Spatial constraint (incompressible): motionConstrain.py, motionConstrainSolver.py
Incompressible constraint has two mode and two regular
Modes: displacementWise (ICP-disp, default), velocityWise (ICP-velc)
Regulars: norm (default) and greed
postProcessBSF.py is the assembly of some useful functions for Bspline-Fourier (BSF) model
If your default python is python3: pip install motionConstrain