Package edu.gsu.cs.dmlab.imageproc.edgedetection.util

Class Threshold

java.lang.Object

edu.gsu.cs.dmlab.imageproc.edgedetection.util.Threshold

public class Threshold
extends Object

Author:

Azim Ahmadzadeh of Data Mining Lab, Georgia State University

Constructor Summary

Constructors

Constructor	Description
Threshold()

Method Summary

Modifier and Type	Method	Description
static double[][]	applyThreshold(boolean[][] pixels)
static double[][]	applyThreshold(int[][] pixels, int threshold)	Returns BufferedImage where color at (i, j) is black if pixel intensity > threshold; white otherwise.
static double[][]	applyThresholdOriginal(boolean[][] edges, double[][] originalImage)
static double[][]	applyThresholdReversed(boolean[][] pixels)
static double[][]	applyThresholdWeakStrongCanny(boolean[][] weakEdges, boolean[][] strongEdges)
static double	calcThresholdEdges(double[][] magnitude)	Calculates threshold as the mean of the |G| matrix for edge detection algorithms.

Methods inherited from class java.lang.Object

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

Constructor Detail

Threshold

public Threshold()

Method Detail

calcThresholdEdges

public static double calcThresholdEdges(double[][] magnitude)

Calculates threshold as the mean of the |G| matrix for edge detection algorithms.

Parameters:

magnitude -

Returns:

applyThreshold

public static double[][] applyThreshold(int[][] pixels,
                                        int threshold)

Returns BufferedImage where color at (i, j) is black if pixel intensity > threshold; white otherwise.

Parameters:

pixels -

threshold -

Returns:

applyThreshold

public static double[][] applyThreshold(boolean[][] pixels)

Parameters:

pixels -

Returns:

applyThresholdReversed

public static double[][] applyThresholdReversed(boolean[][] pixels)

Parameters:

pixels -

Returns:

applyThresholdWeakStrongCanny

public static double[][] applyThresholdWeakStrongCanny(boolean[][] weakEdges,
                                                       boolean[][] strongEdges)

Parameters:

weakEdges -

strongEdges -

Returns:

applyThresholdOriginal

public static double[][] applyThresholdOriginal(boolean[][] edges,
                                                double[][] originalImage)