/// <summary>
/// Auto crop borders
/// </summary>
/// <param name="bitmap">Bitmap</param>
/// <returns></returns>
public static Bitmap AutoCropBorders(Bitmap bitmap)
{
Bitmap resultImage = bitmap;
GdPictureImaging image = new GdPictureImaging();
int imageId = image.CreateGdPictureImageFromBitmap(bitmap);
try
{
if (imageId > 0)
{
image.CropBorders(imageId, ImagingContext.ContextDocument);
resultImage = image.GetBitmapFromGdPictureImage(imageId).CloneSmart(image.GetPixelFormat(imageId));
}
}
finally
{
image.ReleaseGdPictureImage(imageId);
}
return(resultImage);
}
