Invariants (QDMI) in uniform lattice named: Quaternion Tchebichef Moment Invariants
(QTMI), Quaternion Krawtchouk Moment Invariants (QKMI), and Quaternion Hahn Moment
Invariants (QHMI), for hand gesture-based sign language recognition. For this purpose, we
present briefly the principles of those moment invariants. Then, we test them on several
datasets that contain challenging attributions, with regard to invariability and recognition …