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zoom logic

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This commit is contained in:
Josh Hawkins 2023-10-02 10:02:22 -05:00
parent 4fc2a5f340
commit f4b7057486
1 changed files with 32 additions and 13 deletions
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43
frigate/ptz/autotrack.py
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@ -547,6 +547,13 @@ class PtzAutoTracker:
edge_threshold = 0.15 edge_threshold = 0.15
velocity_threshold = 0.1 velocity_threshold = 0.1
far_from_edge = (
bb_left > edge_threshold * camera_width
and bb_right < (1 - edge_threshold) * camera_width
and bb_top > edge_threshold * camera_height
and bb_bottom < (1 - edge_threshold) * camera_height
)
# make sure object is centered in the frame # make sure object is centered in the frame
below_distance_threshold = self._below_distance_threshold(camera, obj) below_distance_threshold = self._below_distance_threshold(camera, obj)
@ -562,7 +569,7 @@ class PtzAutoTracker:
abs(average_velocity[0]) * camera_fps < (camera_width * velocity_threshold) abs(average_velocity[0]) * camera_fps < (camera_width * velocity_threshold)
and abs(average_velocity[1]) * camera_fps and abs(average_velocity[1]) * camera_fps
< (camera_height * velocity_threshold) < (camera_height * velocity_threshold)
and distance <= 5 and distance <= 10
) )
logger.debug(f"Zoom test: left edge: {bb_left > edge_threshold * camera_width}") logger.debug(f"Zoom test: left edge: {bb_left > edge_threshold * camera_width}")
@ -573,6 +580,9 @@ class PtzAutoTracker:
logger.debug( logger.debug(
f"Zoom test: bottom edge: {bb_bottom < (1 - edge_threshold) * camera_height}" f"Zoom test: bottom edge: {bb_bottom < (1 - edge_threshold) * camera_height}"
) )
logger.debug(
f"Zoom test: below distance threshold {(below_distance_threshold or below_area_threshold)}"
)
logger.debug( logger.debug(
f"Zoom test: below area threshold: {below_area_threshold} ratio: {obj.obj_data['area']/camera_area}, threshold value: {1-self.zoom_factor[camera]}" f"Zoom test: below area threshold: {below_area_threshold} ratio: {obj.obj_data['area']/camera_area}, threshold value: {1-self.zoom_factor[camera]}"
) )
@ -581,15 +591,19 @@ class PtzAutoTracker:
) )
# returns True to zoom in, False to zoom out # returns True to zoom in, False to zoom out
return ( # Zoom in conditions
bb_left > edge_threshold * camera_width if (
and bb_right < (1 - edge_threshold) * camera_width far_from_edge
and bb_top > edge_threshold * camera_height and (below_distance_threshold or below_area_threshold)
and bb_bottom < (1 - edge_threshold) * camera_height
and below_distance_threshold
and below_area_threshold
and below_velocity_threshold and below_velocity_threshold
) ):
return True
# Zoom out conditions
if not far_from_edge and below_distance_threshold:
return False
return False
def _autotrack_move_ptz(self, camera, obj): def _autotrack_move_ptz(self, camera, obj):
camera_config = self.config.cameras[camera] camera_config = self.config.cameras[camera]
@ -624,7 +638,7 @@ class PtzAutoTracker:
# get euclidean distance of the two points, sometimes the estimate is way off # get euclidean distance of the two points, sometimes the estimate is way off
distance = np.linalg.norm([x2 - x1, y2 - y1]) distance = np.linalg.norm([x2 - x1, y2 - y1])
if distance <= 5: if distance <= 7:
# this box could exceed the frame boundaries if velocity is high # this box could exceed the frame boundaries if velocity is high
# but we'll handle that in _enqueue_move() as two separate moves # but we'll handle that in _enqueue_move() as two separate moves
predicted_box = [ predicted_box = [
@ -648,8 +662,10 @@ class PtzAutoTracker:
self._enqueue_move(camera, obj.obj_data["frame_time"], pan, tilt, zoom) self._enqueue_move(camera, obj.obj_data["frame_time"], pan, tilt, zoom)
def _autotrack_move_zoom_only(self, camera, obj): def _autotrack_move_zoom_only(self, camera, obj):
zoom = self._get_zoom_amount(camera, obj, obj.obj_data["box"]) camera_config = self.config.cameras[camera]
if camera_config.onvif.autotracking.zooming == ZoomingModeEnum.absolute:
zoom = self._get_zoom_amount(camera, obj, obj.obj_data["box"])
self._enqueue_move(camera, obj.obj_data["frame_time"], 0, 0, zoom) self._enqueue_move(camera, obj.obj_data["frame_time"], 0, 0, zoom)
def _get_zoom_amount(self, camera, obj, predicted_box): def _get_zoom_amount(self, camera, obj, predicted_box):
@ -674,6 +690,7 @@ class PtzAutoTracker:
zoom = min(1.0, zoom_level + 0.1) zoom = min(1.0, zoom_level + 0.1)
else: else:
zoom = max(0.0, zoom_level - 0.1) zoom = max(0.0, zoom_level - 0.1)
# don't make small movements to zoom in if area hasn't changed significantly # don't make small movements to zoom in if area hasn't changed significantly
# but always zoom out if necessary # but always zoom out if necessary
if ( if (
@ -707,11 +724,13 @@ class PtzAutoTracker:
if camera_config.onvif.autotracking.movement_weights if camera_config.onvif.autotracking.movement_weights
else obj.obj_data["box"], else obj.obj_data["box"],
): ):
# if we want to zoom out less, this could be -(1 - zoom)
zoom = -zoom zoom = -zoom
return zoom return zoom
def _lost_object_zoom(self, camera, obj): def _lost_object_zoom(self, camera, obj):
# absolutely zoom if we've lost an object and are waiting for return to preset
camera_config = self.config.cameras[camera] camera_config = self.config.cameras[camera]
if camera_config.onvif.autotracking.zooming != ZoomingModeEnum.disabled: if camera_config.onvif.autotracking.zooming != ZoomingModeEnum.disabled:
if not self._should_zoom_in( if not self._should_zoom_in(
@ -771,7 +790,7 @@ class PtzAutoTracker:
and self.tracked_object_previous[camera] is not None and self.tracked_object_previous[camera] is not None
and obj.obj_data["id"] == self.tracked_object[camera].obj_data["id"] and obj.obj_data["id"] == self.tracked_object[camera].obj_data["id"]
and obj.obj_data["frame_time"] != self.previous_frame_time and obj.obj_data["frame_time"] != self.previous_frame_time
and obj.score_history[-1] != 0.0 and not all(x == 0.0 for x in obj.score_history[-3:])
): ):
if ( if (
self._below_distance_threshold(camera, obj) self._below_distance_threshold(camera, obj)