Module imagingbook_plugins_book

Package Ch06_Corner_Detection

Class Find_Corners

java.lang.Object

Ch06_Corner_Detection.Find_Corners

All Implemented Interfaces:

PlugInFilter, JavaDocHelp

public class Find_Corners
extends Object
implements PlugInFilter, JavaDocHelp

ImageJ plugin which demonstrates the use of gradient corner detectors (Harris, MOPS, Sho-Tomasi), optionally using sub-pixel positioning. See Ch. 6 of [1] for additional details. Detected corners are shown as a vector overlay on top of the original image.

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

Version:

2022/03/30

See Also:

• HarrisCornerDetector
• MopsCornerDetector
• ShiTomasiCornerDetector
• ShapeOverlayAdapter

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	Find_Corners.DetectorType

Field Summary

Fields

Modifier and Type	Field	Description
static Find_Corners.DetectorType	Algorithm	Detection algorithm to use.
static BasicAwtColor	CornerMarkColor	Color used for graphic corner marks.
static double	CornerMarkSize	Size of the graphic corner marks.
static double	CornerMarkStrokeWidth	Stroke width used for graphic corner marks.
static int	MaxCornerCount	Number of corners to show (0 = all).
static boolean	ShowCornerScoreImage	Set true to display the corner scores as an image.

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
Find_Corners()	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

Algorithm

public static Find_Corners.DetectorType Algorithm

Detection algorithm to use.

MaxCornerCount

public static int MaxCornerCount

Number of corners to show (0 = all).

CornerMarkSize

public static double CornerMarkSize

Size of the graphic corner marks.

CornerMarkStrokeWidth

public static double CornerMarkStrokeWidth

Stroke width used for graphic corner marks.

CornerMarkColor

public static BasicAwtColor CornerMarkColor

Color used for graphic corner marks.

ShowCornerScoreImage

public static boolean ShowCornerScoreImage

Set true to display the corner scores as an image.

Constructor Details

Find_Corners

public Find_Corners()

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