sigpy.prox.L1Proj

class sigpy.prox.L1Proj(shape, epsilon)

Proximal operator for l1 norm projection.

\[\min_x \frac{1}{2} \| x - y \|_2^2 + 1\{\| x \|_1 < \epsilon\}\]

Parameters:

• shape (tuple of ints) – input shape.
• epsilon (float) – regularization parameter.

__init__(shape, epsilon)

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

Methods

__init__(shape, epsilon)

Initialize self.