void device_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs)
{
Bitmap shoot = eventArgs.Frame.Clone() as Bitmap;
try
{
frameCounter++;
if (frameCounter > 10)
{
invoices = invoiceProcess.GetInvoiceCollection(shoot);
frameCounter = 0;
}
if (invoices != null && invoices.Count > 0)
{
using (Graphics graph = Graphics.FromImage(shoot))
{
foreach (Invoice invoice in invoices)
{
graph.DrawPolygon(pen, invoice.Corners); //Draw a polygon around card
PointF point = invoiceProcess.GetStringPoint(invoice.Corners); //Find Top left corner
point.Y += 10;
graph.DrawString(invoice.Code == null ? "" : invoice.Code, font, Brushes.Lime, point); //Write string on card
}
}
}
//Draw Rectangle around cards and write card strings on card
}
catch (Exception ex)
{
File.AppendAllText("e:\\error.txt", ex.Message);
throw;
}
pb_Cinema.Image = ResizeShoot(shoot);
}
public InvoiceCollection GetInvoiceCollection(Bitmap source)
{
InvoiceCollection collection = new InvoiceCollection(); //Collection that will hold cards
Bitmap temp = source.Clone() as Bitmap; //Clone image to keep original image
FiltersSequence seq = new FiltersSequence();
seq.Add(Grayscale.CommonAlgorithms.BT709); //First add grayScaling filter
seq.Add(new OtsuThreshold()); //Then add binarization(thresholding) filter
temp = seq.Apply(source); // Apply filters on source image
//Extract blobs from image whose size width and height larger than 150
BlobCounter extractor = new BlobCounter();
extractor.FilterBlobs = true;
extractor.MinWidth = extractor.MinHeight = InvoiceHeight - 50;
extractor.MaxWidth = extractor.MaxHeight = InvoiceWidth + 50;
extractor.ProcessImage(temp);//去掉不符合宽高的色块
//Will be used transform(extract) cards on source image
QuadrilateralTransformation quadTransformer = new QuadrilateralTransformation();
//Will be used resize(scaling) cards
ResizeBilinear resizer = new ResizeBilinear(InvoiceWidth, InvoiceHeight);
foreach (Blob blob in extractor.GetObjectsInformation())
{
//Get Edge points of card
List <IntPoint> edgePoints = extractor.GetBlobsEdgePoints(blob);
//Calculate/Find corners of card on source image from edge points
List <IntPoint> corners = PointsCloud.FindQuadrilateralCorners(edgePoints);
quadTransformer.SourceQuadrilateral = corners; //Set corners for transforming card
quadTransformer.AutomaticSizeCalculaton = true;
//提取图像
Bitmap invocieImg = quadTransformer.Apply(source); //Extract(transform) card image
if (invocieImg.Width < invocieImg.Height) //If card is positioned horizontally
{
invocieImg.RotateFlip(RotateFlipType.Rotate90FlipNone); //Rotate
}
invocieImg = resizer.Apply(invocieImg); //归一化图像
// File.AppendAllText("e:\\info.txt", "aaaaaaaaaaaaaaa");
// File.AppendAllText("e:\\info.txt",invocieImg.FrameDimensionsList.ToString());
//invocieImg.Save("e:\\" + Guid.NewGuid() + ".jpg");
// Thread.Sleep(1000);
Invoice invoice = new Invoice(invocieImg, corners.ToArray()); //Create invoice Object
Bitmap target = invoice.GetTarget();
//try
//{
// // target.Save("e:\\imgt\\" + Guid.NewGuid() + "taar.jpg");
//}
//catch (Exception ex)
//{
// File.AppendAllText("E:\\error2.txt", ex.Message + "**********"+ex.Source);
// throw;
//}
try
{
invoice.Code = ImageProcess.GetYZMCode(target, "zimo.txt", 4, 20, 30, 2, false, 4);
collection.Add(invoice); //Add card to collection
}
catch (Exception ex)
{
File.AppendAllText("E:\\error2.txt", ex.Message + "**********" + ex.Source + "---" + DateTime.Now);
throw;
}
}
return(collection);
}
