Detects and sets to White, margins consisting of black color around a GdPicture image. This method does not have the same behavior as the CropBlackBorders() method: The black borders are not removed but are set to blank. Therefore, the image dimensions are kept the same. It has a Confidence Parameter where if the lines and borders detection confidence exceeds this value they will be set as blank, and left as they are if the confidence in detecting them is less than the Confidence Parameter Value.

'Declaration
 
Public Overloads Function CropBlackBordersEx( _
   ByVal ImageID As Integer, _
   ByVal Confidence As Single _
) As GdPictureStatus

public GdPictureStatus CropBlackBordersEx( 
   int ImageID,
   float Confidence
)

public function CropBlackBordersEx( 
    ImageID: Integer;
    Confidence: Single
): GdPictureStatus; 

public function CropBlackBordersEx( 
   ImageID : int,
   Confidence : float
) : GdPictureStatus;

public: GdPictureStatus CropBlackBordersEx( 
   int ImageID,
   float Confidence
) 

public:
GdPictureStatus CropBlackBordersEx( 
   int ImageID,
   float Confidence
) 

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 set to white the black margins using the custom confidence level.
    gdpictureImaging.CropBlackBordersEx(imageID, 99);
    
    gdpictureImaging.SaveAsTIFF(imageID, "image.tif", TiffCompression.TiffCompressionCCITT4);
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}