Made full_object_detection comparable via operator==

dlib/image_processing/full_object_detection.h

@@ -91,6 +91,22 @@ namespace dlib
             deserialize(item.parts, in);
         }
 
+        bool operator==(
+            const full_object_detection& rhs
+        ) const
+        {
+            if (rect != rhs.rect)
+                return false;
+            if (parts.size() != rhs.parts.size())
+                return false;
+            for (size_t i = 0; i < parts.size(); ++i)
+            {
+                if (parts[i] != rhs.parts[i]);
+                return false;
+            }
+            return true;
+        }
+
     private:
         rectangle rect;
         std::vector<point> parts;  

dlib/image_processing/full_object_detection_abstract.h

@@ -104,6 +104,14 @@ namespace dlib
                   when the return value of part() is equal to OBJECT_PART_NOT_PRESENT. 
                   This is useful for modeling object parts that are not always observed.
         !*/
+
+        bool operator==(
+            const full_object_detection& rhs
+        ) const;
+        /*!
+            ensures
+                - returns true if and only if *this and rhs have identical state.
+        !*/
     };
 
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