sigpy.prox.BoxConstraint

class sigpy.prox.BoxConstraint(shape, lower, upper)

Box constraint proximal operator.

\[\min_{x : l \leq x \leq u} \frac{1}{2} \| x - y \|_2^2\]

Parameters:

• shape (tuple of ints) – input shape.
• lower (scalar or array) – lower limit.
• upper (scalar or array) – upper limit.

__init__(shape, lower, upper)

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(shape, lower, upper)

Initialize self.