mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-11-21 19:07:46 +01:00
84 lines
3.4 KiB
Python
84 lines
3.4 KiB
Python
import time
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import datetime
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import threading
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import cv2
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import numpy as np
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from . util import draw_box_with_label
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class ObjectCleaner(threading.Thread):
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def __init__(self, objects_parsed, detected_objects):
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threading.Thread.__init__(self)
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self._objects_parsed = objects_parsed
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self._detected_objects = detected_objects
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def run(self):
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while True:
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# wait a bit before checking for expired frames
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time.sleep(0.2)
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# expire the objects that are more than 1 second old
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now = datetime.datetime.now().timestamp()
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# look for the first object found within the last second
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# (newest objects are appended to the end)
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detected_objects = self._detected_objects.copy()
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num_to_delete = 0
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for obj in detected_objects:
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if now-obj['frame_time']<2:
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break
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num_to_delete += 1
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if num_to_delete > 0:
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del self._detected_objects[:num_to_delete]
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# notify that parsed objects were changed
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with self._objects_parsed:
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self._objects_parsed.notify_all()
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# Maintains the frame and object with the highest score
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class BestFrames(threading.Thread):
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def __init__(self, objects_parsed, recent_frames, detected_objects):
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threading.Thread.__init__(self)
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self.objects_parsed = objects_parsed
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self.recent_frames = recent_frames
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self.detected_objects = detected_objects
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self.best_objects = {}
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self.best_frames = {}
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def run(self):
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while True:
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# wait until objects have been parsed
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with self.objects_parsed:
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self.objects_parsed.wait()
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# make a copy of detected objects
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detected_objects = self.detected_objects.copy()
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for obj in detected_objects:
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if obj['name'] in self.best_objects:
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now = datetime.datetime.now().timestamp()
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# if the object is a higher score than the current best score
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# or the current object is more than 1 minute old, use the new object
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if obj['score'] > self.best_objects[obj['name']]['score'] or (now - self.best_objects[obj['name']]['frame_time']) > 60:
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self.best_objects[obj['name']] = obj
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else:
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self.best_objects[obj['name']] = obj
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# make a copy of the recent frames
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recent_frames = self.recent_frames.copy()
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for name, obj in self.best_objects.items():
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if obj['frame_time'] in recent_frames:
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best_frame = recent_frames[obj['frame_time']] #, np.zeros((720,1280,3), np.uint8))
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label = "{}: {}% {}".format(name,int(obj['score']*100),int(obj['area']))
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draw_box_with_label(best_frame, obj['xmin'], obj['ymin'],
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obj['xmax'], obj['ymax'], label)
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# print a timestamp
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time_to_show = datetime.datetime.fromtimestamp(obj['frame_time']).strftime("%m/%d/%Y %H:%M:%S")
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cv2.putText(best_frame, time_to_show, (10, 30), cv2.FONT_HERSHEY_SIMPLEX, fontScale=.8, color=(255, 255, 255), thickness=2)
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self.best_frames[name] = cv2.cvtColor(best_frame, cv2.COLOR_RGB2BGR) |