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This commit is contained in:
Nicolas Mowen 2024-02-24 06:22:28 -07:00
parent ce36fd16af
commit f61b06fd61
1 changed files with 10 additions and 11 deletions
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21
frigate/track/norfair_tracker.py
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@ -22,7 +22,7 @@ logger = logging.getLogger(__name__)
THRESHOLD_STATIONARY_IOU_AVERAGE = 0.6
MAX_STATIONARY_IOU_HISTORY = 10
MAX_STATIONARY_HISTORY = 10
# Normalizes distance from estimate relative to object size
@ -78,7 +78,7 @@ class NorfairTracker(ObjectTracker):
self.untracked_object_boxes: list[list[int]] = []
self.disappeared = {}
self.positions = {}
self.stationary_iou: dict[str, list[int]] = {}
self.stationary_box_history: dict[str, list[list[int, int, int, int]]] = {}
self.camera_config = config
self.detect_config = config.detect
self.ptz_metrics = ptz_metrics
@ -144,7 +144,7 @@ class NorfairTracker(ObjectTracker):
# tracks the current position of the object based on the last N bounding boxes
# returns False if the object has moved outside its previous position
def update_position(self, id: str, box: [int, int, int, int]):
def update_position(self, id: str, box: list[int, int, int, int]):
position = self.positions[id]
position_box = (
position["xmin"],
@ -153,19 +153,18 @@ class NorfairTracker(ObjectTracker):
position["ymax"],
)
xmin, ymin, xmax, ymax = box
self.stationary_box_history[id].append(box)
iou = intersection_over_union(position_box, box)
self.stationary_iou[id].append(iou)
if len(self.stationary_iou[id]) > MAX_STATIONARY_IOU_HISTORY:
self.stationary_iou[id] = self.stationary_iou[id][
-MAX_STATIONARY_IOU_HISTORY:
if len(self.stationary_box_history[id]) > MAX_STATIONARY_HISTORY:
self.stationary_box_history[id] = self.stationary_box_history[id][
-MAX_STATIONARY_HISTORY:
]
# TODO calculate mean of boxes
avg_iou = np.mean(self.stationary_iou[id])
xmin, ymin, xmax, ymax = box
# if the iou drops below the threshold
# assume the object has moved to a new position and reset the computed box
if avg_iou < THRESHOLD_STATIONARY_IOU_AVERAGE: