import cv2

# 读取图像（灰度）
image = cv2.imread('qrcode-A1.jpg', 0)

# 设置阈值
threshold_value = 100

# 进行二值化处理
_, binary_image = cv2.threshold(image, threshold_value, 255, cv2.THRESH_BINARY)

# 保存结果
cv2.imwrite('binary_qrcode-A1.jpg', binary_image)