drawing函数

def drawing(frame_queue, detections_queue, fps_queue):
    random.seed(3)  # deterministic bbox colors
    video = set_saved_video(cap, args.out_filename, (video_width, video_height))
    while cap.isOpened():
        frame = frame_queue.get()
        detections = detections_queue.get()
        fps = fps_queue.get()
        detections_adjusted = []
        
        if frame is not None:
            for label, confidence, bbox in detections:
                bbox_adjusted = convert2original(frame, bbox)
                detections_adjusted.append((str(label), confidence, bbox_adjusted))
            image = darknet.draw_boxes(detections_adjusted, frame, class_colors)
            if not args.dont_show:
                cv2.imshow('Inference', image)
            if args.out_filename is not None:
                video.write(image)
            if cv2.waitKey(fps) == 27:
                break
    cap.release()
    video.release()
    cv2.destroyAllWindows()