model_watermark_verify/watermark_verify/tools/qrcode_tool.py

import cv2


def detect_and_decode_qr_code(img_path):
    """
    从指定图片检测和提取二维码
    :param img_path: 指定图片位置
    :return: （二维码信息，二维码位置）
    """
    image = cv2.imread(img_path)
    # Initialize the QRCode detector
    qr_code_detector = cv2.QRCodeDetector()

    # Detect and decode the QR code
    decoded_text, points, _ = qr_code_detector.detectAndDecode(image)

    if points is not None:
        # Convert to integer type
        points = points[0].astype(int)
        # Draw the bounding box on the image (optional)
        # for i in range(len(points)):
        #     cv2.line(image, tuple(points[i]), tuple(points[(i + 1) % len(points)]), (255, 0, 0), 2)
        return decoded_text, points
    else:
        return None, None