com.pearsoneduc.ip.op
Class RegionLabelOp

java.lang.Object
  |
  +--com.pearsoneduc.ip.op.StandardGreyOp
        |
        +--com.pearsoneduc.ip.op.RegionLabelOp

public class RegionLabelOp

extends StandardGreyOp

Performs connected component labelling of an image. Each 4-connected or 8-connected region of pixels is given its own label.

Version:

1.0 [1999/08/26]

Author:

Nick Efford

Constructor Summary

RegionLabelOp(int c)
Creates a RegionLabelOp with the specified connectivity.

Method Summary

java.awt.image.BufferedImage

filter(java.awt.image.BufferedImage src, java.awt.image.BufferedImage dest) Performs labelling of connected components in an image.

Methods inherited from class com.pearsoneduc.ip.op.StandardGreyOp

checkImage, createCompatibleDestImage, getBounds2D, getPoint2D, getRenderingHints

Methods inherited from class java.lang.Object

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

Constructor Detail

RegionLabelOp

public RegionLabelOp(int c)

Creates a RegionLabelOp with the specified connectivity.

Parameters:

c - pixel connectivity (either 4 or 8)

Throws:

ImagingOpException - if connectivity is not 4 or 8.

Method Detail

filter

public java.awt.image.BufferedImage filter(java.awt.image.BufferedImage src,
                                           java.awt.image.BufferedImage dest)

Performs labelling of connected components in an image.

Parameters:

src - source image

dest - destination image, or null

Returns:

labelled image.

Throws:

ImagingOpException - if source image is not an 8-bit greyscale image.

Overrides:

filter in class StandardGreyOp