Package boofcv.alg.feature.detect.intensity.impl

Class ImplSsdCornerBase<D extends ImageGray<D>,D2 extends ImageGray<D2>>

java.lang.Object

boofcv.alg.feature.detect.intensity.impl.ImplSsdCornerBase<D,D2>

All Implemented Interfaces:

FeatureIntensity<D>, GradientCornerIntensity<D>

Direct Known Subclasses:

ImplSsdCornerBox, ImplSsdCornerWeighted_F32, ImplSsdCornerWeighted_F32_MT, ImplSsdCornerWeighted_S16, ImplSsdCornerWeighted_S16_MT

public abstract class ImplSsdCornerBase<D extends ImageGray<D>,D2 extends ImageGray<D2>>
extends Object
implements GradientCornerIntensity<D>

Several corner detector algorithms work by computing a symmetric matrix whose elements are composed of the convolution of the image's gradient squared. This is done for X*X, X*Y, and X*X. Once the matrix has been constructed it is used to estimate how corner like the pixel under consideration is. This class provides a generalized interface for performing these calculations in an optimized manor.

NOTE: Image borders are not processed. The zeros in the image border need to be taken in account when extract features using algorithms such as non-max suppression.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ImplSsdCornerBase.CornerIntensity_F32
static interface	ImplSsdCornerBase.CornerIntensity_S32

Field Summary

Fields

Modifier and Type	Field	Description
protected D	derivX
protected D	derivY
protected D2	horizXX
protected D2	horizXY
protected D2	horizYY
protected int	radius

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ImplSsdCornerBase(int windowRadius, Class<D> derivType, Class<D2> secondDerivType)

Method Summary

Modifier and Type	Method	Description
int	getIgnoreBorder()	Size of the region surrounding the image's border in which pixels are not processed.
Class<D>	getInputType()	Type of input image.
int	getRadius()	Returns the radius of the feature being computed.
protected void	setImageShape(int imageWidth, int imageHeight)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface boofcv.alg.feature.detect.intensity.GradientCornerIntensity

process

Field Details

derivX

protected D extends ImageGray<D> derivX

derivY

protected D extends ImageGray<D> derivY

radius

protected int radius

horizXX

protected D2 extends ImageGray<D2> horizXX

horizXY

protected D2 extends ImageGray<D2> horizXY

horizYY

protected D2 extends ImageGray<D2> horizYY

Constructor Details

ImplSsdCornerBase

protected ImplSsdCornerBase(int windowRadius,
 Class<D> derivType,
 Class<D2> secondDerivType)

Method Details

setImageShape

protected void setImageShape(int imageWidth,
 int imageHeight)

getRadius

public int getRadius()

Description copied from interface: FeatureIntensity

Returns the radius of the feature being computed. Features are square in shape with a width = 2*radius+1.

Specified by:

getRadius in interface FeatureIntensity<D extends ImageGray<D>>

Returns:

Radius of detected features.

getIgnoreBorder

public int getIgnoreBorder()

Description copied from interface: FeatureIntensity

Size of the region surrounding the image's border in which pixels are not processed.

Specified by:

getIgnoreBorder in interface FeatureIntensity<D extends ImageGray<D>>

Returns:

The ignore border around the image.

getInputType

public Class<D> getInputType()

Description copied from interface: GradientCornerIntensity

Type of input image.

Specified by:

getInputType in interface GradientCornerIntensity<D extends ImageGray<D>>