edu.berkeley.guir.ptk.abstraction
Class MotionAbstractor

java.lang.Object
  edu.berkeley.guir.ptk.PTK
      edu.berkeley.guir.ptk.abstraction.Abstractor
          edu.berkeley.guir.ptk.abstraction.MotionAbstractor

public class MotionAbstractor

extends Abstractor

Performs abstraction of PlanarImages from input.CamperInput to determine if there is motion and how much motion has occurred in pixels. In an IMAGE event, replaces the image object (DataObject) with three pieces of data: a boolean MOTION that is true if there is motion; the AMOUNT_OF_MOTION, which can be either MOTION_NONE, MOTION_LO, MOTION_MED, MOTION_HI; and the AMOUNT_OF_MOTION_PIXELS, which is the number of pixels that have changed since the last image (more precisely quantifies how much motion has occured). The first of these data is saved as a DataSwitch, the last two of these data are saved as DataNumber objects.

Field Summary

protected int	amount_of_motion
static int	B
boolean	debug_feedback If true, the motion abstractor will show feedback on what it is doing: differenced images taken by the camera will be displayed.
static int	G
int	motion_lo_pixels Set this to customize the number of pixels below which the motion dector will to set the AMOUNT_OF_MOTION to MOTION_LO.
int	motion_med_pixels Set this to customize the number of pixels below which the motion dector will to set the AMOUNT_OF_MOTION to MOTION_MED and above which the motion detector will set it to MOTION_HI.
int	motion_none_pixels Set this to customize the number of pixels below which the motion dector will to set the AMOUNT_OF_MOTION to MOTION_NONE.
protected static javax.media.jai.PlanarImage	prevImage
static int	R
protected static javax.media.jai.widget.ScrollingImagePanel	sip
protected static javax.swing.JFrame	systemDisplayFrame

Fields inherited from class edu.berkeley.guir.ptk.abstraction.Abstractor

data_ids_I_want, replace_data

Fields inherited from class edu.berkeley.guir.ptk.PTK

debug, MAX_DEBUG, MED_DEBUG, MIN_DEBUG, NO_DEBUG

Constructor Summary

MotionAbstractor()

Method Summary

protected int	addMotionPixels(javax.media.jai.PlanarImage image) Count all the non-black pixels in the image.
protected javax.media.jai.PlanarImage	convertToTiled(java.lang.Object dataSample) Converts a Java image to a TiledImage, which is more memory efficient and allows random access to image pixels.
void	displayFeedback(javax.media.jai.widget.ScrollingImagePanel i)
boolean	doAbstract(Event e, History h) Performs the abstraction of the event e as specified by the class that implements this interface.
protected boolean	isCloseToBlack(float[] pix)
boolean	isThereMotion(java.lang.Object dataSample)

Methods inherited from class edu.berkeley.guir.ptk.abstraction.Abstractor

addMetadataIWant, canIAbstract, getAllMetadata, getFirstMetadata

Methods inherited from class edu.berkeley.guir.ptk.PTK

getMAX, getMED, getMIN, getNO, printDebug, printDebug, printError

Methods inherited from class java.lang.Object

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

Field Detail

R

public static final int R

See Also:

Constant Field Values

G

public static final int G

See Also:

Constant Field Values

B

public static final int B

See Also:

Constant Field Values

systemDisplayFrame

protected static final javax.swing.JFrame systemDisplayFrame

sip

protected static javax.media.jai.widget.ScrollingImagePanel sip

prevImage

protected static javax.media.jai.PlanarImage prevImage

amount_of_motion

protected int amount_of_motion

debug_feedback

public boolean debug_feedback

If true, the motion abstractor will show feedback on what it is doing: differenced images taken by the camera will be displayed. This flag should only be true when you are debugging. Set this flag to false when running the application.

motion_none_pixels

public int motion_none_pixels

Set this to customize the number of pixels below which the motion dector will to set the AMOUNT_OF_MOTION to MOTION_NONE.

motion_lo_pixels

public int motion_lo_pixels

Set this to customize the number of pixels below which the motion dector will to set the AMOUNT_OF_MOTION to MOTION_LO.

motion_med_pixels

public int motion_med_pixels

Set this to customize the number of pixels below which the motion dector will to set the AMOUNT_OF_MOTION to MOTION_MED and above which the motion detector will set it to MOTION_HI.

Constructor Detail

MotionAbstractor

public MotionAbstractor()

Method Detail

doAbstract

public boolean doAbstract(Event e,
                          History h)

Description copied from class: Abstractor

Performs the abstraction of the event e as specified by the class that implements this interface. Returns true if the abstraction was successful and false otherwise.

Specified by:

doAbstract in class Abstractor

Parameters:

e -

h -

Returns:

boolean

isThereMotion

public boolean isThereMotion(java.lang.Object dataSample)

addMotionPixels

protected int addMotionPixels(javax.media.jai.PlanarImage image)

Count all the non-black pixels in the image. This is the amount the image has changed, which indicates motion.

isCloseToBlack

protected boolean isCloseToBlack(float[] pix)

convertToTiled

protected javax.media.jai.PlanarImage convertToTiled(java.lang.Object dataSample)

Converts a Java image to a TiledImage, which is more memory efficient and allows random access to image pixels.

displayFeedback

public void displayFeedback(javax.media.jai.widget.ScrollingImagePanel i)