HistDIBThreshold

#include "BIFILTER.H"

 

HANDLE CALLBACK HistDIBThreshold(                  HANDLE hSrcDIB,
WORD      wConst,
int              iShowProgress,
HWND     hParent)

Description

This function creates a binary image. If a pixel value <= wConst, then the result is zero.If a pixel value > wConst,  then the result is the maximum pixel value. The result is put to a newly created DIB and the source DIB is unmodified. It works with 4, 8 or 24 bits/pixel. In case of 24 bits/pixel, the operation is made separately on the R, G, B channels. In case of 4 or 8 bits/pixel, the source DIB must contain grayscale images and the palette values in the source DIB must be monotone increasing. It makes no sense to use this function in case of 1 bits/pixel.

Parameters

HANDLE

hSrcDIB

Source DIB

WORD

wConst

Threshold 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

Handle of the newly created DIB on success or NULL on failure.

Requirements

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

Library :    Use BIFilter.lib.

DLLs :       BIFilter.dll.