de.biomedical_imaging.ij.steger

Class Line

java.lang.Object

de.biomedical_imaging.ij.steger.Line

public class Line
extends Object

This class holds one extracted line. The field num contains the number of points in the line. The coordinates of the line points are given in the arrays row and col. The array angle contains the direction of the normal to each line point, as measured from the row-axis. Some people like to call the col-axis the x-axis and the row-axis the y-axis, and measure the angle from the x-axis. To convert the angle into this convention, subtract PI/2 from the angle and normalize it to be in the interval [0,2*PI). The array response contains the response of the operator, i.e., the second directional derivative in the direction of angle, at each line point. The arrays width_l and width_r contain the width information for each line point if the algorithm was requested to extract it; otherwise they are NULL. If the line position and width correction was applied the contents of width_l and width_r will be identical. The arrays asymmetry and contrast contain the true asymmetry and contrast of each line point if the algorithm was instructed to apply the width and position correction. Otherwise, they are set to NULL. If the asymmetry, i.e., the weaker gradient, is on the right side of the line, the asymmetry is set to a positive value, while if it is on the left side it is set to a negative value.

Constructor Summary

Constructors

Constructor and Description
Line() Instantiates a new line.
Line(float[] x, float[] y) Instantiates a new line.

Method Summary

Modifier and Type	Method and Description
double	estimateLength() Estimate length.
float[]	getAngle() Gets the angle.
float[]	getAsymmetry() Gets the asymmetry.
LinesUtil.contour_class	getContourClass() Gets the contour class.
int	getFrame() Gets the frame.
int	getID() Gets the id.
float[]	getIntensity() Gets the intensity.
LinesUtil.contour_class	getLineClass() Gets the line class.
float[]	getLineWidthL() Gets the line width L.
float[]	getLineWidthR() Gets the line width R.
int	getNumber() Gets the number.
float[]	getResponse() Gets the response.
int	getStartOrdEndPosition(float x, float y) Gets the start ord end position.
float[]	getXCoordinates() Gets the x coordinates.
float[]	getYCoordinates() Gets the y coordinates.
void	setContourClass(LinesUtil.contour_class cont_class) Sets the contour class.
void	setFrame(int frame) Sets the frame.

Methods inherited from class java.lang.Object

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

Constructor Detail

Line

public Line()

Instantiates a new line.

Line

public Line(float[] x,
            float[] y)

Instantiates a new line.

Parameters:

x - the x

y - the y

Method Detail

getContourClass

public LinesUtil.contour_class getContourClass()

Gets the contour class.

Returns:

the contour class

setContourClass

public void setContourClass(LinesUtil.contour_class cont_class)

Sets the contour class.

Parameters:

cont_class - the new contour class

setFrame

public void setFrame(int frame)

Sets the frame.

Parameters:

frame - the new frame

getFrame

public int getFrame()

Gets the frame.

Returns:

the frame index where the line was detected

getXCoordinates

public float[] getXCoordinates()

Gets the x coordinates.

Returns:

x coordinates of the line points

getYCoordinates

public float[] getYCoordinates()

Gets the y coordinates.

Returns:

y coordinates of the line points

getResponse

public float[] getResponse()

Gets the response.

Returns:

response of line point (second derivative)

getIntensity

public float[] getIntensity()

Gets the intensity.

Returns:

intensity of the line points

getAngle

public float[] getAngle()

Gets the angle.

Returns:

angle of normal (measured from the y-axis)

getAsymmetry

public float[] getAsymmetry()

Gets the asymmetry.

Returns:

asymmetry of the line point

getLineWidthL

public float[] getLineWidthL()

Gets the line width L.

Returns:

width to the left of the line

getLineWidthR

public float[] getLineWidthR()

Gets the line width R.

Returns:

width to the right of the line

getNumber

public int getNumber()

Gets the number.

Returns:

Return the number of points

getID

public int getID()

Gets the id.

Returns:

unique ID of the line

getLineClass

public LinesUtil.contour_class getLineClass()

Gets the line class.

Returns:

the line class

getStartOrdEndPosition

public int getStartOrdEndPosition(float x,
                                  float y)

Gets the start ord end position.

Parameters:

x - the x

y - the y

Returns:

the start ord end position

estimateLength

public double estimateLength()

Estimate length.

Returns:

the estimated length of the line