Erodes black pixels in a GdPicture image or in an area of a GdPicture image defined by SetROI() method. This filter retains the black pixels surrounded in the four cardinal directions: N, S, W, E. Very useful when the characters are bold and very close to each other.

'Declaration
 
Public Function FxBitonalErode4( _
   ByVal ImageID As Integer _
) As GdPictureStatus

public GdPictureStatus FxBitonalErode4( 
   int ImageID
)

public function FxBitonalErode4( 
    ImageID: Integer
): GdPictureStatus; 

public function FxBitonalErode4( 
   ImageID : int
) : GdPictureStatus;

public: GdPictureStatus FxBitonalErode4( 
   int ImageID
) 

public:
GdPictureStatus FxBitonalErode4( 
   int ImageID
)