Projection Class Reference

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

Public Member Functions
None	Projection (self, cvb.ImagePlane plane, cvb.Area2D aoi, int mode, float density=1.0)
	Create a projection object.
List[cvb.foundation.EdgeResult]	calculate_zero_crossings (self)
	Gets all the zero crossings, that are in the projection.
cvb.foundation.Projection	derive (self)
	Create derivative of this projection.
cvb.foundation.Projection	filter (self, List[int] kernel)
	Filter this projection using a 1D filter kernel.
cvb.foundation.Projection	to_average_projection (self)
	Create a new averaged projection from this one.

Properties
	mode = property
	int: The projection mode (see cvb.foundation.ProjectionMode).
	values = property
	List[cvb.foundation.ProjectionValue]: Retrieve the values of the projection.

Detailed Description

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

Constructor & Destructor Documentation

Projection()

None Projection	(		self,
		cvb.ImagePlane	plane,
		cvb.Area2D	aoi,
		int	mode,
		float	density = 1.0 )

Create a projection object.

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.

Parameters

plane : cvb.ImagePlane Image plane to create the projection from.

aoi : cvb.Area2D Area of interest to scan.

mode : int Mode to use, cvb.foundation.ProjectionMode.Sum by default.

density : float Density at which to scan. This is a percentage value how many pixels to process: 0.0 means 0% and 1.0 (default value) means 100%.

Member Function Documentation

calculate_zero_crossings()

List[cvb.foundation.EdgeResult] calculate_zero_crossings

(

self

)

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

Returns

List[cvb.foundation.EdgeResult] List containing the zero crossings as EdgeResult.

derive()

cvb.foundation.Projection derive

(

self

)

Create derivative of this projection.

Returns

cvb.foundation.Projection New projection containing the derivative of this projection.

filter()

cvb.foundation.Projection filter	(		self,
		List[int]	kernel )

Filter this projection using a 1D filter kernel.

Parameters

kernel : List[int] Filter kernel to use.

Returns

cvb.foundation.Projection New projection containing the filtered projection.

to_average_projection()

cvb.foundation.Projection to_average_projection

(

self

)

Create a new averaged projection from this one.

Returns

cvb.foundation.Projection The averaged projection object.

Property Documentation

values

values = property

static

List[cvb.foundation.ProjectionValue]: Retrieve the values of the projection.

Returns ProjectionValue list.