From a8499e3d0d81bc7631deb8d7b0a119485b61f324 Mon Sep 17 00:00:00 2001
From: Matt Hill <matthill@gmail.com>
Date: Fri, 8 May 2015 07:43:21 -0400
Subject: [PATCH] Ensure detection rectangle is always within image frame
 bounds

---
 src/openalpr/detection/detectorcpu.cpp  | 3 +++
 src/openalpr/detection/detectorcuda.cpp | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/src/openalpr/detection/detectorcpu.cpp b/src/openalpr/detection/detectorcpu.cpp
index ae6e794..40413c7 100644
--- a/src/openalpr/detection/detectorcpu.cpp
+++ b/src/openalpr/detection/detectorcpu.cpp
@@ -115,6 +115,9 @@ namespace alpr
       plates[i].y = (plates[i].y / scale_factor) + offset_y;
       plates[i].width = plates[i].width / scale_factor;
       plates[i].height = plates[i].height / scale_factor;
+      
+      // Ensure that the rectangle isn't < 0 or > maxWidth/Height
+      plates[i] = expandRect(plates[i], 0, 0, frame.cols, frame.rows);
     }
 
     vector<PlateRegion> orderedRegions = aggregateRegions(plates);
diff --git a/src/openalpr/detection/detectorcuda.cpp b/src/openalpr/detection/detectorcuda.cpp
index 83d4628..1fd42db 100644
--- a/src/openalpr/detection/detectorcuda.cpp
+++ b/src/openalpr/detection/detectorcuda.cpp
@@ -125,6 +125,9 @@ namespace alpr
       plates[i].y = (plates[i].y / scale_factor) + offset_y;
       plates[i].width = plates[i].width / scale_factor;
       plates[i].height = plates[i].height / scale_factor;
+      
+      // Ensure that the rectangle isn't < 0 or > maxWidth/Height
+      plates[i] = expandRect(plates[i], 0, 0, frame.cols, frame.rows);
     }
 
     vector<PlateRegion> orderedRegions = aggregateRegions(plates);