add unique ids

user-friendly-metrics.py

@@ -150,6 +150,8 @@ def calculate(predictions,
     for key in summary:
         summary[key] = summary[key][0]
 
+    summary["num_gt_ids"] = unique_gt_ids
+
     for th in recognition_thresholds:
         summary[f'recognition_{th}'] = recognition(tr_ratios, th)/unique_gt_ids