From 80dc52dde6c2d1f964bfc25784f7be82cf27b85e Mon Sep 17 00:00:00 2001
From: Théo de la Hogue
Date: Wed, 11 May 2022 11:24:14 +0200
Subject: Printing aruco tracking metrics.

---
 src/argaze/ArUcoMarkers/ArUcoTracker.py               | 19 +++++++++++++++++++
 .../utils/export_tobii_segment_aruco_visual_scan.py   | 16 +++++++++++++---
 2 files changed, 32 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/argaze/ArUcoMarkers/ArUcoTracker.py b/src/argaze/ArUcoMarkers/ArUcoTracker.py
index 363a5bb..6a71e86 100644
--- a/src/argaze/ArUcoMarkers/ArUcoTracker.py
+++ b/src/argaze/ArUcoMarkers/ArUcoTracker.py
@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 
 import json
+from collections import Counter
 
 from argaze.ArUcoMarkers import ArUcoMarkersDictionary, ArUcoCamera
 
@@ -74,6 +75,10 @@ class ArUcoTracker():
         self.__board_corners = []
         self.__board_corners_ids = []
 
+        # define track metrics data
+        self.__track_count = 0
+        self.__tracked_markers = []
+
     def load_configuration_file(self, configuration_filepath):
         """Load aruco detection parameters from .json file."""
         
@@ -108,6 +113,11 @@ class ArUcoTracker():
         gray = cv.cvtColor(frame, cv.COLOR_BGR2GRAY)
         self.__markers_corners, self.__markers_ids, rejectedPoints = aruco.detectMarkers(gray, self.__aruco_dict.get_markers(), parameters = self.__detector_parameters)
 
+        # update track metrics
+        self.__track_count += 1
+        for marker_id in self.get_markers_ids():
+            self.__tracked_markers.append(marker_id)
+
         if len(self.__markers_corners) > 0 and estimate_pose:
 
             # markers pose estimation
@@ -163,6 +173,15 @@ class ArUcoTracker():
 
             cv.drawChessboardCorners(frame, ((self.__board.get_size()[0] - 1 ), (self.__board.get_size()[1] - 1)), self.__board_corners, True)
 
+    def reset_track_metrics(self):
+        """Enable marker tracking metrics."""
+        self.__track_count = 0
+        self.__tracked_markers = []
+
+    def get_track_metrics(self):
+        """Get marker tracking metrics."""
+        return self.__track_count, Counter(self.__tracked_markers)
+
     def get_markers_dictionay(self):
         """Get tracked aruco markers dictionary."""
         return self.__aruco_dict
diff --git a/src/argaze/utils/export_tobii_segment_aruco_visual_scan.py b/src/argaze/utils/export_tobii_segment_aruco_visual_scan.py
index 7a270f3..6c34ba9 100644
--- a/src/argaze/utils/export_tobii_segment_aruco_visual_scan.py
+++ b/src/argaze/utils/export_tobii_segment_aruco_visual_scan.py
@@ -161,7 +161,7 @@ def main():
         try:
 
             # Initialise progress bar
-            MiscFeatures.printProgressBar(0, tobii_segment_video.get_duration(), prefix = 'Progress:', suffix = 'Complete', length = 100)
+            MiscFeatures.printProgressBar(0, tobii_segment_video.get_duration()/1000, prefix = 'Progress:', suffix = 'Complete', length = 100)
 
             # Iterate on video frames
             for video_ts, video_frame in tobii_segment_video.frames():
@@ -239,7 +239,7 @@ def main():
 
                 # Update Progress Bar
                 progress = video_ts_ms - int(args.time_range[0] * 1000)
-                MiscFeatures.printProgressBar(progress, tobii_segment_video.get_duration(), prefix = 'Progress:', suffix = 'Complete', length = 100)
+                MiscFeatures.printProgressBar(progress, tobii_segment_video.get_duration()/1000, prefix = 'Progress:', suffix = 'Complete', length = 100)
 
         # Exit on 'ctrl+C' interruption
         except KeyboardInterrupt:
@@ -250,7 +250,13 @@ def main():
 
         # End output video file
         output_video.close()
-        print(f'\nVisual scan video saved into {vs_video_filepath}')
+
+        # Print aruco tracking metrics
+        print('\nAruco marker tracking metrics')
+        try_count, tracked_counts = aruco_tracker.get_track_metrics()
+
+        for marker_id, tracked_count in tracked_counts.items():
+            print(f'Markers {marker_id} has been detected in {tracked_count} / {try_count} frames ({round(100 * tracked_count / try_count, 2)} %)')
 
         # Build visual scan based on a pointer position
         visual_scan = GazeFeatures.PointerBasedVisualScan(ts_aois_scenes, ts_gaze_positions)
@@ -264,6 +270,10 @@ def main():
         cv.imwrite(vs_visu_filepath, visu_frame)
         print(f'Visual scan image saved into {vs_visu_filepath}')
 
+        # Notify where the visual scan video has been exported
+        print(f'Visual scan video saved into {vs_video_filepath}')
+
+
 if __name__ == '__main__':
 
     main()
\ No newline at end of file
-- 
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