默认车牌，人形，人脸线程数

mainwindow.cpp

@@ -37,9 +37,10 @@ MainWindow::MainWindow()
     
     float heightReference=qSetting->value("devices/height_reference").toFloat();
     int uniformColor=qSetting->value("devices/uniformColor").toInt();
-    int humanDetectionLen=qSetting->value("devices/humanDetectionLen").toInt();
-    int licensePlateLen=qSetting->value("devices/licensePlateLen").toInt();
-    int faceLen=qSetting->value("devices/faceLen").toInt();
+
+    int humanDetectionLen=qSetting->value("devices/humanDetectionLen",3).toInt();
+    int licensePlateLen=qSetting->value("devices/licensePlateLen",3).toInt();
+    int faceLen=qSetting->value("devices/faceLen",3).toInt();
 
 
     float carShapeConfidence=qSetting->value("devices/carShapeConfidence").toFloat();