ImageMoments Class Reference

State object for calculating various image moments. More...

Inherits INativeHandle.

Public Member Functions
void	Dispose ()
	Dispose method that releases the classifier
double	CalculateSpatialMoment (MomentsOrder xOrder, MomentsOrder yOrder, Point2D offset, MomentsNormalization normalization)
	Get one of the spatial image moments. More...
double	CalculateGetSpatialMoment (MomentsOrder xOrder, MomentsOrder yOrder, MomentsNormalization normalization)
	Get one of the spatial image moments. More...
double	CalculateCentralMoment (MomentsOrder xOrder, MomentsOrder yOrder, MomentsNormalization normalization)
	Get one of the central image moments. More...
HuMoments	CaltulateHuMoments ()
	Get the seven Hu moments of the image. More...

Static Public Member Functions
static ImageMoments	Calculate (ImagePlane imgPlane, Rect aoi, MomentsCalculation preference)
	Calculate the moments on the input imgPlane and aoi (area of interest). More...
static ImageMoments	Calculate (ImagePlane imgPlane, Rect aoi)
	Calculate the moments on the input imgPlane and aoi favoring neither speed nor accuracy. More...
static ImageMoments	Calculate (ImagePlane imgPlane, MomentsCalculation preference)
	Calculate the moments on the input imgPlane . More...
static ImageMoments	Calculate (ImagePlane imgPlane)
	Calculate the moments on the input imgPlane favoring neither speed nor accuracy. More...

Protected Member Functions
virtual void	Dispose (bool disposing)
	IDispose helper function. More...

Properties
IntPtr	Handle [get]
	Native non linear transformation handle. More...
bool	IsDisposed [get]
	Tests if the native handle has already been disposed.
MomentsCalculation	CalculationPreference [get]
	The preference of speed versus accuracy chosen when this object was created.
Properties inherited from INativeHandle
IntPtr	Handle [get]
	The native handle of the object.
bool	IsDisposed [get]
	Possibility to check whether the object has already been disposed of.

Events
NativeHandleEventDelegate	ObjectDisposing
	Raised when this object is about to be disposed via the IDisposable.Dispose method. More...
Events inherited from INativeHandle
NativeHandleEventDelegate	ObjectDisposing
	Raised when this object is about to be disposed via the IDisposable.Dispose method. More...

Detailed Description

State object for calculating various image moments.

Member Function Documentation

Calculate() [1/4]

static ImageMoments Calculate ( ImagePlane  imgPlane )

static

Calculate the moments on the input imgPlane favoring neither speed nor accuracy.

Parameters

imgPlane

Plane to calculate the moments on

Returns

Moments object.

Calculate() [2/4]

static ImageMoments Calculate ( ImagePlane  imgPlane, MomentsCalculation  preference  )

static

Calculate the moments on the input imgPlane .

Parameters

imgPlane	Plane to calculate the moments on
preference	Speed or accuracy.

Returns

Moments object.

Calculate() [3/4]

static ImageMoments Calculate ( ImagePlane  imgPlane, Rect  aoi  )

static

Calculate the moments on the input imgPlane and aoi favoring neither speed nor accuracy.

Parameters

imgPlane	Plane to calculate the moments on.
aoi	Area of interest to calculate the moments in.

Returns

Moments object.

Calculate() [4/4]

static ImageMoments Calculate ( ImagePlane  imgPlane, Rect  aoi, MomentsCalculation  preference  )

static

Calculate the moments on the input imgPlane and aoi (area of interest).

Parameters

imgPlane	Plane to calculate the moments.
aoi	Area of interest to calculate the moments in.
preference	Speed or accuracy.

Returns

Moments object.

CalculateCentralMoment()

double CalculateCentralMoment	(	MomentsOrder	xOrder,
		MomentsOrder	yOrder,
		MomentsNormalization	normalization
	)

Get one of the central image moments.

Parameters

xOrder	X order of the moment to retrieve
yOrder	Y order of the moment to retrieve
normalization	Whether or not to normalize.

Returns

The central moment.

CalculateGetSpatialMoment()

double CalculateGetSpatialMoment	(	MomentsOrder	xOrder,
		MomentsOrder	yOrder,
		MomentsNormalization	normalization
	)

Get one of the spatial image moments.

This overload automatically uses the offset used in creating this object.

Parameters

xOrder	X order of the moment to retrieve
yOrder	Y order of the moment to retrieve
normalization	Whether or not to normalize.

Returns

The spatial moment.

CalculateSpatialMoment()

double CalculateSpatialMoment	(	MomentsOrder	xOrder,
		MomentsOrder	yOrder,
		Point2D	offset,
		MomentsNormalization	normalization
	)

Get one of the spatial image moments.

Parameters

xOrder	X order of the moment to retrieve
yOrder	Y order of the moment to retrieve
offset	Offset of the moments.
normalization	Whether or not to normalize.

Returns

The spatial moment.

CaltulateHuMoments()

HuMoments CaltulateHuMoments

(

)

Get the seven Hu moments of the image.

Returns

Hu moments.

Dispose()

virtual void Dispose ( bool  disposing )

protectedvirtual

IDispose helper function.

Parameters

disposing

true when called via IDisposable.Dispose, false when called by the finalizer.

Property Documentation

Handle

IntPtr Handle

get

Native non linear transformation handle.

It is normally not necessary to work with this handle in CVB.Net. Note that using this handle in connection with the legacy CVB managed wrappers may actually be disruptive to your application.

Implements INativeHandle.

Event Documentation

ObjectDisposing

NativeHandleEventDelegate ObjectDisposing

Raised when this object is about to be disposed via the IDisposable.Dispose method.

This event is raised right before this object is disposed. The dispose itself cannot be canceled.