core/vil/vil_math.h File Reference

Detailed Description

Various mathematical manipulations of 2D images.

Author:: Tim Cootes

Definition in file vil_math.h.

#include <vcl_cassert.h>
#include <vcl_vector.h>
#include <vcl_cmath.h>
#include <vcl_algorithm.h>
#include <vil/vil_image_view.h>
#include <vil/vil_view_as.h>
#include <vil/vil_plane.h>
#include <vil/vil_transform.h>

Go to the source code of this file.


Classes
class	vil_math_sqrt_functor
	Functor class to compute square roots (returns zero if x<0). More...
class	vil_math_scale_functor
	Functor class to scale by s. More...
class	vil_math_scale_and_translate_functor
	Functor class to scale by s and translate (offset) by t. More...
class	vil_math_log_functor
	Functor class to compute logarithms (returns zero if x<=0). More...
Functions
template<class T>
void	vil_math_value_range (const vil_image_view< T > &view, T &min_value, T &max_value)
	Compute minimum and maximum values over view.
VCL_DEFINE_SPECIALIZATION void	vil_math_value_range (const vil_image_view< vil_rgb< vxl_byte > > &rgb_view, vil_rgb< vxl_byte > &min_value, vil_rgb< vxl_byte > &max_value)
	Compute minimum and maximum values over view.
VCL_DEFINE_SPECIALIZATION void	vil_math_value_range (const vil_image_view< vil_rgb< float > > &rgb_view, vil_rgb< float > &min_value, vil_rgb< float > &max_value)
	Compute minimum and maximum values over view.
void	vil_math_median_unimplemented ()
VCL_DEFINE_SPECIALIZATION void	vil_math_median (vxl_byte &median, const vil_image_view< vxl_byte > &im, unsigned p)
template<class imT>
void	vil_math_normalise (vil_image_view< imT > &image)
	Scale and offset values so their mean is zero and their variance is one.
template<class srcT, class destT>
void	vil_math_rms (const vil_image_view< srcT > &src, vil_image_view< destT > &dest)
	Computes RMS of each pixel over the planes of src image.
template<class srcT, class destT>
void	vil_math_rss (const vil_image_view< srcT > &src, vil_image_view< destT > &dest)
	Computes Root Sum of Squares of each pixel over the planes of src image.
template<class srcT, class destT>
void	vil_math_sum_sqr (const vil_image_view< srcT > &src, vil_image_view< destT > &dest)
	Computes sum of squares of each pixel over the planes of src image.

Function Documentation

VCL_DEFINE_SPECIALIZATION void vil_math_median	(	vxl_byte &	median,
		const vil_image_view< vxl_byte > &	im,
		unsigned	p
	)

void vil_math_median_unimplemented ( )

template<class imT>

void vil_math_normalise ( vil_image_view< imT > & image ) [inline]

Scale and offset values so their mean is zero and their variance is one.

Only works on signed types!

Definition at line 449 of file vil_math.h.

template<class srcT, class destT>

void vil_math_rms	(	const vil_image_view< srcT > &	src,
		vil_image_view< destT > &	dest
	)			`[inline]`

Computes RMS of each pixel over the planes of src image.

Dest is a single plane image, $dest(i,j)^2 = 1/np sum_p src(i,j,p)^2$ Summation is performed using type destT

Definition at line 464 of file vil_math.h.

template<class srcT, class destT>

void vil_math_rss	(	const vil_image_view< srcT > &	src,
		vil_image_view< destT > &	dest
	)			`[inline]`

Computes Root Sum of Squares of each pixel over the planes of src image.

Dest is a single plane image, $dest(i,j) = sqrt(sum_p src(i,j,p)^2)$ Differs from RMS by the scaling factor sqrt(nplanes) Summation is performed using type destT

Definition at line 514 of file vil_math.h.

template<class srcT, class destT>

void vil_math_sum_sqr	(	const vil_image_view< srcT > &	src,
		vil_image_view< destT > &	dest
	)			`[inline]`

Computes sum of squares of each pixel over the planes of src image.

Dest is a single plane image, $dest(i,j) = sum_p src(i,j,p)^2$ Summation is performed using type destT

Definition at line 564 of file vil_math.h.

VCL_DEFINE_SPECIALIZATION void vil_math_value_range	(	const vil_image_view< vil_rgb< float > > &	rgb_view,
		vil_rgb< float > &	min_value,
		vil_rgb< float > &	max_value
	)			`[inline]`

Compute minimum and maximum values over view.

Definition at line 63 of file vil_math.h.

VCL_DEFINE_SPECIALIZATION void vil_math_value_range	(	const vil_image_view< vil_rgb< vxl_byte > > &	rgb_view,
		vil_rgb< vxl_byte > &	min_value,
		vil_rgb< vxl_byte > &	max_value
	)			`[inline]`

Compute minimum and maximum values over view.

Definition at line 51 of file vil_math.h.

template<class T>

void vil_math_value_range	(	const vil_image_view< T > &	view,
		T &	min_value,
		T &	max_value
	)			`[inline]`

Compute minimum and maximum values over view.

Definition at line 21 of file vil_math.h.

Generated on Fri Aug 29 05:07:45 2008 for core/vil by

1.5.1

core/vil/vil_math.h File Reference

Detailed Description

Classes

Functions

Function Documentation