imagingbook.pub.threshold.adaptive

Class NiblackThresholder

java.lang.Object

imagingbook.pub.threshold.Thresholder

imagingbook.pub.threshold.adaptive.AdaptiveThresholder

imagingbook.pub.threshold.adaptive.NiblackThresholder

Direct Known Subclasses:

NiblackThresholder.Box, NiblackThresholder.Disk, NiblackThresholder.Gauss

public abstract class NiblackThresholder
extends AdaptiveThresholder

This version of Niblack's thresholder uses a circular support region, implemented with IJ's rank-filter methods.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NiblackThresholder.Box
static class	NiblackThresholder.Disk
static class	NiblackThresholder.Gauss
static class	NiblackThresholder.Parameters

Field Summary

Fields

Modifier and Type	Field and Description
protected ij.process.FloatProcessor	Imean
protected ij.process.FloatProcessor	Isigma

Method Summary

Modifier and Type	Method and Description
ij.process.ByteProcessor	getThreshold(ij.process.ByteProcessor I)
protected abstract void	makeMeanAndVariance(ij.process.ByteProcessor I, NiblackThresholder.Parameters params)

Methods inherited from class imagingbook.pub.threshold.adaptive.AdaptiveThresholder

getLine, getLine, getPaddedPixel, threshold, threshold

Methods inherited from class imagingbook.pub.threshold.Thresholder

count, count, max, mean, mean, median, normalize, normalize, sigma2, sigma2, sum

Methods inherited from class java.lang.Object

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

Field Detail

Imean

protected ij.process.FloatProcessor Imean

Isigma

protected ij.process.FloatProcessor Isigma

Method Detail

makeMeanAndVariance

protected abstract void makeMeanAndVariance(ij.process.ByteProcessor I,
                                            NiblackThresholder.Parameters params)

getThreshold

public ij.process.ByteProcessor getThreshold(ij.process.ByteProcessor I)

Specified by:

getThreshold in class AdaptiveThresholder