The drone video sensing platform described in the previous articles makes the case to lean on analytics and agentic retrieval to use fewer images from aerial drone videos to save on cost and increase temporal and spatial awareness. Yet it does not exclude the notion that scaling of processing especially from many sources would require near real-time processing to scale to the size of a UAV swarm. Although the recommended approach for cloud computing is something like:
cap = cv2.VideoCapture(0)
while True:
ret, frame = cap.read()
if not ret:
break
if should_analyze(frame):
result = analyze(frame)
consume_result(result)
cap.release()
We could modify it to build a producer-consumer system with asynchronous processing of a blocking collection task queue as follows:
import cv2
import threading
import queue
import time
# Configuration
MAX_QUEUE_SIZE = 10
VIDEO_SOURCE = 0 # Use 0 for webcam or path to video file
NUM_CONSUMERS = 2
# Shared queue simulating I/O completion port
frame_queue = queue.Queue(maxsize=MAX_QUEUE_SIZE)
stop_event = threading.Event()
# Producer: reads frames from video source
def producer():
cap = cv2.VideoCapture(VIDEO_SOURCE)
while not stop_event.is_set():
ret, frame = cap.read()
if not ret:
break
try:
frame_queue.put(frame, timeout=1)
print("[Producer] Frame enqueued")
except queue.Full:
print("[Producer] Queue full, dropping frame")
cap.release()
stop_event.set()
print("[Producer] Stopped")
# Consumer: processes frames asynchronously
def consumer(consumer_id):
while not stop_event.is_set() or not frame_queue.empty():
try:
frame = frame_queue.get(timeout=1)
process_frame(frame, consumer_id)
frame_queue.task_done()
except queue.Empty:
continue
print(f"[Consumer-{consumer_id}] Stopped")
# Simulated frame processing
def process_frame(frame, consumer_id):
# Example: convert to grayscale and simulate delay
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
time.sleep(0.05) # Simulate processing time
print(f"[Consumer-{consumer_id}] Processed frame")
# Launch threads
producer_thread = threading.Thread(target=producer)
consumer_threads = [threading.Thread(target=consumer, args=(i,)) for i in range(NUM_CONSUMERS)]
producer_thread.start()
for t in consumer_threads:
t.start()
# Wait for completion
producer_thread.join()
for t in consumer_threads:
t.join()
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