智能识别双十二优惠活动

import cv2
import numpy as np

# 加载预训练的优惠券检测模型
coupon_cascade = cv2.CascadeClassifier('coupon_cascade.xml')

# 打开摄像头
cap = cv2.VideoCapture(0)

while True:
    ret, frame = cap.read()
    if not ret:
        break

    # 转换为灰度图像
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    # 检测优惠券
    coupons = coupon_cascade.detectMultiScale(gray, scaleFactor=1.1, minNeighbors=5)

    # 绘制矩形框标记优惠券位置
    for (x, y, w, h) in coupons:
        cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 255, 0), 2)

    # 显示结果
    cv2.imshow('Coupon Detection', frame)

    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()