public void StraightenAndCrop(string filename)
{
int handle = ImageOperations.SetImage(new Bitmap(filename));
ImageOperations.CardScan_RectifyRawImageHighGradientError(handle);
int handle2 = ImageOperations.Copy(handle);
ImageOperations.SizeHalve(handle, HalveSizeType.Average);
ImageOperations.Invert(handle);
float a = 90.0f - ImageOperations.HoughGradient(handle, 76, 104, 100);
ImageOperations.Rotate(handle2, a);
int minx = 0;
int miny = 0;
int maxx = 0;
int maxy = 0;
ImageOperations.CardScan_DetermineCardBounds(handle2, 20, ref minx, ref maxx, ref miny, ref maxy);
ImageOperations.Crop(handle2, minx, miny, maxx - minx + 1, maxy - miny + 1);
int handle3 = ImageOperations.Copy(handle2);
//ImageOperations.SizeHalve(handle3, HalveSizeType.Average);
ImageOperations.Threshold(handle3, 9);
int handle4 = ImageOperations.Copy(handle3);
int handle5 = ImageOperations.Copy(handle4);
ImageOperations.RLSA(handle3, 30, RLSA_Direction.Right);
ImageOperations.RLSA(handle4, 30, RLSA_Direction.Left);
ImageOperations.LogicalAnd(handle3, handle4);
ImageOperations.GetImage(handle3).Save(System.IO.Path.Combine(System.IO.Path.GetDirectoryName(filename), "__" + System.IO.Path.GetFileName(filename)));
List <System.Drawing.Rectangle> rs = ImageOperations.GenerateBoundingBoxes(handle3);
rs = ImageOperations.RemoveSmallBoxes(rs, 5);
for (int i = 0; i < rs.Count; ++i)
{
ImageOperations.DrawRectangle(handle5, rs[i], 128);
}
ImageOperations.GetImage(handle5).Save(System.IO.Path.Combine(System.IO.Path.GetDirectoryName(filename), "_" + System.IO.Path.GetFileName(filename)));
ImageOperations.DeleteImage(handle);
ImageOperations.DeleteImage(handle2);
ImageOperations.DeleteImage(handle3);
ImageOperations.DeleteImage(handle4);
ImageOperations.DeleteImage(handle5);
}