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. 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. It also has a SkipLinesCount which is the number of lines surrounding the image to be skipped and not considered as borders to be set as blanked. This method only detects rectangular borders, for all types of borders, please use DeleteBlackBorders() instead.

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

public GdPictureStatus CropBlackBordersEx( 
   int ImageID,
   float Confidence,
   int SkipLinesCount
)

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

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

public: GdPictureStatus CropBlackBordersEx( 
   int ImageID,
   float Confidence,
   int SkipLinesCount
) 

public:
GdPictureStatus CropBlackBordersEx( 
   int ImageID,
   float Confidence,
   int SkipLinesCount
) 

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 parameters.
    gdpictureImaging.CropBlackBordersEx(imageID, 99, 1);
    
    gdpictureImaging.SaveAsTIFF(imageID, "image.tif", TiffCompression.TiffCompressionCCITT4);
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}