Module imagingbook_plugins_book

Package Ch08_Binary_Regions

Class Region_Contours_Demo

java.lang.Object

Ch08_Binary_Regions.Region_Contours_Demo

All Implemented Interfaces:

PlugInFilter, JavaDocHelp

public class Region_Contours_Demo
extends Object
implements PlugInFilter, JavaDocHelp

This ImageJ plugin demonstrates the use of the class RegionContourSegmentation to perform both region labeling and contour tracing simultaneously. See Sec. 8.2.2 of [1] for additional details. Requires a binary image. Zero-value pixels are considered background, all other pixels are foreground. Display lookup tables (LUTs) are not considered. The resulting contours are displayed as a non-destructive vector overlay on the original image. Outer contours of single-pixel regions are marked by an "X". If no image is currently open, the plugin optionally loads a suitable sample image.

This plugin also demonstrates the use of the ShapeOverlayAdapter (provided by the imagingbook library) which handles 0.5 pixel offsets for vector graphics transparently.

[1] W. Burger, M.J. Burge, Digital Image Processing – An Algorithmic Introduction, 3rd ed, Springer (2022).

Version:

2020/12/20, 2022/09/27 revised overlay generation

See Also:

• RegionContourSegmentation

Field Summary

Fields

Modifier and Type	Field	Description
static double	ContourStrokeWidth	Stroke width used for drawing contours.
static BasicAwtColor	InnerContourColor	Color used for drawing inner contours.
static boolean	ListRegions	Set true to list detected regions to the text console.
static NeighborhoodType2D	Neighborhood	Neighborhood type used for region segmentation (4- or 8-neighborhood).
static BasicAwtColor	OuterContourColor	Color used for drawing outer contours.

Fields inherited from interface ij.plugin.filter.PlugInFilter

CONVERT_TO_FLOAT, DOES_16, DOES_32, DOES_8C, DOES_8G, DOES_ALL, DOES_RGB, DOES_STACKS, DONE, FINAL_PROCESSING, KEEP_THRESHOLD, NO_CHANGES, NO_IMAGE_REQUIRED, NO_UNDO, NO_UNDO_RESET, PARALLELIZE_IMAGES, PARALLELIZE_STACKS, ROI_REQUIRED, SNAPSHOT, STACK_REQUIRED, SUPPORTS_MASKING

Constructor Summary

Constructors

Constructor	Description
Region_Contours_Demo()	Constructor, asks to open a predefined sample image if no other image is currently open.

Method Summary

Modifier and Type	Method	Description
void	run(ImageProcessor ip)
int	setup(String arg, ImagePlus im)

Methods inherited from class java.lang.Object

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

Methods inherited from interface imagingbook.core.jdoc.JavaDocHelp

getJavaDocUrl

Field Details

Neighborhood

public static NeighborhoodType2D Neighborhood

Neighborhood type used for region segmentation (4- or 8-neighborhood).

ContourStrokeWidth

public static double ContourStrokeWidth

Stroke width used for drawing contours.

OuterContourColor

public static BasicAwtColor OuterContourColor

Color used for drawing outer contours.

InnerContourColor

public static BasicAwtColor InnerContourColor

Color used for drawing inner contours.

ListRegions

public static boolean ListRegions

Set true to list detected regions to the text console.

Constructor Details

Region_Contours_Demo

public Region_Contours_Demo()

Constructor, asks to open a predefined sample image if no other image is currently open.

Method Details

setup

public int setup(String arg,
 ImagePlus im)

Specified by:

setup in interface PlugInFilter

run

public void run(ImageProcessor ip)

Specified by:

run in interface PlugInFilter