Added an overload of render_face_detections() that takes just a single

full_object_detection.

dlib/image_processing/render_face_detections.h

@@ -58,6 +58,20 @@ namespace dlib
         return lines;
     }
 
+// ----------------------------------------------------------------------------------------
+
+    inline std::vector<image_window::overlay_line> render_face_detections (
+        const full_object_detection& det,
+        const rgb_pixel color = rgb_pixel(0,255,0)
+    )
+    {
+        std::vector<full_object_detection> dets;
+        dets.push_back(det);
+        return render_face_detections(dets);
+    }
+
+// ----------------------------------------------------------------------------------------
+
 }
 
 #endif // DLIB_RENDER_FACE_DeTECTIONS_H_

dlib/image_processing/render_face_detections_abstract.h

@@ -9,6 +9,8 @@
 namespace dlib
 {
 
+// ----------------------------------------------------------------------------------------
+
     inline std::vector<image_window::overlay_line> render_face_detections (
         const std::vector<full_object_detection>& dets,
         const rgb_pixel color = rgb_pixel(0,255,0)
@@ -26,6 +28,23 @@ namespace dlib
               necessary to render a face detection from dets.
     !*/
 
+// ----------------------------------------------------------------------------------------
+
+    inline std::vector<image_window::overlay_line> render_face_detections (
+        const full_object_detection& det,
+        const rgb_pixel color = rgb_pixel(0,255,0)
+    );
+    /*!
+        requires
+            - det.num_parts() == 68
+        ensures
+            - This function is identical to the above render_face_detections() routine
+              except that it takes just a single full_object_detection instead of a
+              std::vector of them.
+    !*/
+
+// ----------------------------------------------------------------------------------------
+
 }
 
 #endif // DLIB_RENDER_FACE_DeTECTIONS_ABSTRACT_H_