Module imagingbook.common

Package imagingbook.common.threshold.adaptive

Class BernsenThresholder

java.lang.Object

imagingbook.common.threshold.adaptive.BernsenThresholder

All Implemented Interfaces:

AdaptiveThresholder, Thresholder

public class BernsenThresholder
extends Object
implements AdaptiveThresholder

This is an implementation of the adaptive thresholder proposed by Bernsen in [1]. It uses a circular support region implemented with ImageJ's built-in rank-filter methods. See Sec. 9.2.1 of [2] for a detailed description.

[1] J. Bernsen. Dynamic thresholding of grey-level images. In "Proceedings of the International Conference on Pattern Recognition (ICPR)", pp. 1251–1255, Paris (October 1986). IEEE Computer Society.
[2] W. Burger, M.J. Burge, Digital Image Processing – An Algorithmic Introduction, 3rd ed, Springer (2022).

Version:

2022/04/02

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BernsenThresholder.Parameters	Parameters for class BernsenThresholder.

Nested classes/interfaces inherited from interface imagingbook.common.threshold.Thresholder

Thresholder.BackgroundMode

Constructor Summary

Constructors

Constructor	Description
BernsenThresholder()	Constructor using default parameters.
BernsenThresholder(BernsenThresholder.Parameters params)	Constructor using specified parameters.

Method Summary

Modifier and Type	Method	Description
FloatProcessor	getThreshold(ByteProcessor I)	Calculates a adaptive "threshold surface" for the specified ByteProcessor and returns it as another ByteProcessor.

Methods inherited from class java.lang.Object

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

Methods inherited from interface imagingbook.common.threshold.adaptive.AdaptiveThresholder

threshold, threshold, threshold

Constructor Details

BernsenThresholder

public BernsenThresholder()

Constructor using default parameters.

BernsenThresholder

public BernsenThresholder(BernsenThresholder.Parameters params)

Constructor using specified parameters.

Parameters:

params - an instance of BernsenThresholder.Parameters

Method Details

getThreshold

public FloatProcessor getThreshold(ByteProcessor I)

Description copied from interface: AdaptiveThresholder

Calculates a adaptive "threshold surface" for the specified ByteProcessor and returns it as another ByteProcessor.

Specified by:

getThreshold in interface AdaptiveThresholder

Parameters:

I - the input image

Returns:

the threshold surface