A lot of that group's publications are listed here, many involving optical flow: http://web.archive.org/web/20161014025823/http://gpu4vision....
Maybe this one from 2007: https://www-pequan.lip6.fr/~bereziat/cours/master/vision/pap...
Maybe this one from 2007: https://www-pequan.lip6.fr/~bereziat/cours/master/vision/pap...
[0]: https://lmb.informatik.uni-freiburg.de/Publications/2010/Bro...