Added a functor for testing if two rectangles overlap.

dlib/image_processing.h

@@ -7,6 +7,7 @@
 #include "image_processing/scan_image_pyramid.h"
 #include "image_processing/detection_template_tools.h"
 #include "image_processing/object_detector.h"
+#include "image_processing/box_overlap_testing.h"
 
 #endif // DLIB_IMAGE_PROCESSInG_H___
 

dlib/image_processing/box_overlap_testing.h

+// Copyright (C) 2011  Davis E. King (davis@dlib.net)
+// License: Boost Software License   See LICENSE.txt for the full license.
+#ifndef DLIB_BOX_OVERlAP_TESTING_H__
+#define DLIB_BOX_OVERlAP_TESTING_H__
+
+#include "box_overlap_testing_abstract.h"
+#include "../geometry.h"
+
+namespace dlib
+{
+
+// ----------------------------------------------------------------------------------------
+
+    class test_box_overlap
+    {
+    public:
+        test_box_overlap (
+        ) : overlap_thresh(0.5)
+        {}
+
+        test_box_overlap (
+            double overlap_thresh_
+        ) : overlap_thresh(overlap_thresh_) {}
+
+        bool operator() (
+            const dlib::rectangle& a,
+            const dlib::rectangle& b
+        ) const
+        {
+            const double inner = a.intersect(b).area();
+            const double outer = (a+b).area();
+            if (inner/outer > overlap_thresh)
+                return true;
+            else
+                return false;
+        }
+
+        double get_overlap_thresh (
+        ) const
+        {
+            return overlap_thresh;
+        }
+
+    private:
+        double overlap_thresh;
+    };
+
+// ----------------------------------------------------------------------------------------
+
+    inline void serialize (
+        const test_box_overlap& item,
+        std::ostream& out
+    )
+    {
+        serialize(item.get_overlap_thresh(), out);
+    }
+
+    inline void deserialize (
+        test_box_overlap& item,
+        std::istream& in 
+    )
+    {
+        double overlap_thresh;
+        deserialize(overlap_thresh, in);
+        item = test_box_overlap(overlap_thresh);
+    }
+
+// ----------------------------------------------------------------------------------------
+
+}
+
+#endif // DLIB_BOX_OVERlAP_TESTING_H__
+

dlib/image_processing/box_overlap_testing_abstract.h

+// Copyright (C) 2011  Davis E. King (davis@dlib.net)
+// License: Boost Software License   See LICENSE.txt for the full license.
+#undef DLIB_BOX_OVERlAP_TESTING_ABSTRACT_H__
+#ifdef DLIB_BOX_OVERlAP_TESTING_ABSTRACT_H__
+
+#include "../geometry.h"
+
+namespace dlib
+{
+
+// ----------------------------------------------------------------------------------------
+
+    class test_box_overlap
+    {
+    public:
+        test_box_overlap (
+        ) : overlap_thresh(0.5)
+        {}
+
+        test_box_overlap (
+            double overlap_thresh_
+        ) : overlap_thresh(overlap_thresh_) {}
+
+        bool operator() (
+            const dlib::rectangle& a,
+            const dlib::rectangle& b
+        ) const
+        {
+            const double inner = a.intersect(b).area();
+            const double outer = (a+b).area();
+            if (inner/outer > overlap_thresh)
+                return true;
+            else
+                return false;
+        }
+
+        double get_overlap_thresh (
+        ) const;
+
+    };
+
+// ----------------------------------------------------------------------------------------
+
+    void serialize (
+        const test_box_overlap& item,
+        std::ostream& out
+    );
+    /*!
+        provides serialization support
+    !*/
+
+    void deserialize (
+        test_box_overlap& item,
+        std::istream& in 
+    );
+    /*!
+        provides deserialization support
+    !*/
+
+// ----------------------------------------------------------------------------------------
+
+}
+
+#endif // DLIB_BOX_OVERlAP_TESTING_ABSTRACT_H__
+
+