Adaptive MMSE Filter

#include "BIFILTER.H"

 

HANDLE CALLBACK FilterAdaptiveMMSE(              HDIB      hDIB,
int           N,
int           NVAR,
int           iShowProgress,
HWND  hParent)

Description

This function will filter the image by the adaptive MMSE filter method. This function works for only monochrome, 8 bit per bixel and 24 bit per pixel images. The minimum mean-square error filter makes use of the knowledge of the local variance to determine if a mean filter is to be applied to the local region of an image. This filter works best for additive type short tail noise.

Examples

Description: Gauss                                    Description: ammse

The original 256 x 256 pixel image corrupted by additive Gauss noise and the adaptive MMSE filtered image with N = 5 and NVAR = 130 parameter values.


Parameters

HDIB

hDIB

Handle of the DIB to filter.

int

N

This parameter specifies the size of the matrix used by the filter. See the description and examples above for further information and a possible value.

int

NVAR

This parameter specifies the variation of the noise corrupts the image. See the description and examples above for further information and a possible value.

int

iShowProgress

This parameter specifies the displaying of the progressbar and the preview dialog.

Available values:

DISPLAY_NONE (0)      -     The progressbar and the preview dialog will not display before filtering.

DISPLAY_PROGRESS (1) -The progressbar will display during filtering procedure.

DISPLAY_DIALOG (2) -     The preview dialog will display before filtering. This dialog shows the part of the image before and after filtering.

DISPLAY_BOTH (3)      -     The progressbar and the preview dialog will display.

IMPORTANT:   The preview dialog will only display, if there is BiDlgs.dll installed.

HWND

hParent

Handler of the parent window.

Return values

The handle of the new filtered DIB or NULL if an error occurred.

Programming notes

The function will not free the input DIB.

Requirements

Header :    Declared in BIFilter.h; include BIFilter.h.

Library :    Use BIFilter.lib.

DLLs :       BIFilter.dll , BIDlgs32.dl.