Rectangle gauge. More...

Inheritance diagram for eVision.ERectangleGauge:

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Collaboration diagram for eVision.ERectangleGauge:

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Public Member Functions
	ERectangleGauge ()
	Constructs a ERectangleGauge.
	ERectangleGauge (eVision.ERectangle rect)
	Constructs a ERectangleGauge.
	ERectangleGauge (eVision.ERectangleGauge other)
	Copy constructor.
void	CopyTo (eVision.ERectangleGauge dest)
	Copies all the data of the current ERectangleGauge object into another ERectangleGauge object.
void	DisableInnerFiltering ()
	Disables inner sampled point filtering.
bool	IsInnerFilteringEnabled ()
	Whether inner sampled point filtering is enabled.
eVision.ESamplePoint	GetSampleLeftEdge (uint index)
	Allows to retrieve information on the samples found along the leftmost edge.
eVision.ESamplePoint	GetSampleLowerEdge (uint index)
	Allows to retrieve information on the samples found along the lower edge.
eVision.ESamplePoint	GetSampleRightEdge (uint index)
	Allows to retrieve information on the samples found along the rightmost edge.
eVision.ESamplePoint	GetSampleUpperEdge (uint index)
	Allows to retrieve information on the samples found along the upper edge.
new eVision.ERectangle	Measure (eVision.EROIBW8 sourceImage, eVision.EFrame frame)
	Performs the gauge measurement.
new eVision.ERectangle	Measure (eVision.EROIBW8 sourceImage)
	Performs the gauge measurement.
new eVision.ERectangle	Measure (eVision.EROIBW8 sourceImage, eVision.ERegion region, eVision.EFrame frame)
	Performs the gauge measurement.
new eVision.ERectangle	Measure (eVision.EROIBW8 sourceImage, eVision.ERegion region)
	Performs the gauge measurement.
void	SetMinNumFitSamples (uint topSide, uint leftSide, uint bottomSide, uint rightSide)
	Sets the minimum number of samples required for fitting the shape.
void	SetMinNumFitSamples (eVision.ERectangleGaugeEdge edge, uint newValue)
	Sets the minimum number of samples required for fitting the shape.
uint	GetMinNumFitSamples (eVision.ERectangleGaugeEdge edge)
	Sets the minimum number of samples required for fitting the shape.
Public Member Functions inherited from eVision.EBaseGauge
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, float zoomX, float zoomY, float panX, float panY)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, float zoomX, float zoomY, float panX)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, float zoomX, float zoomY)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, float zoomX)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, eVision.EFrame frame, float zoomX, float zoomY, float panX, float panY)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, eVision.EFrame frame, float zoomX, float zoomY, float panX)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, eVision.EFrame frame, float zoomX, float zoomY)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, eVision.EFrame frame, float zoomX)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
void	Draw (eVision.EDrawAdapter graphicContext, eVision.EDrawingMode drawingMode, eVision.EFrame frame)
	Draws a graphical representation of a shape, as defined by EDrawingMode.
eVision.EEditionMode	HitTest (int x, int y, float zoomX, float zoomY, float panX, float panY)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y, float zoomX, float zoomY, float panX)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y, float zoomX, float zoomY)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y, float zoomX)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y, eVision.EFrame frame, float zoomX, float zoomY, float panX, float panY)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y, eVision.EFrame frame, float zoomX, float zoomY, float panX)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y, eVision.EFrame frame, float zoomX, float zoomY)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y, eVision.EFrame frame, float zoomX)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
eVision.EEditionMode	HitTest (int x, int y, eVision.EFrame frame)
	Checks if there is a handle under the cursor and returns the corresponding edition mode.
void	Drag (int x, int y, float zoomX, float zoomY, float panX, float panY)
	Moves a handle to a new position and updates the position parameters of the shape.
void	Drag (int x, int y, float zoomX, float zoomY, float panX)
	Moves a handle to a new position and updates the position parameters of the shape.
void	Drag (int x, int y, float zoomX, float zoomY)
	Moves a handle to a new position and updates the position parameters of the shape.
void	Drag (int x, int y, float zoomX)
	Moves a handle to a new position and updates the position parameters of the shape.
void	Drag (int x, int y, eVision.EFrame frame, float zoomX, float zoomY, float panX, float panY)
	Moves a handle to a new position and updates the position parameters of the shape.
void	Drag (int x, int y, eVision.EFrame frame, float zoomX, float zoomY, float panX)
	Moves a handle to a new position and updates the position parameters of the shape.
void	Drag (int x, int y, eVision.EFrame frame, float zoomX, float zoomY)
	Moves a handle to a new position and updates the position parameters of the shape.
void	Drag (int x, int y, eVision.EFrame frame, float zoomX)
	Moves a handle to a new position and updates the position parameters of the shape.
void	Save (string path)
	Saves a gauge.The given ESerializer must have been created for writing.
void	Save (eVision.ESerializer serializer)
	Saves a gauge.The given ESerializer must have been created for writing.
void	Load (string path)
	Loads a gauge.The given ESerializer must have been created for reading.
void	Load (eVision.ESerializer serializer)
	Loads a gauge.The given ESerializer must have been created for reading.
bool	HasProperty (string aProperty)
	Returns whether a EBaseGauge has a property named aProperty.
string	GetProperty (string aProperty)
	Gets the value of property aProperty. Throws an exception if no such property exists.
void	SetProperty (string aProperty, string aValue)
	Sets the value of property aProperty to aValue for this EBaseGauge.
void	RemoveProperty (string aProperty)
	Removes the property name aProperty from the EBaseGauge.
bool	HasValidPolarityProperty ()
	Returns whether the EBaseGauge has a valid polarity property.
eVision.ESamplePoint	GetSample (uint index)
	Retrieves sampled points used during the model fitting operation.
bool	HasSamples ()
	Whether the samples are available or not.
uint	AddSkipRange (eVision.EIntegerRange range)
	Adds an item to the set of skip ranges and returns the index of the newly added range.
eVision.EIntegerRange	GetSkipRange (uint index)
	Allows to retrieve the start and end values of the skip range corresponding to the given index, if it is valid (i.e. if it has previously been created by a call to the EBaseGauge.AddSkipRange method).
void	RemoveSkipRange (uint index)
	After a call to EBaseGauge.AddSkipRange, removes the skip range with the given index.
void	RemoveAllSkipRanges ()
	Removes all the skip ranges previously created by a call to EBaseGauge.AddSkipRange.
eVision.EShape	Measure (eVision.EROIBW8 sourceImage, eVision.EFrame frame)
	Performs the gauge measurement.
eVision.EShape	Measure (eVision.EROIBW8 sourceImage)
	Performs the gauge measurement.
eVision.EShape	Measure (eVision.EROIBW8 sourceImage, eVision.ERegion region, eVision.EFrame frame)
	Performs the gauge measurement.
eVision.EShape	Measure (eVision.EROIBW8 sourceImage, eVision.ERegion region)
	Performs the gauge measurement.
void	MeasureWithoutFitting (eVision.EROIBW8 sourceImage, eVision.EFrame frame)
	Triggers the point location without line fitting operation.
void	MeasureWithoutFitting (eVision.EROIBW8 sourceImage)
	Triggers the point location without line fitting operation.
void	MeasureWithoutFitting (eVision.EROIBW8 sourceImage, eVision.ERegion region, eVision.EFrame frame)
	Triggers the point location without line fitting operation.
void	MeasureWithoutFitting (eVision.EROIBW8 sourceImage, eVision.ERegion region)
	Triggers the point location without line fitting operation.
bool	IsFound ()
	Flag indicating whether a measured shape has been found.
virtual eVision.ESamplePath	MeasureSamplePath (eVision.EROIBW8 sourceImage, uint pathIndex, eVision.EFrame frame)
	Measures the specified sample path.
virtual eVision.ESamplePath	MeasureSamplePath (eVision.EROIBW8 sourceImage, uint pathIndex)
	Measures the specified sample path.
virtual eVision.ESamplePath	MeasureSamplePath (eVision.EROIBW8 sourceImage, uint pathIndex, eVision.ERegion region, eVision.EFrame frame)
	Measures the specified sample path.
virtual eVision.ESamplePath	MeasureSamplePath (eVision.EROIBW8 sourceImage, uint pathIndex, eVision.ERegion region)
	Measures the specified sample path.

Properties
eVision.ERectangle	Rectangle `[get, set]`
	Nominal rectangle.
override eVision.EShapeType	Type `[get]`
	Shape type.
override eVision.EShape	Nominal `[get, set]`
	Nominal shape of the gauge.
float	InnerFilteringThreshold `[get, set]`
	Sampled point inner filtering threshold.
override eVision.EEditionMode	AvailableEditionModes `[get]`
	Returns all possible edition modes of the gauge.
uint	ActiveEdges `[get, set]`
	Active edges as defined in ERectangleGaugeEdge.
override float	Tolerance `[get, set]`
	Half thickness of the model fitting gauge.
override bool	HVConstraint `[get, set]`
	Status of the restriction on the orientation of the point location gauge or model fitting sample paths.
override eVision.ETransitionType	TransitionType `[get, set]`
	Transition type.
override eVision.ETransitionChoice	TransitionChoice `[get, set]`
	Transition choice.
override uint	TransitionIndex `[get, set]`
	Index (from 0 on) of the transition to be retained when the transition choice parameter is set to ETransitionChoice.ETransitionChoice_NthFromBegin or ETransitionChoice.ETransitionChoice_NthFromEnd.
override uint	Threshold `[get, set]`
	Threshold level used to delimit significant peaks in the data profile.
override uint	MinAmplitude `[get, set]`
	Offset added to the Threshold when a peak is to be detected.
override uint	MinArea `[get, set]`
	Minimum area value.
override uint	Thickness `[get, set]`
	Number of parallel segments used to extract the data profile.
override uint	Smoothing `[get, set]`
	Number of pixels used for the low-pass filtering operation.
override bool	RectangularSamplingArea `[get, set]`
	Flag indicating whether the sampling area remains a rectangle when rotated, instead of becoming a parallelogram.
override uint	NumSamples `[get]`
	Number of sampled points during the model fitting operation.
uint	NumSamplesLeftEdge `[get]`
	Number of sampled points found on leftmost edge during the measure operation.
uint	NumSamplesRightEdge `[get]`
	Number of sampled points found on rightmost edge during the measure operation.
uint	NumSamplesLowerEdge `[get]`
	Number of sampled points found on lower edge during the measure operation.
uint	NumSamplesUpperEdge `[get]`
	Number of sampled points found on upper edge during the measure operation.
bool	KnownAngle `[get, set]`
	Flag indicating whether the rotation angle of the rectangle to be fitted is known or not.
eVision.ERectangle	MeasuredRectangle `[get]`
	Information pertaining to the fitted rectangle.
override eVision.EShape	Measured `[get]`
	Copy of the measured shape.
new uint[]	MinNumFitSamples `[get]`
	Sets the minimum number of samples required for fitting the shape.
Properties inherited from eVision.EBaseGauge
eVision.EShapeType	Type `[get]`
	Shape type.
string	Name `[get, set]`
	Name of the EBaseGauge object.
eVision.EShape	Nominal `[get, set]`
	Nominal shape of the gauge.
eVision.EEditionMode	EditionMode `[get, set]`
	Graphical edition mode (default: EBaseGauge.AvailableEditionModes).
virtual eVision.EEditionMode	AvailableEditionModes `[get]`
	Returns all possible edition modes of the gauge.
bool	Labeled `[get, set]`
	Whether to draw a label describing the gauge (default: no).
float	Tolerance `[get, set]`
	Half thickness of the model fitting gauge.
bool	HVConstraint `[get, set]`
	Status of the restriction on the orientation of the point location gauge or model fitting sample paths.
eVision.ETransitionType	TransitionType `[get, set]`
	Transition type.
eVision.ETransitionChoice	TransitionChoice `[get, set]`
	Transition choice.
uint	TransitionIndex `[get, set]`
	Index (from 0 on) of the transition to be retained when the transition choice parameter is set to ETransitionChoice.ETransitionChoice_NthFromBegin or ETransitionChoice.ETransitionChoice_NthFromEnd.
uint	Threshold `[get, set]`
	Threshold level used to delimit significant peaks in the data profile.
uint	MinAmplitude `[get, set]`
	Offset added to the Threshold when a peak is to be detected.
uint	MinArea `[get, set]`
	Minimum area value.
uint	Thickness `[get, set]`
	Number of parallel segments used to extract the data profile.
uint	Smoothing `[get, set]`
	Number of pixels used for the low-pass filtering operation.
bool	RectangularSamplingArea `[get, set]`
	Flag indicating whether the sampling area remains a rectangle when rotated, instead of becoming a parallelogram.
float	SamplingStep `[get, set]`
	Approximate distance between sampled points during a model fitting operation.
uint	NumSamples `[get]`
	Number of sampled points during the model fitting operation.
float	FilteringThreshold `[get, set]`
	Relative filtering threshold, that is the fraction of the average distance between the sampled points and the fitted model above which a point is filtered out.
uint	NumFilteringPasses `[get, set]`
	Number of filtering passes for a model fitting operation.
uint	NumValidSamples `[get]`
	Number of valid sample points remaining after a model fitting operation.
uint	SamplePointIndex `[get, set]`
	Sampled.
float	AverageDistance `[get]`
	Average distance between the sampled points and the fitted model.
int[]	MinNumFitSamples `[get, set]`
	Sets/Gets the minimum number of samples required for fitting the shape.
uint	NumSkipRanges `[get]`
	Number of skip ranges in the gauge after a call to EBaseGauge.AddSkipRange.
eVision.EShape	Measured `[get]`
	Copy of the measured shape.

Additional Inherited Members
Static Public Member Functions inherited from eVision.EBaseGauge
static eVision.EBaseGauge	Make (string path)
	Creates a gauge of the correct type.

Detailed Description

Rectangle gauge.

License(s): EasyGauge

Constructor & Destructor Documentation

◆ ERectangleGauge() [1/3]

eVision.ERectangleGauge.ERectangleGauge ( )

Constructs a ERectangleGauge.

◆ ERectangleGauge() [2/3]

eVision.ERectangleGauge.ERectangleGauge ( eVision.ERectangle rect )

Constructs a ERectangleGauge.

Parameters

rect	Nominal rectangle

◆ ERectangleGauge() [3/3]

eVision.ERectangleGauge.ERectangleGauge ( eVision.ERectangleGauge other )

Copy constructor.

Parameters

other Other ERectangleGauge object.

Member Function Documentation

◆ CopyTo()

void eVision.ERectangleGauge.CopyTo ( eVision.ERectangleGauge dest )

Copies all the data of the current ERectangleGauge object into another ERectangleGauge object.

Parameters

dest	An ERectangleGauge object in which the current ERectangleGauge object data have to be copied.

◆ DisableInnerFiltering()

void eVision.ERectangleGauge.DisableInnerFiltering ( )

Disables inner sampled point filtering.

The inner sampled point filtering is activated as soon as the corresponding ERectangleGauge.InnerFilteringThreshold is set.

◆ GetMinNumFitSamples()

uint eVision.ERectangleGauge.GetMinNumFitSamples ( eVision.ERectangleGaugeEdge edge )

Sets the minimum number of samples required for fitting the shape.

Parameters

edge	Related edge.

◆ GetSampleLeftEdge()

eVision.ESamplePoint eVision.ERectangleGauge.GetSampleLeftEdge ( uint index )

Allows to retrieve information on the samples found along the leftmost edge.

Parameters

index The sample index

◆ GetSampleLowerEdge()

eVision.ESamplePoint eVision.ERectangleGauge.GetSampleLowerEdge ( uint index )

Allows to retrieve information on the samples found along the lower edge.

Parameters

index The sample index

◆ GetSampleRightEdge()

eVision.ESamplePoint eVision.ERectangleGauge.GetSampleRightEdge ( uint index )

Allows to retrieve information on the samples found along the rightmost edge.

Parameters

index The sample index

◆ GetSampleUpperEdge()

eVision.ESamplePoint eVision.ERectangleGauge.GetSampleUpperEdge ( uint index )

Allows to retrieve information on the samples found along the upper edge.

Parameters

index The sample index

◆ IsInnerFilteringEnabled()

bool eVision.ERectangleGauge.IsInnerFilteringEnabled ( )

Whether inner sampled point filtering is enabled.

The inner sampled point filtering is activated as soon as the corresponding threshold is set, getting the ERectangleGauge.InnerFilteringThreshold property. To disable inner filtering, use the ERectangleGauge.DisableInnerFiltering method.

◆ Measure() [1/4]

new eVision.ERectangle eVision.ERectangleGauge.Measure ( eVision.EROIBW8 sourceImage )

Performs the gauge measurement.

Parameters

sourceImage Source image.

◆ Measure() [2/4]

new eVision.ERectangle eVision.ERectangleGauge.Measure	(	eVision.EROIBW8	sourceImage,
		eVision.EFrame	frame )

Performs the gauge measurement.

Parameters

sourceImage	Source image.
frame	Frame of reference

◆ Measure() [3/4]

new eVision.ERectangle eVision.ERectangleGauge.Measure	(	eVision.EROIBW8	sourceImage,
		eVision.ERegion	region )

Performs the gauge measurement.

Parameters

sourceImage	Source image.
region	Region to use with the source image.

◆ Measure() [4/4]

new eVision.ERectangle eVision.ERectangleGauge.Measure	(	eVision.EROIBW8	sourceImage,
		eVision.ERegion	region,
		eVision.EFrame	frame )

Performs the gauge measurement.

Parameters

sourceImage	Source image.
region	Region to use with the source image.
frame	Frame of reference

◆ SetMinNumFitSamples() [1/2]

void eVision.ERectangleGauge.SetMinNumFitSamples	(	eVision.ERectangleGaugeEdge	edge,
		uint	newValue )

Sets the minimum number of samples required for fitting the shape.

Parameters

edge	Related edge to change the minimum number of samples.
newValue	New value for minimum number of samples for the specified edge.

◆ SetMinNumFitSamples() [2/2]

void eVision.ERectangleGauge.SetMinNumFitSamples	(	uint	topSide,
		uint	leftSide,
		uint	bottomSide,
		uint	rightSide )

Sets the minimum number of samples required for fitting the shape.

Parameters

topSide	Minimum number of samples to fit the top side.
leftSide	Minimum number of samples to fit the left side.
bottomSide	Minimum number of samples to fit the bottom side.
rightSide	Minimum number of samples to fit the right side.

Property Documentation

◆ ActiveEdges

uint eVision.ERectangleGauge.ActiveEdges

getset

Active edges as defined in ERectangleGaugeEdge.

◆ AvailableEditionModes

override eVision.EEditionMode eVision.ERectangleGauge.AvailableEditionModes

get

Returns all possible edition modes of the gauge.

◆ HVConstraint

override bool eVision.ERectangleGauge.HVConstraint

getset

Status of the restriction on the orientation of the point location gauge or model fitting sample paths.

Sample paths are the point location gauges placed along the model to be fitted.

◆ InnerFilteringThreshold

float eVision.ERectangleGauge.InnerFilteringThreshold

getset

Sampled point inner filtering threshold.

If inner filtering is enabled, the sampled points that have been found inside the measured rectangle are filtered in regard of their distance to it. If this distance is greater than the threshold, the sampled point is set as invalid, and removed from the measure. This distance is in physical units.

The inner sampled point filtering is activated as soon as the corresponding threshold is set. To disable inner filtering, use the DisableInnerFiltering method.

◆ KnownAngle

bool eVision.ERectangleGauge.KnownAngle

getset

Flag indicating whether the rotation angle of the rectangle to be fitted is known or not.

A rectangle model to be fitted may have a well-known orientation. It is possible to impose the value of this rotation angle, thus removing one degree of freedom.

The sign of the rotation angle depends on whether the field of view is calibrated or not.

When the field of view is calibrated, the coordinate system is said to be direct, the abscissa extends rightwards and the ordinate extends upwards. In this case, an anticlockwise rotation leads to a positive angle value.
When the field of view is not calibrated, the coordinate system is said to be inverse, the abscissa extends rightwards and the ordinate extends downwards. In this case, a clockwise rotation leads to a positive angle value.

◆ Measured

override eVision.EShape eVision.ERectangleGauge.Measured

get

Copy of the measured shape.

◆ MeasuredRectangle

eVision.ERectangle eVision.ERectangleGauge.MeasuredRectangle

get

Information pertaining to the fitted rectangle.

◆ MinAmplitude

override uint eVision.ERectangleGauge.MinAmplitude

getset

Offset added to the Threshold when a peak is to be detected.

When analyzing a derivative profile, a peak is made up of consecutive pixel values above Threshold. To detect weak [strong] transitions, lower [raise] the Threshold value.

To avoid interference of noise, an additional parameter is provided. The MinAmplitude parameter is an offset added to Threshold when a peak is to be detected.

When the pixel values of the derivative profile do not reach Threshold + MinAmplitude, the peak is not taken into account. Anyway, when a peak is taken into account, all the pixels with values above Threshold are considered (for more accuracy). Setting the MinAmplitude value to 0 merely cancels its effect.

◆ MinArea

override uint eVision.ERectangleGauge.MinArea

getset

Minimum area value.

A transition is detected if its derivative peak reaches Threshold + MinAmplitude value, and then declared valid if the area between the peak curve and the horizontal at level Threshold reaches the MinArea value.

◆ MinNumFitSamples

new uint [] eVision.ERectangleGauge.MinNumFitSamples

get

Sets the minimum number of samples required for fitting the shape.

◆ Nominal

override eVision.EShape eVision.ERectangleGauge.Nominal

getset

Nominal shape of the gauge.

Note that the gauge stores a copy of the shape and returns a copy of the shape. The gauge applies its EBaseGauge.EditionMode to the shape.

◆ NumSamples

override uint eVision.ERectangleGauge.NumSamples

get

Number of sampled points during the model fitting operation.

Irrelevant in case of a point location operation.

After a model fitting operation, a number of points have been fitted along the model. Among them, some are not reliable because of their Area value. Among the remaining ones, some are filtered out (NumFilteringPasses, FilteringThreshold).

◆ NumSamplesLeftEdge

uint eVision.ERectangleGauge.NumSamplesLeftEdge

get

Number of sampled points found on leftmost edge during the measure operation.

◆ NumSamplesLowerEdge

uint eVision.ERectangleGauge.NumSamplesLowerEdge

get

Number of sampled points found on lower edge during the measure operation.

◆ NumSamplesRightEdge

uint eVision.ERectangleGauge.NumSamplesRightEdge

get

Number of sampled points found on rightmost edge during the measure operation.

◆ NumSamplesUpperEdge

uint eVision.ERectangleGauge.NumSamplesUpperEdge

get

Number of sampled points found on upper edge during the measure operation.

◆ Rectangle

eVision.ERectangle eVision.ERectangleGauge.Rectangle

getset

Nominal rectangle.

◆ RectangularSamplingArea

override bool eVision.ERectangleGauge.RectangularSamplingArea

getset

Flag indicating whether the sampling area remains a rectangle when rotated, instead of becoming a parallelogram.

By default, this flag is set to true: the sampling area always remains a rectangle. Setting this property is only useful when the thickness transition parameter is greater than 1. In fact, when thickness transition parameter is equal to 1, rectangle and parallelogram reduce to the same segment.

◆ Smoothing

override uint eVision.ERectangleGauge.Smoothing

getset

Number of pixels used for the low-pass filtering operation.

To reduce the effect of noise, the profile data can be low-pass filtered along the point location gauge direction.

◆ Thickness

override uint eVision.ERectangleGauge.Thickness

getset

Number of parallel segments used to extract the data profile.

To reduce the effect of noise and/or strengthen a transition, several parallel profiles can be accumulated.

◆ Threshold

override uint eVision.ERectangleGauge.Threshold

getset

Threshold level used to delimit significant peaks in the data profile.

When analyzing a derivative profile, a peak is made up of consecutive pixel values above Threshold. To detect weak [strong] transitions, lower [raise] the Threshold value.

To avoid interference of noise, an additional parameter is provided. The MinAmplitude parameter is an offset added to Threshold when a peak is to be detected.

When the pixel values of the derivative profile do not reach Threshold + MinAmplitude, the peak is not taken into account. Anyway, when a peak is taken into account, all the pixels with values above Threshold are considered (for more accuracy). Setting the MinAmplitude value to 0 merely cancels its effect.

◆ Tolerance

override float eVision.ERectangleGauge.Tolerance

getset

Half thickness of the model fitting gauge.

By default, the tolerance is 20 (2x10), which means 20 pixels when the field of view is not calibrated, and 20 physical units in case of a calibrated field of view.

The tolerance isn't taken into consideration for the point gauge.

◆ TransitionChoice

override eVision.ETransitionChoice eVision.ERectangleGauge.TransitionChoice

getset

Transition choice.

Several peaks may be detected along a point location gauge. This parameter helps to select the desired transition.

In case of ETransitionChoice.ETransitionChoice_NthFromBegin or ETransitionChoice.ETransitionChoice_NthFromEnd transition choice, set EBaseGauge.TransitionIndex to specify the desired transition.

By default, the selected transition corresponds to the one with the largest amplitude (ETransitionChoice.ETransitionChoice_LargestAmplitude).

◆ TransitionIndex

override uint eVision.ERectangleGauge.TransitionIndex

getset

Index (from 0 on) of the transition to be retained when the transition choice parameter is set to ETransitionChoice.ETransitionChoice_NthFromBegin or ETransitionChoice.ETransitionChoice_NthFromEnd.

Several peaks may be detected along a point location gauge. This parameter helps to select the desired transition.

By default, the first transition is retained (the index value is 0).

◆ TransitionType

override eVision.ETransitionType eVision.ERectangleGauge.TransitionType

getset

Transition type.

The type of transition tells whether it crosses increasing or decreasing gray-level values. This helps discriminate between nearby edges of an object.

By default, the searched transition type is indifferently a black to white or a white to black transition (ETransitionType.ETransitionType_BwOrWb).

◆ Type

override eVision.EShapeType eVision.ERectangleGauge.Type

get

Shape type.

Public Member Functions

Properties

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ERectangleGauge() [1/3]

◆ ERectangleGauge() [2/3]

◆ ERectangleGauge() [3/3]

Member Function Documentation

◆ CopyTo()

◆ DisableInnerFiltering()

◆ GetMinNumFitSamples()

◆ GetSampleLeftEdge()

◆ GetSampleLowerEdge()

◆ GetSampleRightEdge()

◆ GetSampleUpperEdge()

◆ IsInnerFilteringEnabled()

◆ Measure() [1/4]

◆ Measure() [2/4]

◆ Measure() [3/4]

◆ Measure() [4/4]

◆ SetMinNumFitSamples() [1/2]

◆ SetMinNumFitSamples() [2/2]

Property Documentation

◆ ActiveEdges

◆ AvailableEditionModes

◆ HVConstraint

◆ InnerFilteringThreshold

◆ KnownAngle

◆ Measured

◆ MeasuredRectangle

◆ MinAmplitude

◆ MinArea

◆ MinNumFitSamples

◆ Nominal

◆ NumSamples

◆ NumSamplesLeftEdge

◆ NumSamplesLowerEdge

◆ NumSamplesRightEdge

◆ NumSamplesUpperEdge

◆ Rectangle

◆ RectangularSamplingArea

◆ Smoothing

◆ Thickness

◆ Threshold

◆ Tolerance

◆ TransitionChoice

◆ TransitionIndex

◆ TransitionType

◆ Type