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change exponent

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This commit is contained in:
Josh Hawkins 2023-10-03 08:05:44 -05:00
parent 4fa9f35b0a
commit 9aa7c2e28b
1 changed files with 12 additions and 3 deletions
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15
frigate/ptz/autotrack.py
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@ -693,6 +693,10 @@ class PtzAutoTracker:
def _get_zoom_amount(self, camera, obj, predicted_box): def _get_zoom_amount(self, camera, obj, predicted_box):
camera_config = self.config.cameras[camera] camera_config = self.config.cameras[camera]
# frame width and height
camera_width = camera_config.frame_shape[1]
camera_height = camera_config.frame_shape[0]
zoom = 0 zoom = 0
# absolute zooming separately from pan/tilt # absolute zooming separately from pan/tilt
@ -712,8 +716,10 @@ class PtzAutoTracker:
# 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 (
"area" in obj.previous abs(
and abs(obj.obj_data["area"] - obj.previous["area"]) obj.obj_data["area"]
- self.tracked_object_previous[camera].obj_data["area"]
)
/ obj.obj_data["area"] / obj.obj_data["area"]
< 0.3 < 0.3
and zoom <= zoom_level and zoom <= zoom_level
@ -726,7 +732,8 @@ class PtzAutoTracker:
if self.tracked_object_previous[camera] is None: if self.tracked_object_previous[camera] is None:
zoom = 0 zoom = 0
else: else:
zoom = zoom * (1 / self.zoom_factor[camera]) ** 1.5 zoom_level = obj.obj_data["area"] / (camera_width * camera_height)
zoom = min(1, zoom_level * (1 / self.zoom_factor[camera]) ** 1.2)
# test if we need to zoom out # test if we need to zoom out
if not self._should_zoom_in( if not self._should_zoom_in(
@ -738,6 +745,8 @@ class PtzAutoTracker:
): ):
zoom = -zoom zoom = -zoom
logger.debug(f"Zoom amount: {zoom}")
return zoom return zoom
def _lost_object_zoom(self, camera, obj): def _lost_object_zoom(self, camera, obj):