update

new file:   Makefile

.gitignore

@@ -1,5 +1,7 @@
-/bin
+/qrCamera/bin
-/obj
+/qrCamera/obj
-/cache
+/qrCamera/cache
 /createqrcodes/bin
-/createqrcodes/obj
+/createqrcodes/obj
+/qr
+/createqr

Makefile

@@ -0,0 +1,13 @@
+qr:
+	dotnet publish createqrcodes/createqrcodes.csproj -p:PublishSingleFile=true
+	mv createqrcodes/bin/Release/net10.0/linux-x64/publish/createqrcodes ./createqr
+
+clean:
+	rm -rf qrCamera/bin/
+	rm -rf qrCamera/obj/
+	rm -rf createqrcodes/obj/
+	rm -rf createqrcodes/bin/
+	rm -f createqr
+	rm -rf qr/
+run:
+	dotnet run -p:qrCamera/CameraPreview.csproj

createqrcodes/Program.cs

@@ -12,5 +12,6 @@ foreach (var item in files)
     string name = Path.GetFileName(item);
 
     //https://gitea.kqnori.pl/kq/qrcode/raw/branch/main/assets/gay.png
-    Process.Start("qrencode",$"https://gitea.kqnori.pl/kq/qrcode/raw/branch/main/assets/{item} -o qr/item{name.Split('.').First()}.png");
+    Console.WriteLine(name);
+    Process.Start("qrencode",$"https://gitea.kqnori.pl/kq/qrcode/raw/branch/main/assets/{name} -o qr/item{name.Split('.').First()}.png");
 }

qrCamera/Program.cs

@@ -7,6 +7,8 @@ using ZXing.Common;
 using System.Runtime.InteropServices;
 using System.Drawing;
 using System.Net;
+using System.Runtime.InteropServices.Marshalling;
+using Emgu.CV.Face;
 
 // using Emgu.CV.CvEnum;
 
@@ -24,10 +26,11 @@ namespace BarcodeReaderExample
 
             camera.Set(VideoCaptureProperties.FrameWidth, 1280);
             camera.Set(VideoCaptureProperties.FrameHeight, 720);
-            camera.Set(VideoCaptureProperties.Fps, 24);
+            int fps = 60;
-            if(Directory.Exists("cache"))
+            camera.Set(VideoCaptureProperties.Fps, fps);
+            if (Directory.Exists("cache"))
             {
-                Directory.Delete("cache",true);
+                Directory.Delete("cache", true);
             }
 
             Directory.CreateDirectory("cache");
@@ -35,6 +38,9 @@ namespace BarcodeReaderExample
             Mat[] Cached = new Mat[10];
 
 
+            int imgX = 0;
+            int imgY = 0;
+
             using var rgb = new Mat();
 
             // OpenCV stores camera frames as BGR.
@@ -44,35 +50,39 @@ namespace BarcodeReaderExample
 
 
             Cv2.NamedWindow("Camera preview", WindowFlags.AutoSize);
-            int photocount = 0;
+            // Mat src = Cv2.ImRead("test.png");
-                    Mat src = Cv2.ImRead("test.png");
+            int whenWasLastTimeQrDetected = 0;
+            Mat Lastimage = new Mat();
+            IEnumerable<IEnumerable<OpenCvSharp.Point>> contours = null;
+                    // PointF[] location;
 
-
+            string[] files = new string[20];
-
+            int files_index = 0;
-            string[] files = new string[10];
-            int files_index =0;
             while (true)
             {
-                // if (!camera.Read(frame) || frame.Empty())
+
-                // {
+
-                //     Console.Error.WriteLine("Nie udało się odczytać klatki");
-                //     break;
-                // }
                 camera.Read(frame);
 
+                Result result = ReadQrCode(frame);
+Console.WriteLine(Lastimage.Empty());
+                if (!(Lastimage.Empty()))
+                {
+                    
+                    Mat roi2 = frame[new Rect(0, 0, Lastimage.Width, Lastimage.Height)];
+                    Lastimage.CopyTo(roi2);
+                }
 
-                Result result = GetResult(frame);
                 if (result != null)
                 {
+                    whenWasLastTimeQrDetected = 5;
                     List<ResultPoint> points = result.ResultPoints.ToList();
                     float[] pos1 = new float[2] { points[0].X, points[0].Y }; /// lewy dolny róg
                     float[] pos2 = new float[2] { points[2].X, points[2].Y };   ///prawy górny róg
                     float[] pos3 = new float[2] { points[1].X, points[1].Y };   ///lewy górny róg
                     int width = (int)(pos2[0] - pos3[0]);
                     int heigh = (int)(pos1[1] - pos3[1]);
-                    // Cv2.Circle(frame, (int)pos1[0], (int)pos1[1], 5, Scalar.Red, 2);
+
-                    // Cv2.Circle(frame, (int)pos2[0], (int)pos2[1], 5, Scalar.Green, 2);
-                    // Cv2.Circle(frame, (int)pos3[0], (int)pos3[1], 5, Scalar.Blue, 2);  
                     PointF[] location;
                     try
                     {
@@ -83,19 +93,6 @@ namespace BarcodeReaderExample
                     {
                         continue;
                     }
-
-
-                    // Mat roi = frame[new Rect((int)pos3[0],(int)pos3[1], src.Width+3, src.Height)];
-                    Mat roi = frame[new Rect((int)pos3[0], (int)pos3[1], width,heigh)];
-                    src.CopyTo(roi);
-                    // Console.WriteLine($"szerokość:{width}");
-                    // Console.WriteLine($"wysokosc:{heigh}");
-                    // Console.WriteLine($"x:{pos3[0]}");
-                    // Console.WriteLine($"y:{pos3[1]}");
-
-                    // DrawLine(location);    //draw red squre
-
-
                     var points1 = new List<OpenCvSharp.Point>
 {
     GetPoint(location[0]),
@@ -103,23 +100,28 @@ namespace BarcodeReaderExample
     GetPoint(location[3]),
     GetPoint(location[2])
 };
-
+                    int qrWidth = GetPoint(location[1]).X - GetPoint(location[0]).X;
-                    // Zagnieźdź w dodatkową kolekcję:
+                    int qrHeigh = GetPoint(location[2]).Y - GetPoint(location[0]).Y;
-                    IEnumerable<IEnumerable<OpenCvSharp.Point>> contours = new[] { points1 };
 
 
-                    // Cv2.FillPoly(frame, contours, Scalar.White);   // fill with white
+                    imgX = GetPoint(location[0]).X;
+                    imgY = GetPoint(location[0]).Y;
+                    contours = new[] { points1 };
 
-                    Cv2.PutText(frame, result.Text, new OpenCvSharp.Point((int)(pos2[0]-pos3[0])/2+(int)pos3[0]-160, (int)(pos2[1]-pos3[1])/2+(int)pos3[1]+60), HersheyFonts.HersheySimplex, 0.8, Scalar.Black, 2);
+
+                    Cv2.FillPoly(frame, contours, Scalar.White);   // fill with white
+
+                    //Write Text
+                    // Cv2.PutText(frame, result.Text, new OpenCvSharp.Point((int)(pos2[0]-pos3[0])/2+(int)pos3[0]-160, (int)(pos2[1]-pos3[1])/2+(int)pos3[1]+60), HersheyFonts.HersheySimplex, 0.8, Scalar.Black, 2);
 
                     if (!files.Contains(result.Text))
                     {
                         files[files_index] = result.Text;
-                    Console.WriteLine("downloading: "+result.Text);
+                        Console.WriteLine("downloading: " + result.Text);
 
                         using (var client = new WebClient())
                         {
-                            client.DownloadFile(result.Text, "cache/"+files_index + ".png");
+                            client.DownloadFile(result.Text, "cache/" + files_index + ".png");
                             // Thread.Sleep(2000);
 
                         }
@@ -128,37 +130,54 @@ namespace BarcodeReaderExample
                     }
                     else
                     {
-                        // try
-                        // {
 
                         int toload = files.IndexOf(result.Text);
+                        Mat toDraw= new Mat();
+
+
+                        InputArray inputArray = toDraw;
+                        // Console.WriteLine($"{qrWidth} , {qrHeigh}");
+
+                        try
+                        {
+                            
+                        Cv2.Resize(Cached[toload],toDraw,new OpenCvSharp.Size(qrWidth,qrHeigh));
+                        }
+                        catch
+                        {continue;}
+                        Lastimage = toDraw;
+
+                        // toDraw.Resize(1,3);
+                        try
+                        {
+                            
+                        Mat roi2 = frame[new Rect(GetPoint(location[0]).X, GetPoint(location[0]).Y, toDraw.Width, toDraw.Height)];
+                        toDraw.CopyTo(roi2);
+                        }
+                        catch{}
 
-                            Mat roi2 = frame[new Rect((int)pos3[0], (int)pos3[1], Cached[toload].Width, Cached[toload].Height)];
-                            Cached[toload].CopyTo(roi2);
-                            // Console.WriteLine("work");
-                        // }
-                        // catch { }
                     }
 
 
-                    // Cv2.draw
+                }
+                else if (whenWasLastTimeQrDetected > 0)
+                {
+                    Cv2.FillPoly(frame, contours, Scalar.White);   // fill with white
 
-                    // Cv2.Circle(frame, (int)(RightBottomX), (int)(RightBottomY), 5, Scalar.Green, 2);  
+  try
+                        {
+                    Mat roi2 = frame[new Rect(imgX, imgY, Lastimage.Width, Lastimage.Height)];
+                    Lastimage.CopyTo(roi2);
+                        }
+                        catch{}
+                    whenWasLastTimeQrDetected--;
 
-                    //Cv2.Rectangle(frame, new Point((int)X, (int)Y), new Point ((int)Width, (int)Height), Scalar.Red, 2); 
-                    // Console.WriteLine(result.Text);
                 }
 
 
-
-
-                // frame.SaveImage($"photos/photo_{photocount}.png");
-                // photocount++;
-
-
                 Cv2.ImShow("Camera preview", frame);
-                Thread.Sleep(1000 / 24);
+                Thread.Sleep(1000 / fps);
-                // Console.WriteLine("tick");
+
                 int key = Cv2.WaitKey(1);
                 if (key == 27 || key == 'q')
                     break;
@@ -167,9 +186,13 @@ namespace BarcodeReaderExample
             Cv2.DestroyAllWindows();
 
         }
+
+        static void rotate()
+        {
+        }
         static OpenCvSharp.Point GetPoint(PointF pointf)
         {
-            return new OpenCvSharp.Point(pointf.X,pointf.Y);
+            return new OpenCvSharp.Point(pointf.X, pointf.Y);
         }
         static PointF[] Calculate(float[] pos1, float[] pos2, float[] pos3, float[] pos4)
         {
@@ -207,7 +230,7 @@ namespace BarcodeReaderExample
             PointF topRight = Expand(p2);
             PointF bottomRight = ExpandLB(p4);
             PointF bottomLeft = Expand(p1);
-            PointF[] Location = new PointF[] {topLeft,topRight,bottomLeft,bottomRight};
+            PointF[] Location = new PointF[] { topLeft, topRight, bottomLeft, bottomRight };
             return Location;
             // 4. Now draw the 4 lines
             // Example with System.Drawing or Unity or whatever you use:
@@ -234,7 +257,7 @@ namespace BarcodeReaderExample
         }
         static Mat frame = new Mat();
 
-        static Result GetResult(Mat frame)
+        static Result ReadQrCode(Mat frame)
         {
 
             QRCodeReader reader = new QRCodeReader();
@@ -288,13 +311,3 @@ namespace BarcodeReaderExample
     }
 }
 
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