net.sf.jaer.eventprocessing.label
Class MotionCompensator

java.lang.Object
  net.sf.jaer.eventprocessing.EventFilter
      net.sf.jaer.eventprocessing.EventFilter2D
          net.sf.jaer.eventprocessing.label.MotionCompensator

All Implemented Interfaces:

FrameAnnotater

public class MotionCompensator
extends EventFilter2D
implements FrameAnnotater

Tries to compensate global image motion by using global motion metrics to redirect output events, shifting them according to motion of input.

Author:

tobi

Field Summary

Fields inherited from class net.sf.jaer.eventprocessing.EventFilter2D

enclosedFilter, out

Fields inherited from class net.sf.jaer.eventprocessing.EventFilter

annotationEnabled, chip, enclosedFilterChain, filterEnabled, log, perf, propertyTooltipMap, support

Constructor Summary

MotionCompensator(AEChip chip)
Creates a new instance of MotionCompensator

Method Summary

void	annotate(float[][][] frame) annotate the RGB frame somehow by color pixels in the rendered pixel frame data.
void	annotate(javax.media.opengl.GLAutoDrawable drawable) Each annotator enters annotate with graphics context current, in coordinates with pixel 0,0 in LL corner (note opposite from Java2D) and pixel spacing 1 unit after the scaling transform (which is already active).
void	annotate(java.awt.Graphics2D g) each annotator is called by the relevant class (e.g.
EventPacket	filterPacket(EventPacket in) Subclasses implement this method to define custom processing.
static java.lang.String	getDescription()
java.lang.Object	getFilterState() should return the filter state in some useful form
float	getFreqCornerHz()
float	getGain()
void	initFilter() this should allocate and initialize memory: it may be called when the chip e.g.
boolean	isFeedforwardEnabled()
boolean	isFlipContrast()
boolean	isRotationEnabled()
void	resetFilter() should reset the filter to initial state
void	setFeedforwardEnabled(boolean feedforwardEnabled) true to apply current shift values to input packet events.
void	setFilterEnabled(boolean yes) Resets the filter
void	setFlipContrast(boolean flipContrast)
void	setFreqCornerHz(float freq)
void	setGain(float gain)
void	setRotationEnabled(boolean rotationEnabled)

Methods inherited from class net.sf.jaer.eventprocessing.EventFilter2D

checkOutputPacketEventType, checkOutputPacketEventType, getEnclosedFilter, resetOut, setEnclosedFilter

Methods inherited from class net.sf.jaer.eventprocessing.EventFilter

getChip, getEnclosedFilterChain, getEnclosingFilter, getPrefs, getPropertyChangeSupport, getPropertyTooltip, isAnnotationEnabled, isEnclosed, isFilterEnabled, prefsEnabledKey, setAnnotationEnabled, setChip, setEnclosed, setEnclosedFilter, setEnclosedFilterChain, setEnclosingFilter, setPreferredEnabledState, setPrefs, setPropertyTooltip

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.jaer.graphics.FrameAnnotater

isAnnotationEnabled, setAnnotationEnabled

Constructor Detail

MotionCompensator

public MotionCompensator(AEChip chip)

Creates a new instance of MotionCompensator

Method Detail

getDescription

public static java.lang.String getDescription()

annotate

public void annotate(javax.media.opengl.GLAutoDrawable drawable)

Description copied from interface: FrameAnnotater

Each annotator enters annotate with graphics context current, in coordinates with pixel 0,0 in LL corner (note opposite from Java2D) and pixel spacing 1 unit after the scaling transform (which is already active). The FrameAnnotater then can use JOGL calls to render to the screen by getting the GL context, e.g. the following code, used in the context of an AEChip object, draws a golden lines from LL to UR of the pixel array.

        GL gl = drawable.getGL();
        gl.glBegin(GL.GL_LINES);
        gl.glColor3f(.5f, .5f, 0);
        gl.glVertex2f(0, 0);
        gl.glVertex2f(getSizeX() - 1, getSizeY() - 1);
        gl.glEnd();
 

Specified by:

annotate in interface FrameAnnotater

Parameters:

drawable - the OpenGL drawable components, e.g., GLCanvas

annotate

public void annotate(java.awt.Graphics2D g)

Description copied from interface: FrameAnnotater

each annotator is called by the relevant class (e.g. EyeTracker) and enters annotate with graphics context current, in coordinates with pixel 0,0 in UL corner and pixel spacing 1 unit before scaling transform (which is already active).

Specified by:

annotate in interface FrameAnnotater

Parameters:

g - the Graphics2D context

annotate

public void annotate(float[][][] frame)

Description copied from interface: FrameAnnotater

annotate the RGB frame somehow by color pixels in the rendered pixel frame data.

Specified by:

annotate in interface FrameAnnotater

Parameters:

frame - the RGB pixel information. First dimension is Y, second is X, third is RGB

getGain

public float getGain()

setGain

public void setGain(float gain)

setFreqCornerHz

public void setFreqCornerHz(float freq)

getFreqCornerHz

public float getFreqCornerHz()

getFilterState

public java.lang.Object getFilterState()

Description copied from class: EventFilter

should return the filter state in some useful form

Specified by:

getFilterState in class EventFilter

resetFilter

public void resetFilter()

Description copied from class: EventFilter

should reset the filter to initial state

Specified by:

resetFilter in class EventFilter

initFilter

public void initFilter()

Description copied from class: EventFilter

this should allocate and initialize memory: it may be called when the chip e.g. size parameters are changed after creation of the filter

Specified by:

initFilter in class EventFilter

isFlipContrast

public boolean isFlipContrast()

setFlipContrast

public void setFlipContrast(boolean flipContrast)

filterPacket

public EventPacket filterPacket(EventPacket in)

Description copied from class: EventFilter2D

Subclasses implement this method to define custom processing.

Specified by:

filterPacket in class EventFilter2D

Parameters:

in - the input packet

Returns:

the output packet

setFilterEnabled

public void setFilterEnabled(boolean yes)

Description copied from class: EventFilter2D

Resets the filter

Overrides:

setFilterEnabled in class EventFilter2D

Parameters:

yes - true to reset

See Also:

EventFilter.setPreferredEnabledState()

isFeedforwardEnabled

public boolean isFeedforwardEnabled()

setFeedforwardEnabled

public void setFeedforwardEnabled(boolean feedforwardEnabled)

true to apply current shift values to input packet events. This does a kind of feedback compensation

isRotationEnabled

public boolean isRotationEnabled()

setRotationEnabled

public void setRotationEnabled(boolean rotationEnabled)