Package georegression.struct.homography

Class Homography2D_F64

java.lang.Object

org.ejml.data.DMatrix3x3

georegression.struct.Matrix3x3_F64

georegression.struct.homography.Homography2D_F64

All Implemented Interfaces:

Homography<Homography2D_F64>, InvertibleTransform<Homography2D_F64>, Serializable, DMatrix, DMatrixFixed, Matrix

public class Homography2D_F64
extends Matrix3x3_F64
implements Homography<Homography2D_F64>

Describes a homography transform in 2D.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.ejml.data.DMatrix3x3

a11, a12, a13, a21, a22, a23, a31, a32, a33

Constructor Summary

Constructors

Constructor	Description
Homography2D_F64()
Homography2D_F64(double a11, double a12, double a13, double a21, double a22, double a23, double a31, double a32, double a33)
Homography2D_F64(Homography2D_F64 a)

Method Summary

Modifier and Type	Method	Description
Homography2D_F64	concat(Homography2D_F64 second, @Nullable Homography2D_F64 ret)	Computes a transform which is the equivalent to applying 'this' then the 'second' transform.
Homography2D_F64	copy()
Homography2D_F64	createInstance()	Creates a new instance of the same SpecialEuclidean as this class.
DMatrixRMaj	ddrm()
DMatrixRMaj	ddrm(@Nullable DMatrixRMaj output)
int	getDimension()	Returns the dimension of the space which this transform operates on.
Homography2D_F64	invert(@Nullable Homography2D_F64 ret)	Computes a transform which is the inverse of this transform.
void	reset()	Sets the transform to its initial state of no transform.
Homography2D_F64	setTo(Homography2D_F64 target)	Assigns 'this' to the value of target.
String	toString()

Methods inherited from class georegression.struct.Matrix3x3_F64

getA11, getA12, getA13, getA21, getA22, getA23, getA31, getA32, getA33, scale, setA11, setA12, setA13, setA21, setA22, setA23, setA31, setA32, setA33, setTo, setTo, zero

Methods inherited from class org.ejml.data.DMatrix3x3

createLike, get, getNumCols, getNumElements, getNumRows, getType, print, print, set, setTo, setTo, unsafe_get, unsafe_set

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.ejml.data.DMatrixFixed

create

Methods inherited from interface georegression.struct.InvertibleTransform

concatInvert, invertConcat

Constructor Details

Homography2D_F64

public Homography2D_F64(double a11,
 double a12,
 double a13,
 double a21,
 double a22,
 double a23,
 double a31,
 double a32,
 double a33)

Homography2D_F64

public Homography2D_F64(Homography2D_F64 a)

Homography2D_F64

public Homography2D_F64()

Method Details

getDimension

public int getDimension()

Description copied from interface: InvertibleTransform

Returns the dimension of the space which this transform operates on.

Specified by:

getDimension in interface InvertibleTransform<Homography2D_F64>

Returns:

space's dimension

createInstance

public Homography2D_F64 createInstance()

Description copied from interface: InvertibleTransform

Creates a new instance of the same SpecialEuclidean as this class.

Specified by:

createInstance in interface InvertibleTransform<Homography2D_F64>

Returns:

A new instance.

setTo

public Homography2D_F64 setTo(Homography2D_F64 target)

Description copied from interface: InvertibleTransform

Assigns 'this' to the value of target.

Specified by:

setTo in interface InvertibleTransform<Homography2D_F64>

Parameters:

target - The new value of 'this'.

Returns:

A reference to 'this' to enable chaining

concat

public Homography2D_F64 concat(Homography2D_F64 second,
 @Nullable
 @Nullable Homography2D_F64 ret)

Description copied from interface: InvertibleTransform

Computes a transform which is the equivalent to applying 'this' then the 'second' transform.

For example:

Point A = tran2( tran1( A ) );
Point A = tran12( A );

where tran12 = tran1.concat( tran2 , null );

NOTE: 'second', 'result', and 'this' must all be unique instances.

Specified by:

concat in interface InvertibleTransform<Homography2D_F64>

Parameters:

second - The second transform which is applied. Not modified.

ret - A transform which is equivalent to applying the first then the second. If null then a new instance is declared. Modified.

Returns:

The equivalent transform.

invert

public Homography2D_F64 invert(@Nullable
 @Nullable Homography2D_F64 ret)

Description copied from interface: InvertibleTransform

Computes a transform which is the inverse of this transform. The 'this' matrix can be passed in as an input.

Example:
Point A = tran(B);
Point B = inv(A);

where inv = invert( tran );

Specified by:

invert in interface InvertibleTransform<Homography2D_F64>

Parameters:

ret - Where the inverse will be stored. If null a new instance is created. Modified.

Returns:

The inverse transform.

reset

public void reset()

Description copied from interface: InvertibleTransform

Sets the transform to its initial state of no transform.

Specified by:

reset in interface InvertibleTransform<Homography2D_F64>

ddrm

public DMatrixRMaj ddrm()

ddrm

public DMatrixRMaj ddrm(@Nullable
 @Nullable DMatrixRMaj output)

copy

public Homography2D_F64 copy()

Specified by:

copy in interface Matrix

Overrides:

copy in class DMatrix3x3

toString

public String toString()

Overrides:

toString in class Object