Functions
cvbbool_t	AppendResults (EDGERESULTS In1, EDGERESULTS In2, EDGERESULTS &Out)
	Appends the results of two EDGERESULTS objects to the new object Out. More...

cvbbool_t	EdgeResult (EDGERESULTS Results, size_t index, double &x, double &y, double &q)
	Gets an edge result from the given Result object handle. More...

size_t	EdgeResultsCount (EDGERESULTS Results)
	Returns the number of edge results stored in the EDGERESULTS object. More...

cvbbool_t	IsEdgeResults (EDGERESULTS Results)
	Checks whether the given object handle points to an EDGERESULTS object or not. More...

cvbbool_t	ReleaseEdgeResults (EDGERESULTS Results)
	Decreases the reference count of an EDGERESULTS object. More...

cvbbool_t	ShareEdgeResults (EDGERESULTS Results)
	Increments the reference counter for an EDGERESULTS object. More...

cvbbool_t	SortResultsByAbsQuality (EDGERESULTS In)
	Sorts the In results by their absolute quality value in descent order. More...

cvbbool_t	SortResultsByPosition (EDGERESULTS In, double px, double py)
	Sorts the In results by a direction vector px, py. More...

cvbbool_t	SortResultsByQuality (EDGERESULTS In)
	Sorts the In results by their quality value in descending order. More...

cvbbool_t	ThresholdResults (EDGERESULTS In, double Min, double Max, EDGERESULTS &Out)
	Creates a new EDGERESULTS object by thresholding the quality of the edge results in an input EDGERESULTS object. More...

Detailed Description

Function Documentation

◆ AppendResults()

cvbbool_t AppendResults	(	EDGERESULTS	In1,
		EDGERESULTS	In2,
		EDGERESULTS &	Out
	)

Appends the results of two EDGERESULTS objects to the new object Out.

Use this function if you want to concatenate the results of two different processing results into a single edge result.

This function is thread safe.

Attention: If the Out object is not longer needed, release the object using ReleaseEdgeResults.

Parameters

[in]	In1	Handle of first EDGERESULTS object to be concatenated.
[in]	In2	Handle of second EDGERESULTS object to be concatenated.
[out]	Out	New EDGERESULTS object containing the union of results from In1 and In2.

Returns: TRUE if succeeded, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: EdgeResult, EdgeResultsCount, ReleaseEdgeResults

◆ EdgeResult()

cvbbool_t EdgeResult	(	EDGERESULTS	Results,
		size_t	index,
		double &	x,
		double &	y,
		double &	q
	)

Gets an edge result from the given Result object handle.

Index access is zero based (range from 0 to EdgeResultsCount - 1).

This function is thread safe.

Parameters

[in]	Results	Handle of EDGERESULTS object.
[in]	index	Zero based index.
[out]	x	X-position of the edge.
[out]	y	Y-position of the edge.
[out]	q	Quality of the edge.

Returns: TRUE if succeeded, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: EdgeResultsCount

Example: Please refer to ZeroCrossings for an example.

◆ EdgeResultsCount()

size_t EdgeResultsCount ( EDGERESULTS Results )

Returns the number of edge results stored in the EDGERESULTS object.

Use EdgeResult to get the actual results.

This function is thread safe.

Parameters

[in] Results Handle of EDGERESULTS object.

Returns: Number of results stored in the EDGERESULTS object; 0 if empty or on error.

Supported platforms:: Win32
Win64

Related Topics:: EdgeResult

Example: Please refer to ZeroCrossings for an example.

◆ IsEdgeResults()

cvbbool_t IsEdgeResults ( EDGERESULTS Results )

Checks whether the given object handle points to an EDGERESULTS object or not.

Attention: This method should be used with caution as it cannot be guaranteed to work properly with random input.

Parameters

[in] Results Handle of object to be checked.

Returns: TRUE if object is an EDGERESULTS handle, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: ShareEdgeResults, ReleaseEdgeResults

◆ ReleaseEdgeResults()

cvbbool_t ReleaseEdgeResults ( EDGERESULTS Results )

Decreases the reference count of an EDGERESULTS object.

When the counter reaches zero the object will be destroyed and the memory is released.

The return value is different to the ReleaseObject function: it always states TRUE if the function call succeeded. It does necessary mean that the object is destroyed.

This function is thread safe.

Parameters

[in] Results Handle of EDGERESULTS object to release.

Returns: TRUE if succeeded, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: ShareEdgeResults

◆ ShareEdgeResults()

cvbbool_t ShareEdgeResults ( EDGERESULTS Results )

Increments the reference counter for an EDGERESULTS object.

You share a Results object if want to share ownership. Call ReleaseEdgeResults if your component doesn't need the resource anymore.

This function is thread safe.

Attention: When the Results object is not needed anymore call ReleaseEdgeResults to decrement the reference counter to prevent memory leaks. When the counter reaches zero the memory is automatically deallocated.

Parameters

[in] Results Handle of EDGERESULTS object to share.

Returns: TRUE if succeeded, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: ReleaseEdgeResults

◆ SortResultsByAbsQuality()

cvbbool_t SortResultsByAbsQuality ( EDGERESULTS In )

Sorts the In results by their absolute quality value in descent order.

As the sorting is done with the absolute value of the quality, positive and negative edges are not separated as in the SortResultsByQuality function.

This function is only thread safe if only one thread works on the In object.

Parameters

[in] In Handle of EDGERESULTS object to sort.

Returns: TRUE if succeeded, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: SortResultsByQuality, #SortResultsByPosition

◆ SortResultsByPosition()

cvbbool_t SortResultsByPosition	(	EDGERESULTS	In,
		double	px,
		double	py
	)

Sorts the In results by a direction vector px, py.

The vector used to compare the position is passed by its two components

Examples calculations:

To sort the results from left to right use 0,1.
To sort them from bottom to top use 0,-1.
To sort them in 45° direction use 1,1.
To sort them in 225° direction use 1,-1.

This function is only thread safe if only one thread works on the In object.

Parameters

[in]	In	Handle of EDGERESULTS object.
[in]	px	X-component of the sort vector.
[in]	py	Y-component of the sort vector.

Returns: TRUE if succeeded, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: SortResultsByQuality, SortResultsByAbsQuality

◆ SortResultsByQuality()

cvbbool_t SortResultsByQuality ( EDGERESULTS In )

Sorts the In results by their quality value in descending order.

As negative edges have a negative gradient they also have a negative quality. Positive edges thus have a positive quality. This means that positive edges are followed by negative edges in the sorted range. If you don't want to have that behavior use the SortResultsByAbsQuality function.

This function is only thread safe if only one thread works on the In object.

Parameters

[in] In Handle of EDGERESULTS object to sort.

Returns: TRUE if succeeded, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: SortResultsByAbsQuality, SortResultsByPosition

◆ ThresholdResults()

cvbbool_t ThresholdResults	(	EDGERESULTS	In,
		double	Min,
		double	Max,
		EDGERESULTS &	Out
	)

Creates a new EDGERESULTS object by thresholding the quality of the edge results in an input EDGERESULTS object.

All results within Min >= EdgeQuality and EdgeQuality <= Max are copied to the Out object.

This function is thread safe.

Attention: If the Out object is not longer needed, release the object using ReleaseEdgeResults.

Parameters

[in]	In	Handle of EDGERESULTS object to threshold.
[in]	Min	Minimum threshold.
[in]	Max	Maximum threshold.
[out]	Out	New EDGERESULTS object containing all thresholded results.

Returns: TRUE if succeeded, FALSE otherwise.

Supported platforms:: Win32
Win64

Related Topics:: EdgeResult, EdgeResultsCount


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Functions

Detailed Description

Function Documentation

◆ AppendResults()

◆ EdgeResult()

◆ EdgeResultsCount()

◆ IsEdgeResults()

◆ ReleaseEdgeResults()

◆ ShareEdgeResults()

◆ SortResultsByAbsQuality()

◆ SortResultsByPosition()

◆ SortResultsByQuality()

◆ ThresholdResults()