CropBlackBorders(Int32) Method

In This Topic

Detects and removes margins consisting of black color around a GdPicture image.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

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

public GdPictureStatus CropBlackBorders( 
   int ImageID
)

public function CropBlackBorders( 
    ImageID: Integer
): GdPictureStatus;

public function CropBlackBorders( 
   ImageID : int
) : GdPictureStatus;

public: GdPictureStatus CropBlackBorders( 
   int ImageID
)

public:
GdPictureStatus CropBlackBorders( 
   int ImageID
)

Parameters

ImageID: GdPicture image identifier.

Return Value

A member of the GdPictureStatus enumeration.

Remarks

This method or an overload of it is used in the "Image Processing" Demo.

Example

Removing the black margins from 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);
 
    // Detect and remove the black margins using the default confidence level.
    gdpictureImaging.CropBlackBorders(imageID);
    
    gdpictureImaging.SaveAsTIFF(imageID, "image.tif", TiffCompression.TiffCompressionCCITT4);
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members
Overload List
DeleteBlackBorders Method