Added config option to bypass detection.

If detection is bypassed, OpenALPR assumes the region provided is already a likely plate region

config/openalpr.conf.in

@@ -31,7 +31,8 @@ detection_strictness = 3
 max_detection_input_width = 1280
 max_detection_input_height = 720
 
-
+; Bypasses plate detection.  If this is set to 1, the library assumes that each region provided is a likely plate area.
+skip_detection = 0
 
 max_plate_angle_degrees = 15
 

src/openalpr/alpr_impl.cpp

@@ -104,7 +104,21 @@ namespace alpr
     }
 
     // Find all the candidate regions
-    response.plateRegions = plateDetector->detect(img, regionsOfInterest);
+    if (config->skipDetection == false)
+    {
+      response.plateRegions = plateDetector->detect(img, regionsOfInterest);
+    }
+    else
+    {
+      // They have elected to skip plate detection.  Instead, return a list of plate regions 
+      // based on their regions of interest
+      for (unsigned int i = 0; i < regionsOfInterest.size(); i++)
+      {
+        PlateRegion pr;
+        pr.rect = cv::Rect(regionsOfInterest[i]);
+        response.plateRegions.push_back(pr);
+      }
+    }
 
     queue<PlateRegion> plateQueue;
     for (unsigned int i = 0; i < response.plateRegions.size(); i++)

src/openalpr/config.cpp

@@ -137,6 +137,8 @@ namespace alpr
     maxDetectionInputWidth = getInt("common", "max_detection_input_width", 1280);
     maxDetectionInputHeight = getInt("common", "max_detection_input_height", 768);
 
+    skipDetection = getBoolean("common", "skip_detection", false);
+    
     maxPlateAngleDegrees = getInt("common", "max_plate_angle_degrees", 15);
 
     minPlateSizeWidthPx = getInt(country, "min_plate_size_width_px", 100);

src/openalpr/config.h

@@ -53,6 +53,8 @@ namespace alpr
       float maxPlateHeightPercent;
       int maxDetectionInputWidth;
       int maxDetectionInputHeight;
+      
+      bool skipDetection;
 
       int maxPlateAngleDegrees;