JSci.instruments
Class PTTwoDBarycentreCross

java.lang.Object
  JSci.instruments.PTTwoDBarycentreCross

public class PTTwoDBarycentreCross
extends java.lang.Object

Field Summary

static double	ALPHA threshold for defininf the light and dark regions; 0<ALPHA<1 (ALPHA approx 0.3)
static int	ODD_EVEN the meaning of fields in interlaced images; 1 for odd/even, 0 for odd-only fields
static double	REGION_SPEED the speed of movement of the region; 0 = the region doesn't move; 1 = the region follows the bead
static int	WEIGHT_LIGHT_PART the weight of the light region vs.

Constructor Summary

PTTwoDBarycentreCross(java.awt.Rectangle r)

Method Summary

void	find(Image i) ask the cross to find the bead.
void	findInterlaced(Image i) ask the cross to find the bead.
int	getN()
double	getX()
double	getX2()
double	getY()
double	getY2()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ALPHA

public static double ALPHA

threshold for defininf the light and dark regions; 0<ALPHA<1 (ALPHA approx 0.3)

WEIGHT_LIGHT_PART

public static int WEIGHT_LIGHT_PART

the weight of the light region vs. the dark region (%)

REGION_SPEED

public static double REGION_SPEED

the speed of movement of the region; 0 = the region doesn't move; 1 = the region follows the bead

ODD_EVEN

public static int ODD_EVEN

the meaning of fields in interlaced images; 1 for odd/even, 0 for odd-only fields

Constructor Detail

PTTwoDBarycentreCross

public PTTwoDBarycentreCross(java.awt.Rectangle r)

Parameters:

r - the initial region where to look for the bead

Method Detail

find

public void find(Image i)

ask the cross to find the bead. For non-interlaced images.

findInterlaced

public void findInterlaced(Image i)

ask the cross to find the bead. For interlaced images; generates also x2 and y2 coords.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

the number of the cross; increases for each instance is created

getN

public int getN()

Returns:

the number of the bead

getX

public double getX()

Returns:

the x position of the bead

getY

public double getY()

Returns:

the y position of the bead

getX2

public double getX2()

Returns:

the x position of the bead, in the second field, only for interlaced images

getY2

public double getY2()

Returns:

the y position of the bead, in the second field, only for interlaced images