edu.jhu.cs.cisst.algorithms.geometry.surface
Class IsoContourGenerator

java.lang.Object
  edu.jhu.ece.iacl.jist.pipeline.AbstractCalculation
      edu.jhu.cs.cisst.algorithms.geometry.surface.IsoContourGenerator

public class IsoContourGenerator
extends AbstractCalculation

The Iso-Contour generator generates 2D curves representing closed contours. The algorithm has been modified from it's original implementation so that contours are connected and do not self-intersect.

Author:

Blake Lucas

Nested Class Summary

protected class	IsoContourGenerator.Edge The Class Edge stores vertex ids.
protected class	IsoContourGenerator.EdgeSplit The Class EdgeSplit is a container to describe a level set crossing point.
static class	IsoContourGenerator.Winding The winding order for triangle vertices.

Field Summary

protected int	cols The cols.
protected int	component The component.
protected float[][][][]	fieldMat The field mat.
protected float[][]	imgMat The img mat.
protected float	isoLevel The iso level.
protected float	resX The res y.
protected float	resY The res y.
protected int	rows The cols.
protected int	slice The slice.
protected boolean	useResolutions The use resolutions.
protected int	vertCount The vert count.
protected float[][][]	volMat The vol mat.
protected IsoContourGenerator.Winding	winding The winding order.

Fields inherited from class edu.jhu.ece.iacl.jist.pipeline.AbstractCalculation

monitor

Constructor Summary

IsoContourGenerator()
Instantiates a new iso contour generator.

IsoContourGenerator(AbstractCalculation parent)
Instantiates a new iso contour generator.

Method Summary

protected void	addEdge(java.util.Hashtable<java.lang.Long,IsoContourGenerator.EdgeSplit> splits, java.util.LinkedList<IsoContourGenerator.Edge> edges, int p1x, int p1y, int p2x, int p2y, int p3x, int p3y, int p4x, int p4y) Adds the edge.
protected IsoContourGenerator.EdgeSplit	createSplit(java.util.Hashtable<java.lang.Long,IsoContourGenerator.EdgeSplit> splits, int p1x, int p1y, int p2x, int p2y) Creates the split.
protected float	fGetOffset(Point2i v1, Point2i v2) Interpolate position along edge.
protected float	getValue(int i, int j) Gets the value.
static java.lang.String	getVersion() Gets the version.
protected void	processSquare(int i, int j, java.util.Hashtable<java.lang.Long,IsoContourGenerator.EdgeSplit> splits, java.util.LinkedList<IsoContourGenerator.Edge> edges) Process square.
void	setUseResolutions(boolean useResolutions) Sets the use resolutions.
void	setWinding(IsoContourGenerator.Winding winding) Sets the winding.
CurveCollection	solve(ImageDataFloat vol, float isoLevel) Solve for iso-contour.
CurveCollection	solve(ImageDataFloat vol, float isoLevel, int slice, int component) Solve for iso-contour.

Methods inherited from class edu.jhu.ece.iacl.jist.pipeline.AbstractCalculation

add, addTotalUnits, decrementCompletedUnits, decrementCompletedUnits, getCompletedUnits, getCurrentLabel, getCurrentProgress, getLabel, getPerformance, getProgress, getTotalUnits, incrementCompletedUnits, incrementCompletedUnits, isCompleted, markCompleted, reset, setCompletedUnits, setCompletedUnits, setLabel, setMonitor, setTotalUnits

Methods inherited from class java.lang.Object

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

Field Detail

volMat

protected float[][][] volMat

The vol mat.

fieldMat

protected float[][][][] fieldMat

The field mat.

imgMat

protected float[][] imgMat

The img mat.

rows

protected int rows

The cols.

cols

protected int cols

The cols.

vertCount

protected int vertCount

The vert count.

isoLevel

protected float isoLevel

The iso level.

slice

protected int slice

The slice.

component

protected int component

The component.

resX

protected float resX

The res y.

resY

protected float resY

The res y.

useResolutions

protected boolean useResolutions

The use resolutions.

winding

protected IsoContourGenerator.Winding winding

The winding order.

Constructor Detail

IsoContourGenerator

public IsoContourGenerator()

Instantiates a new iso contour generator.

IsoContourGenerator

public IsoContourGenerator(AbstractCalculation parent)

Instantiates a new iso contour generator.

Parameters:

parent - the parent

Method Detail

getVersion

public static java.lang.String getVersion()

Gets the version.

Returns:

the version

addEdge

protected void addEdge(java.util.Hashtable<java.lang.Long,IsoContourGenerator.EdgeSplit> splits,
                       java.util.LinkedList<IsoContourGenerator.Edge> edges,
                       int p1x,
                       int p1y,
                       int p2x,
                       int p2y,
                       int p3x,
                       int p3y,
                       int p4x,
                       int p4y)

Adds the edge.

Parameters:

splits - the splits

edges - the edges

p1x - the p1x

p1y - the p1y

p2x - the p2x

p2y - the p2y

p3x - the p3x

p3y - the p3y

p4x - the p4x

p4y - the p4y

createSplit

protected IsoContourGenerator.EdgeSplit createSplit(java.util.Hashtable<java.lang.Long,IsoContourGenerator.EdgeSplit> splits,
                                                    int p1x,
                                                    int p1y,
                                                    int p2x,
                                                    int p2y)

Creates the split.

Parameters:

splits - the splits

p1x - the p1x

p1y - the p1y

p2x - the p2x

p2y - the p2y

Returns:

the edge split

fGetOffset

protected float fGetOffset(Point2i v1,
                           Point2i v2)

Interpolate position along edge.

Parameters:

v1 - the lower grid point

v2 - the upper grid point

Returns:

the position

getValue

protected float getValue(int i,
                         int j)

Gets the value.

Parameters:

i - the i

j - the j

Returns:

the value

processSquare

protected void processSquare(int i,
                             int j,
                             java.util.Hashtable<java.lang.Long,IsoContourGenerator.EdgeSplit> splits,
                             java.util.LinkedList<IsoContourGenerator.Edge> edges)

Process square.

Parameters:

i - the i

j - the j

splits - the splits

edges - the edges

setUseResolutions

public void setUseResolutions(boolean useResolutions)

Sets the use resolutions.

Parameters:

useResolutions - the new use resolutions

setWinding

public void setWinding(IsoContourGenerator.Winding winding)

Sets the winding.

Parameters:

winding - the new winding

solve

public CurveCollection solve(ImageDataFloat vol,
                             float isoLevel)

Solve for iso-contour.

Parameters:

vol - the level set

isoLevel - the target iso-level

Returns:

the iso-surface

solve

public CurveCollection solve(ImageDataFloat vol,
                             float isoLevel,
                             int slice,
                             int component)

Solve for iso-contour.

Parameters:

vol - the level set

isoLevel - the target iso-level

slice - the slice

Returns:

the iso-surface