You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.6 KiB
71 lines
1.6 KiB
# Ultralytics YOLO 🚀, AGPL-3.0 license |
|
|
|
from collections import OrderedDict |
|
|
|
import numpy as np |
|
|
|
|
|
class TrackState: |
|
"""Enumeration of possible object tracking states.""" |
|
|
|
New = 0 |
|
Tracked = 1 |
|
Lost = 2 |
|
Removed = 3 |
|
|
|
|
|
class BaseTrack: |
|
"""Base class for object tracking, handling basic track attributes and operations.""" |
|
|
|
_count = 0 |
|
|
|
track_id = 0 |
|
is_activated = False |
|
state = TrackState.New |
|
|
|
history = OrderedDict() |
|
features = [] |
|
curr_feature = None |
|
score = 0 |
|
start_frame = 0 |
|
frame_id = 0 |
|
time_since_update = 0 |
|
|
|
# Multi-camera |
|
location = (np.inf, np.inf) |
|
|
|
@property |
|
def end_frame(self): |
|
"""Return the last frame ID of the track.""" |
|
return self.frame_id |
|
|
|
@staticmethod |
|
def next_id(): |
|
"""Increment and return the global track ID counter.""" |
|
BaseTrack._count += 1 |
|
return BaseTrack._count |
|
|
|
def activate(self, *args): |
|
"""Activate the track with the provided arguments.""" |
|
raise NotImplementedError |
|
|
|
def predict(self): |
|
"""Predict the next state of the track.""" |
|
raise NotImplementedError |
|
|
|
def update(self, *args, **kwargs): |
|
"""Update the track with new observations.""" |
|
raise NotImplementedError |
|
|
|
def mark_lost(self): |
|
"""Mark the track as lost.""" |
|
self.state = TrackState.Lost |
|
|
|
def mark_removed(self): |
|
"""Mark the track as removed.""" |
|
self.state = TrackState.Removed |
|
|
|
@staticmethod |
|
def reset_id(): |
|
"""Reset the global track ID counter.""" |
|
BaseTrack._count = 0
|
|
|