Module imagingbook.common

Package imagingbook.common.filter.edgepreserving

Class NagaoMatsuyamaFilterScalar

java.lang.Object

imagingbook.common.filter.generic.GenericFilter

imagingbook.common.filter.generic.GenericFilterScalar

imagingbook.common.filter.edgepreserving.NagaoMatsuyamaFilterScalar

All Implemented Interfaces:

NagaoMatsuyamaF, ProgressReporter

public class NagaoMatsuyamaFilterScalar
extends GenericFilterScalar
implements NagaoMatsuyamaF

Scalar version of the Nagao-Matsuyama filter. This class implements a 5x5 Nagao-Matsuyama filter, as described in [1]. See Sec. 17.1 of [2] for additional details.

[1] M. Nagao and T. Matsuyama. Edge preserving smoothing. Computer Graphics and Image Processing 9(4), 394–407 (1979).
[2] W. Burger, M.J. Burge, Digital Image Processing – An Algorithmic Introduction, 3rd ed, Springer (2022).

Version:

2021/01/02

Nested Class Summary

Nested classes/interfaces inherited from interface imagingbook.common.filter.edgepreserving.NagaoMatsuyamaF

NagaoMatsuyamaF.Constants, NagaoMatsuyamaF.Parameters

Constructor Summary

Constructors

Constructor	Description
NagaoMatsuyamaFilterScalar()
NagaoMatsuyamaFilterScalar(NagaoMatsuyamaF.Parameters params)

Method Summary

Modifier and Type	Method	Description
protected float	doPixel(PixelPack.PixelSlice plane, int u, int v)	This method defines the steps to be performed for a single image pixel and must be implemented by any concrete sub-class.

Methods inherited from class imagingbook.common.filter.generic.GenericFilterScalar

reportProgress, runPass

Methods inherited from class imagingbook.common.filter.generic.GenericFilter

abort, applyTo, applyTo, applyTo, closeFilter, getDepth, getHeight, getPass, getProgress, getWidth, initFilter, initPass, passesRequired, reportProgress

Methods inherited from class java.lang.Object

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

Constructor Details

NagaoMatsuyamaFilterScalar

public NagaoMatsuyamaFilterScalar()

NagaoMatsuyamaFilterScalar

public NagaoMatsuyamaFilterScalar(NagaoMatsuyamaF.Parameters params)

Method Details

doPixel

protected float doPixel(PixelPack.PixelSlice plane,
 int u,
 int v)

Description copied from class: GenericFilterScalar

This method defines the steps to be performed for a single image pixel and must be implemented by any concrete sub-class. The source data are passed as a PixelPack.PixelSlice container, which holds the scalar values of one image component. The method PixelPack.PixelSlice.getVal(int, int) should be used to read individual pixel values. These data should not be modified but the (float) result of the single-pixel calculation must be returned.

Specified by:

doPixel in class GenericFilterScalar

Parameters:

plane - the scalar-valued data for a single image component

u - the current x-position

v - the current y-position

Returns:

the result of the filter calculation for this pixel