SPATMOD::IMAGE::FILTER_FOCAL_AMPM Class Reference

The Adaptive Mean P-Median filter (AMPM) is a variant of the P-Median filter that is designed to provide better smoothing in uniform regions while still preserving edges and line detail. More...

#include <spatmod/imagefilterfocal.h>

Inheritance diagram for SPATMOD::IMAGE::FILTER_FOCAL_AMPM:

[legend]

List of all members.

Public Member Functions
	FILTER_FOCAL_AMPM (STAGE *pSourceImage, bool TakeOwnershipSource, STAGE *pMaskImage, bool TakeOwnershipMask, STATSVALIDITY StatsValidity, double WeightParam, double SigmaParam, UINT32 NumFocalRows, UINT32 NumFocalColumns)
	FILTER_FOCAL_AMPM (STAGE *pSourceImage, bool TakeOwnershipSource, STATSVALIDITY StatsValidity, double WeightParam, double SigmaParam, UINT32 NumFocalRows, UINT32 NumFocalColumns)
virtual	~FILTER_FOCAL_AMPM ()

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Detailed Description

The Adaptive Mean P-Median filter (AMPM) is a variant of the P-Median filter that is designed to provide better smoothing in uniform regions while still preserving edges and line detail.

The filter first classifies the center cell in the filter window as belonging to either a uniform region or an edge region. The AMPM filter then applies the P-Median filter in regions containing edges, but uses a simple averaging filter in regions with relatively uniform values. The output of the AMPM filter in the edge regions is a user-controlled weighted average of the calculated P-Median filter value and the original center cell value; this weighting does not apply to the areas where simple averaging is performed.

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Constructor & Destructor Documentation

SPATMOD::IMAGE::FILTER_FOCAL_AMPM::FILTER_FOCAL_AMPM	(	STAGE *	pSourceImage,
		bool	TakeOwnershipSource,
		STATSVALIDITY	StatsValidity,
		double	WeightParam,
		double	SigmaParam,
		UINT32	NumFocalRows,
		UINT32	NumFocalColumns
	)

Constructor.

Parameters:

	pSourceImage	Source image stage
	TakeOwnershipSource	Filter takes ownership of source image
	StatsValidity	How to compute image statisitcs used in filter (fastest should be used for display, exact for processing)
	WeightParam	User-controlled weighted average of the input raster value and the P-Median value
	SigmaParam	User-controlled weight applied to sigma
	NumFocalRows	Number of rows in processing window
	NumFocalColumns	Number of columns in processing window

SPATMOD::IMAGE::FILTER_FOCAL_AMPM::FILTER_FOCAL_AMPM	(	STAGE *	pSourceImage,
		bool	TakeOwnershipSource,
		STAGE *	pMaskImage,
		bool	TakeOwnershipMask,
		STATSVALIDITY	StatsValidity,
		double	WeightParam,
		double	SigmaParam,
		UINT32	NumFocalRows,
		UINT32	NumFocalColumns
	)

Constructor with mask to determine areas to filter.

Parameters:

	pSourceImage	Source image stage
	TakeOwnershipSource	Filter takes ownership of source image
	pMaskImage	Mask, must have single component sample
	TakeOwnershipMask	Filter takes ownership of mask stage and will delete when needed
	StatsValidity	How to compute image statisitcs used in filter (fastest should be used for display, exact for processing)
	WeightParam	User-controlled weighted average of the input raster value and the P-Median value
	SigmaParam	User-controlled weight applied to sigma
	NumFocalRows	Number of rows in processing window
	NumFocalColumns	Number of columns in processing window

virtual SPATMOD::IMAGE::FILTER_FOCAL_AMPM::~FILTER_FOCAL_AMPM

(

)

[virtual]

Destructor.

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The documentation for this class was generated from the following file:

• spatmod/imagefilterfocal.h