如何在python中将高斯噪声添加到tif图像文件中？

import cv2
import numpy as np

def add_gaussian_noise(image_path, output_path, mean, std_dev):
    # 读取TIF图像文件
    image = cv2.imread(image_path, cv2.IMREAD_GRAYSCALE)

    # 生成与图像大小相同的高斯噪声
    noise = np.random.normal(mean, std_dev, image.shape)

    # 将高斯噪声添加到图像中
    noisy_image = image + noise

    # 将像素值限制在0-255范围内
    noisy_image = np.clip(noisy_image, 0, 255)

    # 将图像保存为TIF文件
    cv2.imwrite(output_path, noisy_image)

# 示例用法
image_path = "input.tif"
output_path = "output.tif"
mean = 0  # 噪声的均值
std_dev = 50  # 噪声的标准差

add_gaussian_noise(image_path, output_path, mean, std_dev)