Converted postprocessing steps to cpp as well.

media/RESULTS.md

@@ -278,24 +278,24 @@ Results of the model in various experiments on different datasets.
 (duration 00:00:56)
 ```json
 {
-  "avg_time_2d": 0.1016948051059369,
-  "avg_time_3d": 0.0012720597978310077,
-  "avg_fps": 9.711862169782414
+  "avg_time_2d": 0.09936108867737026,
+  "avg_time_3d": 0.0006794069231170969,
+  "avg_fps": 9.995952079181109
 }
 {
   "person_nums": {
     "total_frames": 301,
     "total_labels": 477,
-    "total_preds": 889,
-    "considered_empty": 2,
+    "total_preds": 886,
+    "considered_empty": 0,
     "valid_preds": 477,
-    "invalid_preds": 410,
+    "invalid_preds": 409,
     "missing": 0,
-    "invalid_fraction": 0.46223,
-    "precision": 0.53777,
+    "invalid_fraction": 0.46163,
+    "precision": 0.53837,
     "recall": 1.0,
-    "f1": 0.69941,
-    "non_empty": 887
+    "f1": 0.69993,
+    "non_empty": 886
   },
   "mpjpe": {
     "count": 477,