Set the min region size for grid as the model size

frigate/app.py

@@ -487,7 +487,9 @@ def init_historical_regions(self) -> None:
         # create or update region grids for each camera
         for camera in self.config.cameras.values():
             self.region_grids[camera.name] = get_camera_regions_grid(
-                camera.name, camera.detect
+                camera.name,
+                camera.detect,
+                max(self.config.model.width, self.config.model.height),
             )
 
     def start_camera_processors(self) -> None:

frigate/comms/dispatcher.py

@@ -96,7 +96,11 @@ def _receive(self, topic: str, payload: str) -> None:
         elif topic == REQUEST_REGION_GRID:
             camera = payload
             self.camera_metrics[camera]["region_grid_queue"].put(
-                get_camera_regions_grid(camera, self.config.cameras[camera].detect)
+                get_camera_regions_grid(
+                    camera,
+                    self.config.cameras[camera].detect,
+                    max(self.config.model.width, self.config.model.height),
+                )
             )
         else:
             self.publish(topic, payload, retain=False)

frigate/util/object.py

@@ -30,7 +30,9 @@
 
 
 def get_camera_regions_grid(
-    name: str, detect: DetectConfig
+    name: str,
+    detect: DetectConfig,
+    min_region_size: int,
 ) -> list[list[dict[str, any]]]:
     """Build a grid of expected region sizes for a camera."""
     # get grid from db if available
@@ -99,7 +101,7 @@ def get_camera_regions_grid(
             box[1] * height,
             (box[0] + box[2]) * width,
             (box[1] + box[3]) * height,
-            320,
+            min_region_size,
             1.35,
         )
         # save width of region to grid as relative