Projection Class Reference

Projection that the Edge analysis of Common Vision Blox is using. More...

#include <cvb/foundation/edge.hpp>

Public Member Functions
	Projection (const ImagePlane &plane, Area2D aoi, ProjectionMode mode=ProjectionMode::Sum, double density=1.0)
	Create a projection object. More...
std::vector< ProjectionValue >	Values () const
	Retrieve the values of the projection. More...
void *	Handle () const noexcept
	Classic API PROJECTIONEX handle. More...
std::vector< EdgeResult >	CalculateZeroCrossings ()
	Get all the zero crossings, that are in the projection. More...
std::unique_ptr< Projection >	Derive ()
	Create derivative of this projection. More...
template<class RANGE >
TypedRange< std::unique_ptr< Projection >, int, RANGE >::type	Filter (const RANGE &kernel)
	Filter this projection using a 1D filter kernel. More...
std::unique_ptr< Projection >	ToAverageProjection ()
	Create a new averaged projection from this one. More...
ProjectionMode	Mode () const noexcept
	Gets the mode of the projection. More...

Static Public Member Functions
static std::unique_ptr< Projection >	Create (const ImagePlane &plane, Area2D aoi, ProjectionMode mode=ProjectionMode::Sum, double density=1.0)
	Create a projection object. More...
static std::unique_ptr< Projection >	FromHandle (HandleGuard< Projection > &&guard, ProjectionMode mode)
	Creates projection from a classic API handle. More...

Detailed Description

Projection that the Edge analysis of Common Vision Blox is using.

The projections are what is being used internally inside the Edge finding algorithms and the Projection object may in fact be used to build a customized edge detection.

Constructor & Destructor Documentation

Projection()

Projection ( const ImagePlane &  plane, Area2D  aoi, ProjectionMode  mode = ProjectionMode::Sum, double  density = 1.0  )

inline

Create a projection object.

Parameters

[in]	plane	Image plane to create the projection from.
[in]	aoi	Area of interest to scan.
[in]	mode	Mode to use.
[in]	density	Density at which to scan. This is a percentage value how many pixels to process: 0.0 means 0% and 1.0 means 100%.

Exceptions

Any	exception derived from std::exception including CvbException.

Member Function Documentation

CalculateZeroCrossings()

std::vector< EdgeResult > CalculateZeroCrossings ( )

inline

Get all the zero crossings, that are in the projection.

Returns

Array containing the zero crossings as vector of EdgeResult.

Exceptions

Any	exception derived from std::exception including CvbException.

Create()

static std::unique_ptr< Projection > Create ( const ImagePlane &  plane, Area2D  aoi, ProjectionMode  mode = ProjectionMode::Sum, double  density = 1.0  )

inlinestatic

Create a projection object.

Parameters

[in]	plane	Image plane to create the projection from.
[in]	aoi	Area of interest to scan.
[in]	mode	Mode to use.
[in]	density	Density at which to scan. This is a percentage value how many pixels to process: 0.0 means 0% and 1.0 means 100%.

Returns

Pointer to the projection object.

Exceptions

Any	exception derived from std::exception including CvbException.

Derive()

std::unique_ptr< Projection > Derive ( )

inline

Create derivative of this projection.

Returns

New projection containing the derivative of this projection.

Exceptions

Any	exception derived from std::exception including CvbException.

Filter()

TypedRange< std::unique_ptr< Projection >, int, RANGE >::type Filter ( const RANGE &  kernel )

inline

Filter this projection using a 1D filter kernel.

Parameters

[in]

kernel

Filter kernel to use.

Returns

New projection containing the filtered projection.

Exceptions

Any	exception derived from std::exception including CvbException.

FromHandle()

static std::unique_ptr< Projection > FromHandle ( HandleGuard< Projection > &&  guard, ProjectionMode  mode  )

inlinestatic

Creates projection from a classic API handle.

Parameters

[in]	guard	Life time guard for C-API handle.
[in]	mode	Mode to use.

Returns

The projection created from the classic API handle.

Exceptions

Any	exception derived from std::exception including CvbException.

The projection takes ownership of the handle, so you must share it before using this function.

Handle()

void * Handle ( ) const

inlinenoexcept

Classic API PROJECTIONEX handle.

Returns

Classic API handle.

Exceptions

Does	not throw any exception.

It is normally not necessary to work with this handle.

Mode()

ProjectionMode Mode ( ) const

inlinenoexcept

Gets the mode of the projection.

Returns

The projection mode.

Exceptions

Does	not throw any exception.

ToAverageProjection()

std::unique_ptr< Projection > ToAverageProjection ( )

inline

Create a new averaged projection from this one.

Returns

The averaged projection object.

Exceptions

Any	exception derived from std::exception including CvbException.

Values()

std::vector< ProjectionValue > Values ( ) const

inline

Retrieve the values of the projection.

Returns

Vector with the projection values.

Exceptions

Any	exception derived from std::exception including CvbException.