如何构建口罩检测系统：初学者实用指南

import cv2import osdef load_images_from_folder(folder):    images = []    for filename in os.listdir(folder):        img = cv2.imread(os.path.join(folder, filename))        if img is not None:            images.append(img)    return imagesmask_images = load_images_from_folder('data/mask')no_mask_images = load_images_from_folder('data/no_mask')

import cv2cap = cv2.VideoCapture(0)while True:    ret, frame = cap.read()    #  在此处添加人脸检测和口罩分类逻辑    cv2.imshow('口罩检测', frame)    if cv2.waitKey(1) & 0xFF == ord('q'):        breakcap.release()cv2.destroyAllWindows()