Camera - Destructor check videoCapture null.

AIParkingApplication/Camera.cs

@@ -10,6 +10,7 @@ namespace AIParkingApplication
         private string streamUrl;
         private volatile bool isFrameRequested;
         private Thread readStreamThread;
+        private VideoCapture videoCapture;
         public volatile Mat CurrentFrame;
 
         public event CameraEvent OnVideoFrameReceived;
@@ -21,11 +22,13 @@ namespace AIParkingApplication
             isFrameRequested = false;
             readStreamThread = new Thread(new ThreadStart(ReadVideoStream));
             readStreamThread.IsBackground = true;
+            videoCapture = new VideoCapture();
         }
 
         ~Camera()
         {
             Stop();
+            videoCapture?.Dispose();
         }
 
         public void Start()
@@ -45,7 +48,6 @@ namespace AIParkingApplication
 
         public void ReadVideoStream()
         {
-            VideoCapture videoCapture = new VideoCapture();     //TODO: Need to dispose this videoCapture?
             Mat videoFrame = new Mat();
             if (!videoCapture.Open(streamUrl))
             {

AIParkingApplication/LaneIn.cs

@@ -62,49 +62,37 @@ namespace AIParkingApplication
         {
             var cardInfoResult = await apiController.GetCardInformation(cardNumber);
             if (cardInfoResult.IsValid)
+            {
+                if (cardInfoResult.Direction == "in")
                 {
                     plateCamera.RequestCaptureOneFrame();
                     overviewCamera.RequestCaptureOneFrame();
                     await Task.Delay(200);
+
                     var plateVideoFrame = plateCamera.CurrentFrame;                    
-                var overviewVideoFrame = overviewCamera.CurrentFrame;
-
-                pictureBoxOverviewImage.Invoke(new Action(() =>
-                {
-                    pictureBoxOverviewImage.Image?.Dispose();
-                    pictureBoxOverviewImage.Image = overviewVideoFrame.ToBitmap();
-                }));
-
                     FinalPlateResult result = await ProcessFrameImage(plateProcessor, plateVideoFrame, isRetryMode);
-
                     pictureBoxPlateImage.Invoke(new Action(() =>
                     {
                         pictureBoxPlateImage.Image?.Dispose();
                         pictureBoxPlateImage.Image = result.PlateImage.ToBitmap();
                     }));
 
-                var cardInformation = await apiController.GetCardInformation(cardNumber);
+                    var overviewVideoFrame = overviewCamera.CurrentFrame;
+                    pictureBoxOverviewImage.Invoke(new Action(() =>
+                    {
+                        pictureBoxOverviewImage.Image?.Dispose();
+                        pictureBoxOverviewImage.Image = overviewVideoFrame.ToBitmap();
+                    }));
 
+                    var cardInformation = await apiController.GetCardInformation(cardNumber);
                     ShowCardInfoOnUI(cardNumber, result.PlateString, cardInformation.CardType, DateTime.Now.ToString(AppConstant.DATETIME_FORMAT));
 
-                //TODO check saveLogResult
                     var saveLogResult = await apiController.SaveLog(LaneDirection.In, cardInformation.CardRealID.ToString(), "1", result.PlateType, DateTime.Now.ToString(AppConstant.DATETIME_FORMAT), result.PlateString, result.PlateImage, result.PlateImage, result.PlateImage, overviewVideoFrame);
                     if (saveLogResult.Status)
                     {
-                    if (isAutoOpenDoor)
+                        if (isAutoOpenDoor && this.doorId == doorId)
                         {
-                        if (this.doorId == doorId)
-                        {
-                            var openDoorResult = c3Device.OpenDoor(doorId);
-                            if (openDoorResult.HasError)
-                            {
-                                lblRecogizePlateStatus.Invoke(new Action(() =>
-                                {
-                                    lblRecogizePlateStatus.BackColor = Color.Red;
-                                    lblRecogizePlateStatus.Text = "KHÔNG THỂ MỞ CỬA";
-                                }));
-                            }
-                        }
+                            OpenDoor(doorId);
                         }
                     }
                     else
@@ -117,6 +105,15 @@ namespace AIParkingApplication
                     }
                 }
                 else
+                {
+                    lblRecogizePlateStatus.Invoke(new Action(() =>
+                    {
+                        lblRecogizePlateStatus.BackColor = Color.Red;
+                        lblRecogizePlateStatus.Text = "THẺ ĐÃ ĐƯỢC SỬ DỤNG";
+                    }));
+                }
+            }
+            else
             {
                 lblRecogizePlateStatus.Invoke(new Action(() =>
                 {
@@ -144,6 +141,18 @@ namespace AIParkingApplication
             }));
         }
 
+        private void OpenDoor(int doorId)
+        {
+            if (c3Device.OpenDoor(doorId).HasError)
+            {
+                lblRecogizePlateStatus.Invoke(new Action(() =>
+                {
+                    lblRecogizePlateStatus.BackColor = Color.Red;
+                    lblRecogizePlateStatus.Text = "KHÔNG THỂ KẾT NỐI TỚI THIẾT BỊ MỞ CỬA";
+                }));
+            }
+        }
+
         private async Task<FinalPlateResult> ProcessFrameImage(PlateProcessor plateProcessor, Mat frame, bool isRetryMode)
         {
             try

AIParkingApplication/PlateDetector.cs

@@ -23,6 +23,11 @@ namespace AIParkingApplication
             plateCascadeClassifier = new CascadeClassifier(this.plateType == PlateType.Square ? PlateDetectorConstant.SQUARE_PLATE_WEIGHT_FILENAME : PlateDetectorConstant.LONG_PLATE_WEIGHT_FILENAME);
         }
 
+        ~PlateDetector()
+        {
+            plateCascadeClassifier?.Dispose();
+        }
+
         public Mat DetectPlate(Mat frame)
         {
             Rect[] plateRectsDetected = plateCascadeClassifier.DetectMultiScale(frame, scaleFactor, minNeighbors, HaarDetectionType.ScaleImage, minSizePlate, maxSizePlate);