Posterize

 

The FilterPosterizing function/method of the BiFilter DLL/OCX can be used to posterize an image to reduce the color levels.

 

 

[C++]

 

/* Posterizing an image */

 

#include “BiFilter.h”

#include “BiImage.h”

 

HDIB hDibNew;

 

/* 1. parameter: Handle of the DIB to filter

   2. parameter: Level

   3. parameter: Show progress

   4. parameter: Handle of parent window */

 

hDibNew = FilterPosterizing(hDib, 20, DISPLAY_BOTH,

AfxGetMainWnd()->m_hWnd);

 

if (!hDibNew)

{

            // Error

}

 

[C#]

 

/* Posterizing an image */

 

long hDibNew;

 

/* 1. parameter: Handle of the DIB to filter

   2. parameter: Level

   3. parameter: Show progress

   4. parameter: Handle of parent window */

 

hDibNew = BiFilter.FilterPosterizing(hDib, 20, Convert.ToInt16(BIFILTERLib.enumDisplayModes.DispBoth),

Handle.ToInt64());

 

if (hDibNew == 0)

{

            // Error

}