inra.ijpb.binary.geodesic

Class GeodesicDistanceTransformFloat

java.lang.Object

inra.ijpb.algo.AlgoStub

inra.ijpb.binary.geodesic.GeodesicDistanceTransformFloat

All Implemented Interfaces:

Algo, GeodesicDistanceTransform

public class GeodesicDistanceTransformFloat
extends AlgoStub
implements GeodesicDistanceTransform

Computation of Chamfer geodesic distances using floating point array for storing result. This implementation is based on iteration of forward-backward passes, until idempotence. The "hybrid" implementation is usually more efficient for complex images.

Author:

David Legland

See Also:

GeodesicDistanceTransformFloatHybrid, GeodesicDistanceTransformShort

Field Summary

Fields

Modifier and Type	Field and Description
static float	BACKGROUND The value associated to the background in the result image.
static float	MAX_DIST The value used to initialize the distance map, corresponding to positive infinity.

Constructor Summary

Constructors

Constructor and Description
GeodesicDistanceTransformFloat(ChamferMask2D mask) Creates a new algorithm for propagating geodesic distances.
GeodesicDistanceTransformFloat(ChamferMask2D mask, boolean normalizeMap) Creates a new algorithm for propagating geodesic distances.
GeodesicDistanceTransformFloat(float[] weights) Deprecated.
GeodesicDistanceTransformFloat(float[] weights, boolean normalizeMap) Deprecated.

Method Summary

Modifier and Type	Method and Description
ij.process.ImageProcessor	geodesicDistanceMap(ij.process.ImageProcessor marker, ij.process.ImageProcessor labelImage) Computes the geodesic distance function for each pixel in mask label image, using the given binary marker image.

Methods inherited from class inra.ijpb.algo.AlgoStub

addAlgoListener, fireProgressChanged, fireProgressChanged, fireStatusChanged, fireStatusChanged, removeAlgoListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface inra.ijpb.algo.Algo

addAlgoListener, removeAlgoListener

Field Detail

MAX_DIST

public static final float MAX_DIST

The value used to initialize the distance map, corresponding to positive infinity.

See Also:

Constant Field Values

BACKGROUND

public static final float BACKGROUND

The value associated to the background in the result image.

See Also:

Constant Field Values

Constructor Detail

GeodesicDistanceTransformFloat

public GeodesicDistanceTransformFloat(ChamferMask2D mask)

Creates a new algorithm for propagating geodesic distances.

Parameters:

mask - the chamfer mask to use for propagating distances

GeodesicDistanceTransformFloat

public GeodesicDistanceTransformFloat(ChamferMask2D mask,
                                      boolean normalizeMap)

Creates a new algorithm for propagating geodesic distances.

Parameters:

mask - the chamfer mask to use for propagating distances

normalizeMap - the flag for normalization

GeodesicDistanceTransformFloat

@Deprecated
public GeodesicDistanceTransformFloat(float[] weights)

Deprecated.

Creates a new algorithm.

Parameters:

weights - the weights to use for propagating distances

GeodesicDistanceTransformFloat

@Deprecated
public GeodesicDistanceTransformFloat(float[] weights,
                                                  boolean normalizeMap)

Deprecated.

Creates a new algorithm.

Parameters:

weights - the weights to use for propagating distances

normalizeMap - the flag for normalization

Method Detail

geodesicDistanceMap

public ij.process.ImageProcessor geodesicDistanceMap(ij.process.ImageProcessor marker,
                                                     ij.process.ImageProcessor labelImage)

Computes the geodesic distance function for each pixel in mask label image, using the given binary marker image. Mask and marker should be ImageProcessor the same size and containing integer values. The function returns a new FloatProcessor the same size as the input, with values greater or equal to zero.

Specified by:

geodesicDistanceMap in interface GeodesicDistanceTransform

Parameters:

marker - the binary marker image

labelImage - the label image used as mask

Returns:

the geodesic distance map from the marker image within each label of the mask

See Also:

GeodesicDistanceTransform.geodesicDistanceMap(ij.process.ImageProcessor, ij.process.ImageProcessor)