proximal_huber

odl.solvers.nonsmooth.proximal_operators.proximal_huber(space, gamma)

Proximal factory of the Huber norm.

Parameters:

spaceTensorSpace

The domain of the functional

gammafloat

The smoothing parameter of the Huber norm functional.

Returns:

prox_factoryfunction

Factory for the proximal operator to be initialized.

See also

odl.solvers.default_functionals.Huber

the Huber norm functional

Notes

The proximal operator is given by given by the proximal operator of 1/(2*gamma) * L2 norm in points that are <= gamma, and by the proximal operator of the l1 norm in points that are > gamma.