Module imagingbook_plugins_book

Package More_

Class Fourier_Descriptor_Trigonometic

java.lang.Object

More_.Fourier_Descriptor_Trigonometic

All Implemented Interfaces:

PlugInFilter, JavaDocHelp

public class Fourier_Descriptor_Trigonometic
extends Object
implements PlugInFilter, JavaDocHelp

This ImageJ plugin demonstrates the "trigonometric" construction of elliptic Fourier descriptors. See Sec. 26.3.7 of [1] for details. The input is a user-defined polygon selection (ROI). The number of Fourier coefficient pairs can be specified in the user dialog. The plugin then displays the original polygon and the approximate contour reconstruction from the Fourier descriptor using all specified coefficient pairs. Increasing the number of coefficient pairs improves the reconstruction.

[1] W. Burger, M.J. Burge, Digital Image Processing – An Algorithmic Introduction Using Java, 2nd ed, Springer (2016).

Version:

2022/10/28

Field Summary

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
Fourier_Descriptor_Trigonometic()	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

Constructor Details

Fourier_Descriptor_Trigonometic

public Fourier_Descriptor_Trigonometic()

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