de.lmu.ifi.dbs.jfeaturelib.pointDetector

Class FASTCornerDetector

java.lang.Object

de.lmu.ifi.dbs.jfeaturelib.pointDetector.FASTCornerDetector

All Implemented Interfaces:

Descriptor, PointDetector

public class FASTCornerDetector
extends Object
implements PointDetector

FAST Corner Detector FAST was first published By Edward Rosten in 2005, 2006:
- Fusing points and lines for high performance tracking (2005) and
- Machine learning for high-speed corner detection (2006). Please see http://www.edwardrosten.com/work/fast.html for links to the according papers, more information and other reference implementations. At this page you can also find BSD-licensed code. In case of using this code, the above copyright notive must retain the attribution to the author.

Author:

Edward Rosten, Robert Zelhofer

Nested Class Summary

Nested classes/interfaces inherited from interface de.lmu.ifi.dbs.jfeaturelib.Descriptor

Descriptor.Supports

Field Summary

Fields inherited from interface de.lmu.ifi.dbs.jfeaturelib.Descriptor

DOES_ALL

Constructor Summary

Constructors

Constructor and Description
FASTCornerDetector() Creates default FAST Corner Detector with threshold = 20 and test for 9 contiguous Pixels
FASTCornerDetector(int threshold) Creates Fast Corner Detector for 9 contiguous Pixels
FASTCornerDetector(int threshold, int fastNNumber) Creates FAST Corner Detector

Method Summary

Methods

Modifier and Type	Method and Description
void	addPropertyChangeListener(PropertyChangeListener listener) Adds a change listener to this descriptor.
List<ImagePoint>	getPoints()
void	run(ij.process.ImageProcessor ip) Start processing of this algorithm on the given image processor.
EnumSet<Descriptor.Supports>	supports() Determine the capabilities of this algorithm.

Methods inherited from class java.lang.Object

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

Constructor Detail

FASTCornerDetector

public FASTCornerDetector()

Creates default FAST Corner Detector with threshold = 20 and test for 9 contiguous Pixels

FASTCornerDetector

public FASTCornerDetector(int threshold)

Creates Fast Corner Detector for 9 contiguous Pixels

Parameters:

threshold - Threshold Value

FASTCornerDetector

public FASTCornerDetector(int threshold,
                  int fastNNumber)

Creates FAST Corner Detector

Parameters:

threshold - Integer for Threshold value.

fastNNumber - Integer n. Fast algorithm Tests whether there are n contiguous Pixels int the circle which are all darker, or all brighter than Pixel p. This Test does not generalize well for n < 12. There for n can only range from 9 to 12.

Method Detail

getPoints

public List<ImagePoint> getPoints()

Specified by:

getPoints in interface PointDetector

supports

public EnumSet<Descriptor.Supports> supports()

Description copied from interface: Descriptor

Determine the capabilities of this algorithm.

Specified by:

supports in interface Descriptor

Returns:

the set of supported capabilities.

run

public void run(ij.process.ImageProcessor ip)

Description copied from interface: Descriptor

Start processing of this algorithm on the given image processor. Keep in mind that if the imageProcessor is changed, Supports.NoChanges must not be set. This is also the case even if only ImageProcessor.snapshot() is used.

Specified by:

run in interface Descriptor

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener listener)

Description copied from interface: Descriptor

Adds a change listener to this descriptor. The descriptor might fire status change events which can be used to track the progress. Keep in mind that no implementation is forced to fire any events at all.

Specified by:

addPropertyChangeListener in interface Descriptor