Added age and gender fields to image metadata.

dlib/data_io/image_dataset_metadata.cpp

@@ -80,6 +80,12 @@ namespace dlib
                         fout << " ignore='" << b.ignore << "'";
                     if (b.angle != 0)
                         fout << " angle='" << b.angle << "'";
+                    if (b.age != 0)
+                        fout << " age='" << b.age << "'";
+                    if (b.gender == FEMALE)
+                        fout << " gender='female'";
+                    else if (b.gender == MALE)
+                        fout << " gender='male'";
                     if (b.pose != 0)
                         fout << " pose='" << b.pose << "'";
                     if (b.detection_score != 0)
@@ -196,6 +202,18 @@ namespace dlib
                         if (atts.is_in_list("occluded"))  temp_box.occluded  = sa = atts["occluded"];
                         if (atts.is_in_list("ignore"))  temp_box.ignore  = sa = atts["ignore"];
                         if (atts.is_in_list("angle"))  temp_box.angle  = sa = atts["angle"];
+                        if (atts.is_in_list("age"))  temp_box.age  = sa = atts["age"];
+                        if (atts.is_in_list("gender"))  
+                        {
+                            if (atts["gender"] == "male")
+                                temp_box.gender = MALE;
+                            else if (atts["gender"] == "female")
+                                temp_box.gender = FEMALE;
+                            else if (atts["gender"] == "unknown")
+                                temp_box.gender = UNKNOWN;
+                            else
+                                throw dlib::error("Invalid gender string in box attribute.");
+                        }
                         if (atts.is_in_list("pose"))  temp_box.pose  = sa = atts["pose"];
                         if (atts.is_in_list("detection_score"))  temp_box.detection_score  = sa = atts["detection_score"];
 

dlib/data_io/image_dataset_metadata.h

@@ -14,6 +14,15 @@ namespace dlib
     namespace image_dataset_metadata
     {
 
+    // ------------------------------------------------------------------------------------
+
+        enum gender_t
+        {
+            UNKNOWN,
+            MALE,
+            FEMALE
+        };
+
     // ------------------------------------------------------------------------------------
 
         struct box
@@ -36,7 +45,9 @@ namespace dlib
                 ignore(false),
                 pose(0),
                 detection_score(0),
-                angle(0)
+                angle(0),
+                gender(UNKNOWN),
+                age(0)
             {}
 
             box (
@@ -49,7 +60,9 @@ namespace dlib
                 ignore(false),
                 pose(0),
                 detection_score(0),
-                angle(0)
+                angle(0),
+                gender(UNKNOWN),
+                age(0)
             {}
 
             rectangle rect;
@@ -72,6 +85,9 @@ namespace dlib
             // image counter-clockwise by angle radians.
             double angle; 
 
+            gender_t gender;
+            double age;
+
             bool has_label() const { return label.size() != 0; }
             /*!
                 ensures