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velocity threshold based on move coefficients

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This commit is contained in:
Josh Hawkins 2023-10-02 14:42:45 -05:00
parent 66b5541472
commit b918ecdd35
1 changed files with 17 additions and 5 deletions
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22
frigate/ptz/autotrack.py
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@ -549,7 +549,20 @@ class PtzAutoTracker:
# #
# TODO: Take into account the area changing when an object is moving out of frame # TODO: Take into account the area changing when an object is moving out of frame
edge_threshold = 0.15 edge_threshold = 0.15
velocity_threshold = 0.1
# calculate a velocity threshold based on movement coefficients if available
if camera_config.onvif.autotracking.movement_weights:
predicted_movement_time = self._predict_movement_time(camera, 1, 1)
velocity_threshold_x = (
camera_width / predicted_movement_time / camera_fps * 0.7
)
velocity_threshold_y = (
camera_width / predicted_movement_time / camera_fps * 0.7
)
else:
# use a generic velocity threshold
velocity_threshold_x = camera_width * 0.02
velocity_threshold_y = camera_height * 0.02
far_from_edge = ( far_from_edge = (
bb_left > edge_threshold * camera_width bb_left > edge_threshold * camera_width
@ -570,9 +583,8 @@ class PtzAutoTracker:
# fast moving is defined as a velocity of more than 10% of the camera's width or height # fast moving is defined as a velocity of more than 10% of the camera's width or height
# so an object with an x velocity of 15 pixels per second on a 1280x720 camera would trigger a zoom out # so an object with an x velocity of 15 pixels per second on a 1280x720 camera would trigger a zoom out
below_velocity_threshold = ( below_velocity_threshold = (
abs(average_velocity[0]) * camera_fps < (camera_width * velocity_threshold) abs(average_velocity[0]) < velocity_threshold_x
and abs(average_velocity[1]) * camera_fps and abs(average_velocity[1]) < velocity_threshold_y
< (camera_height * velocity_threshold)
and distance <= 10 and distance <= 10
) )
@ -591,7 +603,7 @@ class PtzAutoTracker:
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]}"
) )
logger.debug( logger.debug(
f"Zoom test: below velocity threshold: {below_velocity_threshold} velocity x: {abs(average_velocity[0])* camera_fps}, x threshold: {camera_width * velocity_threshold}, velocity y: {abs(average_velocity[1])* camera_fps}, y threshold: {camera_height * velocity_threshold}" f"Zoom test: below velocity threshold: {below_velocity_threshold} velocity x: {abs(average_velocity[0])}, x threshold: {velocity_threshold_x}, velocity y: {abs(average_velocity[1])}, y threshold: {velocity_threshold_y}"
) )
# returns True to zoom in, False to zoom out # returns True to zoom in, False to zoom out