Package qupath.opencv.features

Class DelaunayTriangulation

java.lang.Object

qupath.opencv.features.DelaunayTriangulation

All Implemented Interfaces:

PathObjectConnectionGroup

public class DelaunayTriangulation
extends Object
implements PathObjectConnectionGroup

Compute Delaunay triangulation using OpenCV.

Author:

Pete Bankhead

Constructor Summary

Constructors

Constructor	Description
DelaunayTriangulation(List<PathObject> pathObjects, double pixelWidth, double pixelHeight, double distanceThresholdPixels, boolean limitByClass)	Compute Delaunay triangulation - optionally omitting links above a fixed distance.

Method Summary

Modifier and Type	Method	Description
void	addClusterMeasurements()	Compute mean measurements from clustering all connected objects.
void	addNodeMeasurements()	Add Delaunay measurements to each pathObject.
boolean	containsObject(PathObject pathObject)	Returns true if the specified PathObject is contained within this group.
List<Set<PathObject>>	getConnectedClusters()	Get a list of PathObjects that are connected to each other in this triangulation.
Collection<double[]>	getConnectedNodes(Collection<PathObject> pathObjects, Collection<double[]> connections)	Deprecated.
Collection<PathObject>	getConnectedNodes(PathObject pathObject, Collection<PathObject> list)	Get all the PathObjects immediately connected to the specified object, adding the points into a collection (or creating a new one).
List<PathObject>	getConnectedObjects(PathObject pathObject)	Get all the connections to a specified PathObject stored in this group.
Collection<PathObject>	getPathObjects()	Get an unmodifiable collection containing all the PathObjects contained within this group.

Methods inherited from class java.lang.Object

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

Methods inherited from interface qupath.lib.objects.PathObjectConnectionGroup

getPathObjectsForRegion

Constructor Details

DelaunayTriangulation

public DelaunayTriangulation(List<PathObject> pathObjects,
 double pixelWidth,
 double pixelHeight,
 double distanceThresholdPixels,
 boolean limitByClass)

Compute Delaunay triangulation - optionally omitting links above a fixed distance.

Parameters:

pathObjects -

pixelWidth -

pixelHeight -

distanceThresholdPixels - - Note, this is in *pixels* (and not scaled according to pixelWidth & pixelHeight)

limitByClass -

Method Details

getConnectedObjects

public List<PathObject> getConnectedObjects(PathObject pathObject)

Description copied from interface: PathObjectConnectionGroup

Get all the connections to a specified PathObject stored in this group.

If containsObject(pathObject) returns null, this will return an empty list (and not null).

Specified by:

getConnectedObjects in interface PathObjectConnectionGroup

Parameters:

pathObject -

Returns:

getPathObjects

public Collection<PathObject> getPathObjects()

Description copied from interface: PathObjectConnectionGroup

Get an unmodifiable collection containing all the PathObjects contained within this group.

Specified by:

getPathObjects in interface PathObjectConnectionGroup

Returns:

getConnectedNodes

@Deprecated
public Collection<double[]> getConnectedNodes(Collection<PathObject> pathObjects,
 Collection<double[]> connections)

Deprecated.

Get connected nodes. Returned as a list where pairs are consecutive, i.e. get(i) links to get(i+1) (although get(i+1) doesn't necessarily link to get(i+2)...)

Parameters:

pathObjects -

connections -

Returns:

getConnectedNodes

public Collection<PathObject> getConnectedNodes(PathObject pathObject,
 Collection<PathObject> list)

Get all the PathObjects immediately connected to the specified object, adding the points into a collection (or creating a new one).

Parameters:

pathObject -

list -

Returns:

getConnectedClusters

public List<Set<PathObject>> getConnectedClusters()

Get a list of PathObjects that are connected to each other in this triangulation. Warning: This list is recomputed on every call, therefore references should be cached by the caller if necessary to avoid too much recomputation.

Returns:

addClusterMeasurements

public void addClusterMeasurements()

Compute mean measurements from clustering all connected objects.

addNodeMeasurements

public void addNodeMeasurements()

Add Delaunay measurements to each pathObject.

containsObject

public boolean containsObject(PathObject pathObject)

Description copied from interface: PathObjectConnectionGroup

Returns true if the specified PathObject is contained within this group.

Specified by:

containsObject in interface PathObjectConnectionGroup

Parameters:

pathObject -

Returns: