org.shapelogic.imageprocessing
Class DirectionBasedVectorizer

java.lang.Object
  org.shapelogic.imageutil.BaseImageOperation
      org.shapelogic.imageprocessing.BaseVectorizer
          org.shapelogic.imageprocessing.ShortLineBasedVectorizer
              org.shapelogic.imageprocessing.DirectionBasedVectorizer

All Implemented Interfaces:

java.lang.Runnable, java.util.Iterator<Polygon>, IPixelTypeFinder, LazyPlugInFilter<Polygon>, PixelJumperByte, ImageOperation

Direct Known Subclasses:

DirectionBasedVectorizer_

public class DirectionBasedVectorizer
extends ShortLineBasedVectorizer

DirectionBasedVectorizer is a Vectorizer based on direction. This is special by using directions as the primary way of finding the path.

Author:

Sami Badawi

Field Summary

protected byte[]	_chainCodeForMultiLine All the direction from _firstPointInLine, so the direction on index 0 is point one pixel away from _firstPointInLine.
protected int[]	_directionsCount
protected int	_lastPointInCurrentMultiLine
protected double[]	_shortLineAngles
protected double[]	_shortLineAngleSpeeds
protected int	_shortLineCount
protected double[]	_shortLineLength
protected int[]	_shortLinePointIndex
protected static int	CHAIN_CODE_FOR_MULTI_LINE_MAX_LENGTH
protected static int	MAX_SHORT_LINE_COUNT
protected static int	NUMBER_OF_SAME_DIRECTION_TO_START_STRAIGHT

Fields inherited from class org.shapelogic.imageprocessing.ShortLineBasedVectorizer

_angleLimit, _currentAngle, _currentCircleInterval, _currentLineType, _currentVectorDirection, _firstPointInLine, _firstUsedDirection, _maxPointsInShortLine, _pixelTypeCalculatorNextPoint, _pointsInCurrentShortLine, _secondUsedDirection, _startOfShortLinePoint, ANGLE_DIFFERENCE_LIMIT, MAX_NUMBER_OF_POINTS_IN_SHORT_LINE

Fields inherited from class org.shapelogic.imageprocessing.BaseVectorizer

_cleanedupPolygon, _currentDirection, _currentPixelIndex, _currentPoint, _cyclePoints, _displayInternalInfo, _endPointsClusters, _errorMessage, _firstPointInLineIndex, _firstPointInMultiLine, _matchingOH, _maxX, _maxY, _minX, _minY, _nextCount, _numberOfPointsInAllLines, _pixels, _pixelTypeCalculator, _pixelTypeFinder, _rulesArrayForLetterMatching, _stream, _streamName, _unfinishedPoints, _yForUnporcessedPixel, MAX_DISTANCE_BETWEEN_CLUSTER_POINTS, STRAIGHT_LINE_COLOR

Fields inherited from class org.shapelogic.imageutil.BaseImageOperation

_arg, _guiWrapper, _image, _keyValueParser, _setupReturnValue

Constructor Summary

DirectionBasedVectorizer()

Method Summary

static CPointInt	angleFromDirectionArray(byte[] directionArray, int startDirection, int endDirection) Get angle from direction byte array.
protected void	findMultiLinePostProcess() To be overridden.
protected boolean	isStraight() Test if the last part of the line is straight.
protected boolean	lastPixelOk(byte newDirection) Change to be an up front check.
protected void	makeNewPointPostProcess()
protected void	moveCurrentPointForwards(byte newDirection)
protected boolean	multiLineHasGlobalFitness() Test that the current direction is close to the last direction.
void	newShortLine() Hook for creating new short line.
protected int	numberOfDirections(int[] directionsCount) Test how many of the 8 directions are represented.
protected void	splitLine(int splitIndex) I think that this is messing with the short lines.

Methods inherited from class org.shapelogic.imageprocessing.ShortLineBasedVectorizer

findMultiLine, findMultiLinePreProcess, findNextLinePoint, getAngleLimit, getMaxSinceLast, handleProblematicPoints, internalFactory, makeNewPoint, resetShortLine, setAngleLimit, setMaxSinceLast, splitLine

Methods inherited from class org.shapelogic.imageprocessing.BaseVectorizer

addToUnfinishedPoints, cleanPolygon, countRegionCrossingsAroundPoint, drawLine, drawLines, findAllLines, findFirstLinePoint, findPointType, getCleanedupPolygon, getCyclePoints, getErrorMessage, getImageProcessor, getMatchingOH, getMaxX, getMaxY, getMinX, getMinY, getPixels, getPoints, getPolygon, getStream, getStreamName, hasNext, init, isPixelUsed, matchLines, next, oppesiteDirection, pixelIndexToPoint, pointToPixelIndex, pointToPixelIndex, polygonFactory, remove, run, setStreamName

Methods inherited from class org.shapelogic.imageutil.BaseImageOperation

getGuiWrapper, getImage, getKeyValueParser, getSetupReturnValue, isImageValid, setArg, setGuiWrapper, setKeyValueParser, setSetupReturnValue, setup, showAbout, showMessage

Methods inherited from class java.lang.Object

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

Field Detail

CHAIN_CODE_FOR_MULTI_LINE_MAX_LENGTH

protected static final int CHAIN_CODE_FOR_MULTI_LINE_MAX_LENGTH

See Also:

Constant Field Values

MAX_SHORT_LINE_COUNT

protected static final int MAX_SHORT_LINE_COUNT

See Also:

Constant Field Values

NUMBER_OF_SAME_DIRECTION_TO_START_STRAIGHT

protected static final int NUMBER_OF_SAME_DIRECTION_TO_START_STRAIGHT

See Also:

Constant Field Values

_chainCodeForMultiLine

protected byte[] _chainCodeForMultiLine

All the direction from _firstPointInLine, so the direction on index 0 is point one pixel away from _firstPointInLine.

_directionsCount

protected int[] _directionsCount

_shortLineCount

protected int _shortLineCount

_shortLineAngles

protected double[] _shortLineAngles

_shortLineAngleSpeeds

protected double[] _shortLineAngleSpeeds

_shortLineLength

protected double[] _shortLineLength

_shortLinePointIndex

protected int[] _shortLinePointIndex

_lastPointInCurrentMultiLine

protected int _lastPointInCurrentMultiLine

Constructor Detail

DirectionBasedVectorizer

public DirectionBasedVectorizer()

Method Detail

multiLineHasGlobalFitness

protected boolean multiLineHasGlobalFitness()

Test that the current direction is close to the last direction.

Returns:

true if a new point should be created

lastPixelOk

protected boolean lastPixelOk(byte newDirection)

Description copied from class: ShortLineBasedVectorizer

Change to be an up front check.

Overrides:

lastPixelOk in class ShortLineBasedVectorizer

isStraight

protected boolean isStraight()

Test if the last part of the line is straight.

numberOfDirections

protected int numberOfDirections(int[] directionsCount)

Test how many of the 8 directions are represented.

moveCurrentPointForwards

protected void moveCurrentPointForwards(byte newDirection)

Overrides:

moveCurrentPointForwards in class ShortLineBasedVectorizer

newShortLine

public void newShortLine()

Description copied from class: ShortLineBasedVectorizer

Hook for creating new short line.

Overrides:

newShortLine in class ShortLineBasedVectorizer

makeNewPointPostProcess

protected void makeNewPointPostProcess()

Overrides:

makeNewPointPostProcess in class ShortLineBasedVectorizer

angleFromDirectionArray

public static CPointInt angleFromDirectionArray(byte[] directionArray,
                                                int startDirection,
                                                int endDirection)

Get angle from direction byte array. directionArray, byte array containing the 8 direction startDirection, number of first direction to accumulate endDirection, number of first direction to accumulate

Returns:

vector as a point of accumulated line

splitLine

protected void splitLine(int splitIndex)

I think that this is messing with the short lines.

Parameters:

splitIndex -

findMultiLinePostProcess

protected void findMultiLinePostProcess()

Description copied from class: BaseVectorizer

To be overridden. If I want to do more matching at the end.

Overrides:

findMultiLinePostProcess in class ShortLineBasedVectorizer