inra.ijpb.measure.region2d

Class Centroid

java.lang.Object

inra.ijpb.algo.AlgoStub

inra.ijpb.measure.region2d.RegionAnalyzer2D<Point2D>

inra.ijpb.measure.region2d.Centroid

All Implemented Interfaces:

Algo, RegionAnalyzer<Point2D>

public class Centroid
extends RegionAnalyzer2D<Point2D>

Computes centroid position of regions within binary or label images.

Author:

dlegland

See Also:

EquivalentEllipse, Centroid3D

Constructor Summary

Constructors

Constructor and Description
Centroid() Default constructor

Method Summary

Modifier and Type	Method and Description
Point2D[]	analyzeRegions(ij.process.ImageProcessor image, int[] labels, ij.measure.Calibration calib) Computes centroid of each region in input label image.
static double[][]	centroids(ij.process.ImageProcessor labelImage, int[] labels) Computes centroid of each label in input image and returns the result as an array of double for each label.
static Point2D[]	centroids(ij.process.ImageProcessor labelImage, int[] labels, ij.measure.Calibration calib) Computes centroid of each label in input image and returns the result as an array of double for each label.
ij.measure.ResultsTable	createTable(Map<Integer,Point2D> map) Utility method that transforms the mapping between labels and Point2D instances into a ResultsTable that can be displayed with ImageJ.

Methods inherited from class inra.ijpb.measure.region2d.RegionAnalyzer2D

analyzeRegions, analyzeRegions, computeTable

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

Constructor Detail

Centroid

public Centroid()

Default constructor

Method Detail

centroids

public static final Point2D[] centroids(ij.process.ImageProcessor labelImage,
                                        int[] labels,
                                        ij.measure.Calibration calib)

Computes centroid of each label in input image and returns the result as an array of double for each label.

Parameters:

labelImage - the input image containing label of particles

labels - the array of unique labels in image the number of directions to process, either 2 or 4

calib - the calibration of the image

Returns:

an array containing for each label, the coordinates of the centroid, in calibrated coordinates

centroids

public static final double[][] centroids(ij.process.ImageProcessor labelImage,
                                         int[] labels)

Computes centroid of each label in input image and returns the result as an array of double for each label. This version does not take into account the spatial calibration, and returns the centroids in pixel coordinates.

Parameters:

labelImage - the input image containing label of particles

labels - the array of unique labels in image the number of directions to process, either 2 or 4

Returns:

an array containing for each label, the coordinates of the centroid, in pixel coordinates

createTable

public ij.measure.ResultsTable createTable(Map<Integer,Point2D> map)

Utility method that transforms the mapping between labels and Point2D instances into a ResultsTable that can be displayed with ImageJ.

Parameters:

map - the mapping between labels and centroids

Returns:

a ResultsTable that can be displayed with ImageJ.

analyzeRegions

public Point2D[] analyzeRegions(ij.process.ImageProcessor image,
                                int[] labels,
                                ij.measure.Calibration calib)

Computes centroid of each region in input label image.

Specified by:

analyzeRegions in class RegionAnalyzer2D<Point2D>

Parameters:

image - the input image containing label of particles

labels - the array of labels within the image

calib - the calibration of the image

Returns:

an array of Point2D representing the calibrated centroid coordinates