In This Topic ▼

LBitmap::BinaryFilter

Summary

Imposes a binary filter on the class object's bitmap.

Syntax

#include "ltwrappr.h"

virtual L_INT LBitmap::BinaryFilter(pFilter, uFlags = 0)

Parameters

pBINARYFLT pFilter

Pointer to the binary filter to use. You can use one of the following predefined filters:

Value	Meaning
BFLT_EROSION_OMNI	[#define] Shrinks black objects in the image. The effect is biased in the specified direction.
BFLT_EROSION_HORZ
BFLT_EROSION_VERT
BFLT_EROSION_DIAG
BFLT_DILATION_OMNI	[#define] Enlarges black objects in the image. The effect is biased in the specified direction.
BFLT_DILATION_HORZ
BFLT_DILATION_VERT
BFLT_DILATION_DIAG

L_UINT32 uFlags

Reserved for future use. Must be 0.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

To update a status bar or detect a user interrupt during execution of this function, refer to LBase::EnableStatusCallback.

This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Binary Filter Function - Before

Binary Filter Function - After

View additional platform support for this Binary Filter function.

Required DLLs and Libraries

LTDIS
LTFIL
LTIMGEFX
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

Example

L_INT LBitmap__BinaryFilterExample() 
{ 
   L_INT nRet; 
   LBitmap m_Bitmap; 
    
   nRet =m_Bitmap.Load(MAKE_IMAGE_PATH(TEXT("ImageProcessingDemo\\Image1.jpg")), 0,ORDER_BGR); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet =m_Bitmap.BinaryFilter(BFLT_DILATION_OMNI); 
   if(nRet !=SUCCESS) 
      return nRet; 
 
   return SUCCESS; 
}