Generic VELO Pattern Recognition

The VELO detector is designed for fast and accurate reconstruction of tracks pointing to the nominal interaction region and assuming VELO being in its closed position. Such tracks are linear in $r-z$ projection and about constant in $\phi$ coordinate. Nevertheless, for various VELO applications this linearity is broken. The Generic Pattern Recognition aims at the reconstruction of such generic tracks, including the case of test-beam events and VELO being in its open position.