DICe::VSG_Strain_Post_Processor Class Reference

A specific instance of post processor that computes vurtual strain gauge (VSG) strain. More...

#include <DICe_PostProcessor.h>

Inheritance diagram for DICe::VSG_Strain_Post_Processor:

Public Member Functions
	VSG_Strain_Post_Processor (const Teuchos::RCP< Teuchos::ParameterList > &params)
virtual	~VSG_Strain_Post_Processor ()
	Virtual destructor.
virtual void	set_params (const Teuchos::RCP< Teuchos::ParameterList > &params)
	Set the parameters for this post processor.
virtual void	pre_execution_tasks ()
	Collect the neighborhoods of each of the points.
virtual int_t	strain_window_size ()
	See base clase docutmentation.
virtual void	execute ()
	Execute the post processor.
void	initialize_neighborhood (const scalar_t &neighborhood_radius)
	See base class documentation.
std::vector< DICe::field_enums::Field_Spec > *	field_specs ()
	See base class documentation.
Public Member Functions inherited from DICe::Post_Processor
	Post_Processor (const std::string &name)
	Default constructor. More...
virtual	~Post_Processor ()
	Pure virtual destructor.
void	initialize (Teuchos::RCP< DICe::mesh::Mesh > &mesh)
void	initialize_neighborhood (const scalar_t &neighborhood_radius)
void	set_field_names (const Teuchos::RCP< Teuchos::ParameterList > &params)
	Set the field names.
void	set_stereo_field_names ()
	Default to the model fields for post processors.
void	update_current_frame_id (const int_t frame_id)
	update the id of the current frame
std::vector< DICe::field_enums::Field_Spec > *	field_specs ()
	Return a pointer to the field spec vector.

Public Attributes
bool	neighborhood_initialized_
	See base class documentation.

Private Attributes
int_t	window_size_
	Window size for the virtual strain gauge (in pixels)

Additional Inherited Members
Protected Attributes inherited from DICe::Post_Processor
Teuchos::RCP< DICe::mesh::Mesh >	mesh_
	Pointer to the mesh to access fields and discretization.
std::string	name_
	String name of this post processor.
int_t	local_num_points_
	Number of points local to this processor.
int_t	overlap_num_points_
	Number of overalp points.
std::vector< DICe::field_enums::Field_Spec >	field_specs_
	The collection of field names specific to this post processor.
Teuchos::RCP< Point_Cloud_2D< scalar_t > >	point_cloud_
	pointer to the point cloud used for the neighbor searching
std::vector< std::vector< int_t > >	neighbor_list_
	array holding the number of neighbors for each point
std::vector< std::vector< scalar_t > >	neighbor_dist_x_
	array holding the signed x distances for each neighbor in one long strided array
std::vector< std::vector< scalar_t > >	neighbor_dist_y_
	array holding the signed y distances for each neighbor in one long strided array
bool	neighborhood_initialized_
	true when the neighbor lists have been constructed
std::string	coords_x_name_
	holds the field name to be used for coordinates field
std::string	coords_y_name_
	holds the field name to be used for coordinates field
std::string	disp_x_name_
	holds the field name to be used for coordinates field
std::string	disp_y_name_
	holds the field name to be used for coordinates field
bool	has_custom_field_names_
	true if the fields have been customized
int	current_frame_id_
	store the current frame number for output if needed

Detailed Description

A specific instance of post processor that computes vurtual strain gauge (VSG) strain.

The VSG strain is computed by doing a least-squares fit of the data and computing the strain using the coefficients of the fitted polynomial. It is well know that for large neighborhood sizes or VSG window size, this method will be very diffusive and smooth features out of the strain profile.

Constructor & Destructor Documentation

VSG_Strain_Post_Processor()

DICe::VSG_Strain_Post_Processor::VSG_Strain_Post_Processor

(

const Teuchos::RCP< Teuchos::ParameterList > &

params

)

Default constructor

Parameters

params

Pointer to the set of parameters for this post processor