Try to make it work in Jetson Orin Nano

src/chicken_counter/motion.py

@@ -10,12 +10,14 @@ from chicken_counter.types import MotionState, TrackObservation
 
 
 class BackwardMotionDetector:
-    def __init__(self, config: MotionConfig, roi: RoiConfig) -> None:
+    def __init__(self, config: MotionConfig, roi: RoiConfig, *, verbose: bool = False) -> None:
         self.config = config
         self.roi = roi
         self.previous_gray: np.ndarray | None = None
         self.state = MotionState()
         self._roi_bounds = self._compute_roi_bounds()
+        self.verbose = verbose
+        self._update_count = 0
 
     def _compute_roi_bounds(self) -> tuple[int, int, int, int]:
         x_values = [point[0] for point in self.roi.points]
@@ -94,6 +96,25 @@ class BackwardMotionDetector:
             self.state.backward_active = False
 
         if self.state.consecutive_reverse_frames >= self.config.debounce_frames:
+            was_active = self.state.backward_active
             self.state.backward_active = True
+            if self.verbose and not was_active:
+                print(
+                    f"[motion #{self._update_count}] BACKWARD TRIGGERED! "
+                    f"smoothed_speed={self.state.smoothed_speed:.1f} "
+                    f"consecutive={self.state.consecutive_reverse_frames}"
+                )
+
+        if self.verbose:
+            self._update_count += 1
+            features_found = len(valid_prev) if points is not None and self.previous_gray is not None else 0
+            print(
+                f"[motion #{self._update_count}] "
+                f"features={features_found} "
+                f"median_speed={median_axis_speed:.1f} "
+                f"smoothed_speed={self.state.smoothed_speed:.1f} "
+                f"consecutive_rev={self.state.consecutive_reverse_frames} "
+                f"backward={self.state.backward_active}"
+            )
 
         return self.state