ch.unizh.ini.jaer.chip.retina
Class Tmpdiff128RateController

java.lang.Object
  net.sf.jaer.eventprocessing.EventFilter
      net.sf.jaer.eventprocessing.EventFilter2D
          ch.unizh.ini.jaer.chip.retina.Tmpdiff128RateController

All Implemented Interfaces:

FrameAnnotater

public class Tmpdiff128RateController
extends EventFilter2D
implements FrameAnnotater

Controls the rate of events from the retina by controlling retina biases. The event threshold is increased if rate exceeds rateHigh until rate drops below rateHigh. The threshold is decreased if rate is lower than rateLow. Hysterisis limits crossing noise. A lowpass filter smooths the rate measurements.

Author:

tobi

Field Summary

protected java.util.prefs.Preferences	prefs
protected int	rateHigh

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

Tmpdiff128RateController(AEChip chip)
Creates a new instance of Tmpdiff128RateController

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.
java.lang.Object	getFilterState() should return the filter state in some useful form
float	getHysteresisFactor()
float	getRateFilter3dBFreqHz()
int	getRateHigh()
int	getRateLow()
void	initFilter() this should allocate and initialize memory: it may be called when the chip e.g.
boolean	isWriteLogEnabled()
void	resetFilter() should reset the filter to initial state
void	setHysteresisFactor(float h)
void	setRateFilter3dBFreqHz(float rateFilter3dBFreqHz)
void	setRateHigh(int upperThreshKEPS)
void	setRateLow(int lowerThreshKEPS)
void	setWriteLogEnabled(boolean writeLogEnabled)

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

checkOutputPacketEventType, checkOutputPacketEventType, getEnclosedFilter, resetOut, setEnclosedFilter, setFilterEnabled

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

getChip, getDescription, 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

Field Detail

prefs

protected java.util.prefs.Preferences prefs

rateHigh

protected int rateHigh

Constructor Detail

Tmpdiff128RateController

public Tmpdiff128RateController(AEChip chip)

Creates a new instance of Tmpdiff128RateController

Method Detail

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

getRateHigh

public int getRateHigh()

setRateHigh

public void setRateHigh(int upperThreshKEPS)

getRateLow

public int getRateLow()

setRateLow

public void setRateLow(int lowerThreshKEPS)

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

getRateFilter3dBFreqHz

public float getRateFilter3dBFreqHz()

setRateFilter3dBFreqHz

public void setRateFilter3dBFreqHz(float rateFilter3dBFreqHz)

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

getHysteresisFactor

public float getHysteresisFactor()

setHysteresisFactor

public void setHysteresisFactor(float h)

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

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(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

isWriteLogEnabled

public boolean isWriteLogEnabled()

setWriteLogEnabled

public void setWriteLogEnabled(boolean writeLogEnabled)