Tries to deskew a GdPicture image to about ± 15 degrees. 

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

public GdPictureStatus AutoDeskew(
    int ImageID
);

Public Function AutoDeskew(
    ByVal ImageID As Integer
) As GdPictureStatus

A member of the GdPictureStatus enumeration.