AutoDeskew(Int32,Boolean) Method

In This Topic

Tries to deskew a GdPicture image. Deskewing an image can help a lot to do OCR, OMR, barcode detection or just improve the readability of an image.

Syntax

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

'Declaration
 
Public Overloads Function AutoDeskew( _
   ByVal ImageID As Integer, _
   ByVal Optimistic As Boolean _
) As GdPictureStatus

public GdPictureStatus AutoDeskew( 
   int ImageID,
   bool Optimistic
)

public function AutoDeskew( 
    ImageID: Integer;
    Optimistic: Boolean
): GdPictureStatus;

public function AutoDeskew( 
   ImageID : int,
   Optimistic : boolean
) : GdPictureStatus;

public: GdPictureStatus AutoDeskew( 
   int ImageID,
   bool Optimistic
)

public:
GdPictureStatus AutoDeskew( 
   int ImageID,
   bool Optimistic
)

Parameters

ImageID: GdPicture image identifier.
Optimistic: Determines if the engine must be optimistic in the skew detection. For example, set true when you know the image has a skew and false otherwise. Value used by other overloads is False.

Return Value

A member of the GdPictureStatus enumeration.

Example

Deskewing a tiff image.

using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("skewed.tif");
 
    gdpictureImaging.AutoDeskew(imageID, true);
 
    // Let's encode the new tiff with the same mode used by the input image.
    TiffCompression tiffCompression = gdpictureImaging.GetTiffCompression(imageID);
 
    gdpictureImaging.SaveAsTIFF(imageID, "deskewed.tif", tiffCompression);
    gdpictureImaging.ReleaseGdPictureImage(imageID);
}

Reference

GdPictureImaging Class
GdPictureImaging Members
Overload List
GetSkewAngle(Int32,Single) Method