GdPicture image identifier.

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GdPicture14 Namespace / GdPictureImaging Class / FxBitonalDilate4 Method

FxBitonalDilate4 Method (GdPictureImaging)

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Dilates black pixels in a GdPicture image or in an area of a GdPicture image defined by SetROI() method. This filter helps to dilate black pixels in 4 directions: N, S, W, E. The actions of this filter are less prominent than FxDilate8. It can be used used to improve very fine and degraded characters.
Public Function FxBitonalDilate4( _
   ByVal ImageID As Integer _
) As GdPictureStatus
public GdPictureStatus FxBitonalDilate4( 
   int ImageID
public function FxBitonalDilate4( 
    ImageID: Integer
): GdPictureStatus; 
public function FxBitonalDilate4( 
   ImageID : int
) : GdPictureStatus;
public: GdPictureStatus FxBitonalDilate4( 
   int ImageID
GdPictureStatus FxBitonalDilate4( 
   int ImageID


GdPicture image identifier.

Return Value

A member of the GdPictureStatus enumeration.
This method is used in the "Image Processing" and "Barcode Recognition"Demo.
Dilating a black and white tiff image.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
    // LoadInMemory parameter is set to true in order to be able to update the input file.
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.tif", true);
    // Dilates black pixels in 4 directions: N, S, W, E.
    gdpictureImaging.SaveAsTIFF(imageID, "image.tif", TiffCompression.TiffCompressionCCITT4);
See Also