stir::QuadraticPotential< elemT > Class Template Reference

Implementation of the Quadratic penalty potential. More...

#include "stir/recon_buildblock/GibbsQuadraticPenalty.h"

Public Member Functions
__host__ __device__ double	value (const elemT &val_center, const elemT val_neigh, int z, int y, int x) const
	Method for computing the potential value.
__host__ __device__ double	derivative_10 (const elemT val_center, const elemT val_neigh, int z, int y, int x) const
	Method for computing the first derivative with respect to val_center.
__host__ __device__ double	derivative_20 (const elemT val_center, const elemT val_neigh, int z, int y, int x) const
	Method for computing the second derivative with respect to val_center.
__host__ __device__ double	derivative_11 (const elemT val_center, const elemT val_neigh, int z, int y, int x) const
	Method for computing the mixed second derivative.
void	initialise_keymap (KeyParser &parser)
	Method for setting up parsing additional parameters.
void	set_defaults ()
	Set default values for potential-specific parameters.

Static Public Member Functions
static bool	is_convex ()
	method to indicate whether the the prior defined by this potential is convex

Detailed Description

template<typename elemT>
class stir::QuadraticPotential< elemT >

Implementation of the Quadratic penalty potential.

The prior energy is:

where:

• and are pixel values at positions and
• are distance-dependent weights
• provides spatially-varying penalty weights (optional)

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The documentation for this class was generated from the following file:

• /home/sirfuser/devel/STIRdistrib/STIR/src/include/stir/recon_buildblock/GibbsQuadraticPenalty.h