inra.ijpb.binary.distmap

Class ChamferMask3DW4

java.lang.Object

inra.ijpb.binary.distmap.ChamferMask3D

inra.ijpb.binary.distmap.ChamferMask3DW4

public class ChamferMask3DW4
extends ChamferMask3D

Implementation of Chamfer Weights for 3D images that manages four types of offsets. Offsets correspond to:

• orthogonal neighbors
• square-diagonal neighbors
• cube-diagonal neighbors
• shift by a permutation of (+/-1, +/-1, +/-2)

Author:

dlegland

See Also:

ChamferMask3DW3, ChamferMask3DW3Float

Nested Class Summary

Nested classes/interfaces inherited from class inra.ijpb.binary.distmap.ChamferMask3D

ChamferMask3D.FloatOffset, ChamferMask3D.ShortOffset

Field Summary

Fields inherited from class inra.ijpb.binary.distmap.ChamferMask3D

BORGEFORS, CHESSBOARD, CITY_BLOCK, QUASI_EUCLIDEAN, SVENSSON_3_4_5_7

Constructor Summary

Constructors

Constructor and Description
ChamferMask3DW4(int a, int b, int c, int e) Creates a new ChamferWeights3D object by specifying the four weights associated to the four different kind of offsets.
ChamferMask3DW4(short[] weights) Creates a new ChamferWeights3D object by specifying the four weights associated to the four different kind of offsets.

Method Summary

Modifier and Type	Method and Description
Collection<ChamferMask3D.ShortOffset>	getBackwardOffsets()
Collection<ChamferMask3D.ShortOffset>	getForwardOffsets()
short	getShortNormalizationWeight()

Methods inherited from class inra.ijpb.binary.distmap.ChamferMask3D

fromWeights, fromWeights, fromWeights, getBackwardFloatOffsets, getFloatOffsets, getForwardFloatOffsets, getNormalizationWeight, getOffsets

Methods inherited from class java.lang.Object

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

Constructor Detail

ChamferMask3DW4

public ChamferMask3DW4(int a,
                       int b,
                       int c,
                       int e)

Creates a new ChamferWeights3D object by specifying the four weights associated to the four different kind of offsets. Notations are from Svensson and Borgefors.

Parameters:

a - the weight associated to orthogonal neighbors

b - the weight associated to square-diagonal neighbors

c - the weight associated to cube-diagonal neighbors

e - the weight associated to (1,1,2) vectors and its permutations and symmetries

ChamferMask3DW4

public ChamferMask3DW4(short[] weights)

Creates a new ChamferWeights3D object by specifying the four weights associated to the four different kind of offsets. Notations are from Svensson and Borgefors.

Parameters:

weights - the weight associated to the four different kind of offsets.

Method Detail

getForwardOffsets

public Collection<ChamferMask3D.ShortOffset> getForwardOffsets()

Specified by:

getForwardOffsets in class ChamferMask3D

Returns:

the set of offsets defined by this ChamferWeights3D for forward iteration using integer weights.

getBackwardOffsets

public Collection<ChamferMask3D.ShortOffset> getBackwardOffsets()

Specified by:

getBackwardOffsets in class ChamferMask3D

Returns:

the set of offsets defined by this ChamferWeights3D for backward iteration using integer weights.

getShortNormalizationWeight

public short getShortNormalizationWeight()

Specified by:

getShortNormalizationWeight in class ChamferMask3D

Returns:

the weight associated to orthogonal offsets, that can be used to normalize the distance map.