Smarter Regions (#8194)

* Smarter Regions

* Formatting

* Cleanup

* Fix motion region checking logic

* Add database table and migration for regions

* Update region grid on startup

* Revert init delay change

* Fix mypy

* Move object related functions to util

* Remove unused

* Fix tests

* Remove log

* Update the region daily at 2

* Fix logic

* Formatting

* Initialize grid before starting processing frames

* Move back to creating grid in main process

* Formatting

* Fixes

* Formating

* Fix region check

* Accept all but true

* Use regions grid for startup scan

* Add clarifying comment

* Fix new grid requests

* Add tests

* Delete stale region grids from DB

frigate/track/norfair_tracker.py

@@ -77,7 +77,7 @@ class NorfairTracker(ObjectTracker):
         self.tracker = Tracker(
             distance_function=frigate_distance,
             distance_threshold=2.5,
-            initialization_delay=config.detect.fps / 2,
+            initialization_delay=0,
             hit_counter_max=self.max_disappeared,
         )
         if self.ptz_autotracker_enabled.value:
@@ -106,6 +106,11 @@ class NorfairTracker(ObjectTracker):
             "ymax": self.detect_config.height,
         }
 
+        # start object with a hit count of `fps` to avoid quick detection -> loss
+        next(
+            (o for o in self.tracker.tracked_objects if o.global_id == track_id)
+        ).hit_counter = self.camera_config.detect.fps
+
     def deregister(self, id, track_id):
         del self.tracked_objects[id]
         del self.disappeared[id]