inra.ijpb.binary.distmap

Class DistanceTransform5x5Float

java.lang.Object

inra.ijpb.algo.AlgoStub

inra.ijpb.binary.distmap.DistanceTransform5x5Float

All Implemented Interfaces:

Algo, DistanceTransform

Deprecated.

replaced by ChamferDistanceTransform2DFloat (since 1.5.0)

@Deprecated
public class DistanceTransform5x5Float
extends AlgoStub
implements DistanceTransform

Computes Chamfer distances in a 5x5 neighborhood using a FloatProcessor object for storing result.

Uses 5x5 chamfer map, with two passes (one forward, one backward). Three different weights are provided for orthogonal, diagonal, and "chess-knight" moves. Weights equal to (5,7,11) usually give nice results.

Example of use:

	float[] floatWeights = ChamferWeights.CHESSKNIGHT.getFloatWeights();
	boolean normalize = true;
	DistanceTransform dt = new DistanceTransform5x5Float(floatWeights, normalize);
	ImageProcessor result = dt.distanceMap(inputImage);
	// or:
	ImagePlus resultPlus = BinaryImages.distanceMap(imagePlus, floatWeights, normalize);

Author:

David Legland

See Also:

BinaryImages.distanceMap(ImageProcessor, float[], boolean), DistanceTransform5x5Short, DistanceTransform

Constructor Summary

Constructors

Constructor and Description
DistanceTransform5x5Float() Deprecated. Default constructor with predefined chamfer weights.
DistanceTransform5x5Float(ChamferWeights weights) Deprecated. Constructor specifying the chamfer weights and the optional normalization.
DistanceTransform5x5Float(ChamferWeights weights, boolean normalize) Deprecated. Constructor specifying the chamfer weights and the optional normalization.
DistanceTransform5x5Float(float[] weights) Deprecated. Default constructor that specifies the chamfer weights.
DistanceTransform5x5Float(float[] weights, boolean normalize) Deprecated. Constructor specifying the chamfer weights and the optional normalization.

Method Summary

Modifier and Type	Method and Description
ij.process.FloatProcessor	distanceMap(ij.process.ImageProcessor labelImage) Deprecated. Computes the distance map of the distance to the nearest pixel with a different value.

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

Constructor Detail

DistanceTransform5x5Float

public DistanceTransform5x5Float()

Deprecated.

Default constructor with predefined chamfer weights.

DistanceTransform5x5Float

public DistanceTransform5x5Float(ChamferWeights weights)

Deprecated.

Constructor specifying the chamfer weights and the optional normalization.

Parameters:

weights - a set of chamfer weights with at least three values

DistanceTransform5x5Float

public DistanceTransform5x5Float(float[] weights)

Deprecated.

Default constructor that specifies the chamfer weights.

Parameters:

weights - an array of two weights for orthogonal and diagonal directions

DistanceTransform5x5Float

public DistanceTransform5x5Float(ChamferWeights weights,
                                 boolean normalize)

Deprecated.

Constructor specifying the chamfer weights and the optional normalization.

Parameters:

weights - an array of two weights for orthogonal and diagonal directions

normalize - flag indicating whether the final distance map should be normalized by the first weight

DistanceTransform5x5Float

public DistanceTransform5x5Float(float[] weights,
                                 boolean normalize)

Deprecated.

Constructor specifying the chamfer weights and the optional normalization.

Parameters:

weights - an array of two weights for orthogonal and diagonal directions

normalize - flag indicating whether the final distance map should be normalized by the first weight

Method Detail

distanceMap

public ij.process.FloatProcessor distanceMap(ij.process.ImageProcessor labelImage)

Deprecated.

Computes the distance map of the distance to the nearest pixel with a different value. The function returns a new short processor the same size as the input, with values greater or equal to zero.

Specified by:

distanceMap in interface DistanceTransform

Parameters:

labelImage - a label image with black pixels (0) as foreground

Returns:

a new instance of FloatProcessor containing:

• 0 for each background pixel
• the (strictly positive) distance to the nearest background pixel otherwise