net.sourceforge.javaocr.plugin.cluster.extractor
Class FreeSpacesExtractor

java.lang.Object
  net.sourceforge.javaocr.filter.AbstractSinglePixelFilter
      net.sourceforge.javaocr.plugin.cluster.extractor.FreeSpacesExtractor

All Implemented Interfaces:

FeatureExtractor, ImageFilter

public class FreeSpacesExtractor
extends AbstractSinglePixelFilter
implements FeatureExtractor

extracts amount of contiguous free spaces in a glyph. As it is basically integer value, and also pretty stable - some classificators utilizing statistical methods may barf due to zero variance TODO: I'm not happy with this location - maybe it is best somewhere else

Author:

Konstantin Pribluda

Field Summary

(package private) int	currentSpaceNumber
(package private) boolean	free
(package private) int	index
(package private) int	reductionFactor
(package private) int	spaceCount
(package private) int[]	workingScan

Constructor Summary

FreeSpacesExtractor()

Method Summary

double[]	extract(Image image)
int	getSize()
void	process(Image image) prepare image processing
protected void	processPixel(Image image) process single pixel.

Methods inherited from class java.lang.Object

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

Field Detail

workingScan

int[] workingScan

spaceCount

int spaceCount

index

int index

free

boolean free

currentSpaceNumber

int currentSpaceNumber

reductionFactor

int reductionFactor

Constructor Detail

FreeSpacesExtractor

public FreeSpacesExtractor()

Method Detail

getSize

public int getSize()

Specified by:

getSize in interface FeatureExtractor

extract

public double[] extract(Image image)

Specified by:

extract in interface FeatureExtractor

process

public void process(Image image)

prepare image processing

Specified by:

process in interface ImageFilter

Overrides:

process in class AbstractSinglePixelFilter

Parameters:

image -

processPixel

protected void processPixel(Image image)

process single pixel. a lot of voodoo magic emerged from test driven development - it is correct but not designed

Specified by:

processPixel in class AbstractSinglePixelFilter

Parameters:

image -