public BarcodeCorrection(OmrPageOutput page, OmrBarcodeField barcode)
{
this.m_page = page;
this.m_expectedArea = barcode;
InitializeComponent();
// Crop the image
String tPath = Path.GetTempFileName();
using (Bitmap bmp = new Bitmap((int)barcode.TopRight.X - (int)barcode.TopLeft.X, (int)barcode.BottomLeft.Y - (int)barcode.TopLeft.Y, PixelFormat.Format24bppRgb))
using (Graphics g = Graphics.FromImage(bmp))
using (Image img = Image.FromFile(this.m_page.AnalyzedImage))
{
g.DrawImage(img, 0, 0, new Rectangle(new Point((int)barcode.TopLeft.X, (int)barcode.TopLeft.Y), bmp.Size), GraphicsUnit.Pixel);
bmp.Save(tPath);
}
// Rotate
using (Image img = Image.FromFile(tPath))
using (var rotated = new AForge.Imaging.Filters.RotateBilinear(-90).Apply((Bitmap)img))
using (var scaled = new AForge.Imaging.Filters.ResizeBilinear((int)(rotated.Width * 0.75), (int)(rotated.Height * .75)).Apply(rotated))
{
tPath = Path.GetTempFileName();
scaled.Save(tPath);
pbBarcode.ImageLocation = tPath;
}
}
private Bitmap GetRotateImage(Bitmap vLast, int factor)
{
if (factor == 0)
{
return(new Bitmap(vLast));
}
else
{
AForge.Imaging.Filters.RotateBilinear m = new AForge.Imaging.Filters.RotateBilinear(factor);
m.FillColor = Color.FromArgb(0, 254, 254, 254);
return(m.Apply(vLast));
}
}
//procedura obracania pliku graficznego i pliku z podglądem
public void rotation(double ang)
{
//inicjalizacja filtra
AForge.Imaging.Filters.RotateBilinear rot = new AForge.Imaging.Filters.RotateBilinear(ang);
//otwarcie plików
FileStream srcstream = new FileStream(pic_file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
FileStream prevstream = new FileStream(Server.MapPath("~/img/prev.bmp"), FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
//stworzenie bitmap
Bitmap source = new Bitmap(srcstream);
Bitmap prev = new Bitmap(prevstream);
//użycie filtra
source = rot.Apply(source);
//zapisanie wyniku
source.Save(Server.MapPath("~/img/tmp1.bmp"));
//zwolnienie bitmapy
((IDisposable)source).Dispose();
//zamknięcie strumienia
srcstream.Close();
prev = rot.Apply(prev);
int resX = 0;
int resY = 0;
//rozróżnianie obrazów poziomych od pionowych
if (prev.Width >= prev.Height)
{
resX = 200;
resY = (int)((prev.Height * 200) / prev.Width);
}
else
{
resX = (int)((prev.Width * 200) / prev.Height);
resY = 200;
}
prev.Save(Server.MapPath("~/img/prev1.bmp"));
((IDisposable)prev).Dispose();
prev = null;
prevstream.Close();
//ustalenie rozmiarów image1
Image1.Width = resX;
Image1.Height = resY;
}
private Bitmap GetRotateImage(Bitmap vLast, int factor)
{
if (factor == 0)
return new Bitmap(vLast);
else
{
AForge.Imaging.Filters.RotateBilinear m = new AForge.Imaging.Filters.RotateBilinear(factor);
m.FillColor = Color.FromArgb(0, 254, 254, 254);
return m.Apply(vLast);
}
}
