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check for valid velocity when zooming

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This commit is contained in:
Josh Hawkins 2023-10-01 21:53:45 -05:00
parent dbae51ca9a
commit e8f00b71f2
1 changed files with 8 additions and 5 deletions
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13
frigate/ptz/autotrack.py
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@ -533,6 +533,8 @@ class PtzAutoTracker:
(x1 + x2) / 2, (x1 + x2) / 2,
(y1 + y2) / 2, (y1 + y2) / 2,
) )
# get euclidean distance of the two points, sometimes the estimate is way off
distance = np.linalg.norm([x2 - x1, y2 - y1])
bb_left, bb_top, bb_right, bb_bottom = box bb_left, bb_top, bb_right, bb_bottom = box
@ -556,10 +558,11 @@ class PtzAutoTracker:
# if we have a fast moving object, let's zoom out # if we have a fast moving object, let's zoom out
# 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 = abs(average_velocity[0]) * camera_fps < ( below_velocity_threshold = (
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
) )
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}")
@ -574,7 +577,7 @@ 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}, threshold value: {camera_width * velocity_threshold}" 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}"
) )
# returns True to zoom in, False to zoom out # returns True to zoom in, False to zoom out