This is the class for pixel interpolation from an input raster. More...

#include <TePDIInterpolator.hpp>

Public Types
enum	InterpMethod { NNMethod = 1, BilinearMethod = 2, BicubicMethod = 3 }
typedef TeSharedPtr < TePDIInterpolator >	pointer
typedef const TeSharedPtr < TePDIInterpolator >	const_pointer
Public Member Functions
	TePDIInterpolator ()
	Default Constructor.
	~TePDIInterpolator ()
	Default Destructor.
bool	reset (const TeSharedPtr< TeRaster > &input_raster, InterpMethod method, double dummy_value)
	Reset this interpolator instance.
void	interpolate (const double &line, const double &col, const unsigned int &band, double &value)
	Interpolate a pixel value.
Protected Types
typedef void(TePDIInterpolator::*	InterpFunctPtr )(const double &line, const double &col, const unsigned int &band, double &value)
	Type definition for the a interpolation function pointer.
Protected Member Functions
void	init ()
	Set default internal state.
void	clear ()
	Clear all allocated resources and rollback to the initial state.
void	nNInterpolation (const double &line, const double &col, const unsigned int &band, double &value)
void	bilinearInterpolation (const double &line, const double &col, const unsigned int &band, double &value)
void	bicubicInterpolation (const double &line, const double &col, const unsigned int &band, double &value)
Protected Attributes
TeRasterParams *	input_raster_params_nptr_
	Input raster naked pointer (default:0).
InterpFunctPtr	interp_funct_ptr_
	The current interpolation function pointer (default:0).
double	bicubic_lines_bound_
	The bicubic interpolation lines bound (not included, default:0).
double	bicubic_columns_bound_
	The bicubic interpolation columns bound (not included, default:0).
double	bicubic_kernel_parameter_
	The bicubic kernel parameters (default:-1.0).
double	last_valid_line_
	The last valid line index ( included, default:0 ).
double	last_valid_col_
	The last valid column index ( included, default:0 ).
bool	raster_uses_dummy_
	The current raster dummy use status (default:false).
unsigned int	nbands_
	The current raster bands number (default:0).
double	dummy_value_
	The current raster bands number (default:0).
TeSharedPtr< TeRaster >	input_raster_ptr_
	Input raster shared pointer copy.
TeRaster *	input_raster_nptr_
	Input raster shared naked pointer (default:0).
double *	input_raster_max_chan_val_vec_
	Input raster maximum allowed channels values vector (default:0).
double *	input_raster_min_chan_val_vec_
	Input raster minimum allowed channels values vector (default:0).
double	bilinear_line_min_
	Internal bilinear function used variable.
double	bilinear_line_max_
	Internal bilinear function used variable.
double	bilinear_col_min_
	Internal bilinear function used variable.
double	bilinear_col_max_
	Internal bilinear function used variable.
double	bilinear_diff_line_min_
	Internal bilinear function used variable.
double	bilinear_diff_line_max_
	Internal bilinear function used variable.
double	bilinear_diff_col_min_
	Internal bilinear function used variable.
double	bilinear_diff_col_max_
	Internal bilinear function used variable.
double	bilinear_dist1_
	Internal bilinear function used variable.
double	bilinear_dist2_
	Internal bilinear function used variable.
double	bilinear_dist3_
	Internal bilinear function used variable.
double	bilinear_dist4_
	Internal bilinear function used variable.
double	bilinear_weigh1_
	Internal bilinear function used variable.
double	bilinear_weigh2_
	Internal bilinear function used variable.
double	bilinear_weigh3_
	Internal bilinear function used variable.
double	bilinear_weigh4_
	Internal bilinear function used variable.
double	bilinear_elem1_
	Internal bilinear function used variable.
double	bilinear_elem2_
	Internal bilinear function used variable.
double	bilinear_elem3_
	Internal bilinear function used variable.
double	bilinear_elem4_
	Internal bilinear function used variable.
unsigned int	bicubic_grid_raster_line_
	Internal bicubic function used variable.
unsigned int	bicubic_grid_raster_col_
	Internal bicubic function used variable.
unsigned int	bicubic_buffer_line_
	Internal bicubic function used variable.
unsigned int	bicubic_buffer_col_
	Internal bicubic function used variable.
double	bicubic_buffer_ [4][4]
	Internal bicubic function used variable.
double	bicubic_offset_x_
	Internal bicubic function used variable.
double	bicubic_offset_y_
	Internal bicubic function used variable.
double	bicubic_h_weights_ [4]
	Internal bicubic function used variable.
double	bicubic_v_weights_ [4]
	Internal bicubic function used variable.
double	bicubic_h_weights_sum_
	Internal bicubic function used variable.
double	bicubic_v_weights_sum_
	Internal bicubic function used variable.
double	bicubic_int_line_accum_
	Internal bicubic function used variable.
double	bicubic_int_lines_values_ [4]
	Internal bicubic function used variable.

Detailed Description

This is the class for pixel interpolation from an input raster.

Author:: Emiliano F. Castejon <castejon@dpi.inpe.br>

Examples:: TePDIInterpolator_test.cpp.

Member Typedef Documentation

const TeSharedPtr< TePDIInterpolator > TePDIInterpolator::const_pointer

Type definition for a const instance pointer

typedef void(TePDIInterpolator::* TePDIInterpolator::InterpFunctPtr)(const double &line, const double &col, const unsigned int &band, double &value) [protected]

Type definition for the a interpolation function pointer.

Parameters:

line	Line.
col	Column.
band	Band.
value	Interpolated value.

TeSharedPtr< TePDIInterpolator > TePDIInterpolator::pointer

Type definition for a instance pointer

Member Enumeration Documentation

enum TePDIInterpolator::InterpMethod

Enumerator:

NNMethod	Near neighborhood interpolation method.
BilinearMethod	Bilinear interpolation method.
BicubicMethod	Bicubic interpolation method.

Constructor & Destructor Documentation

TePDIInterpolator::TePDIInterpolator ( )

Default Constructor.

TePDIInterpolator::~TePDIInterpolator ( )

Default Destructor.

Member Function Documentation

void TePDIInterpolator::bicubicInterpolation	(	const double &	line,
		const double &	col,
		const unsigned int &	band,
		double &	value
	)		`[protected]`

void TePDIInterpolator::bilinearInterpolation	(	const double &	line,
		const double &	col,
		const unsigned int &	band,
		double &	value
	)		`[protected]`

void TePDIInterpolator::clear ( ) [protected]

Clear all allocated resources and rollback to the initial state.

void TePDIInterpolator::init ( ) [protected]

Set default internal state.

void TePDIInterpolator::interpolate	(	const double &	line,
		const double &	col,
		const unsigned int &	band,
		double &	value
	)		`[inline]`

Interpolate a pixel value.

Parameters:

line	Line.
col	Column.
band	Band.
value	Interpolated value.

Note:: The caller of this method must be aware that the returned interpolated value may be outside the original input raster valid values range.

void TePDIInterpolator::nNInterpolation	(	const double &	line,
		const double &	col,
		const unsigned int &	band,
		double &	value
	)		`[protected]`

bool TePDIInterpolator::reset	(	const TeSharedPtr< TeRaster > &	input_raster,
		InterpMethod	method,
		double	dummy_value
	)

Reset this interpolator instance.

Parameters:

input_raster	Input raster shared pointer.
method	Interpolation method (For pallete based rasters only the NNMethod can be used).
dummy_value	A pixel dummy value to use when the input_raster do not have dummy_values.

Returns:: true if OK, false on errors.

Member Data Documentation

double TePDIInterpolator::bicubic_buffer_[4][4] [protected]

Internal bicubic function used variable.

unsigned int TePDIInterpolator::bicubic_buffer_col_ [protected]

Internal bicubic function used variable.

unsigned int TePDIInterpolator::bicubic_buffer_line_ [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_columns_bound_ [protected]

The bicubic interpolation columns bound (not included, default:0).

unsigned int TePDIInterpolator::bicubic_grid_raster_col_ [protected]

Internal bicubic function used variable.

unsigned int TePDIInterpolator::bicubic_grid_raster_line_ [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_h_weights_[4] [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_h_weights_sum_ [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_int_line_accum_ [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_int_lines_values_[4] [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_kernel_parameter_ [protected]

The bicubic kernel parameters (default:-1.0).

double TePDIInterpolator::bicubic_lines_bound_ [protected]

The bicubic interpolation lines bound (not included, default:0).

double TePDIInterpolator::bicubic_offset_x_ [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_offset_y_ [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_v_weights_[4] [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bicubic_v_weights_sum_ [protected]

Internal bicubic function used variable.

double TePDIInterpolator::bilinear_col_max_ [protected]