如何使用OpenCV生成类似纸张的背景

import cv2
import numpy as np

width = 800  # 背景图像的宽度
height = 600  # 背景图像的高度
background = np.zeros((height, width, 3), dtype=np.uint8)

# 生成噪声图像
noise = np.random.randint(0, 256, (height, width, 3), dtype=np.uint8)

# 对噪声图像进行高斯模糊
blurred = cv2.GaussianBlur(noise, (25, 25), 0)

# 将模糊后的图像与背景图像进行叠加
paper_texture = cv2.addWeighted(background, 0.7, blurred, 0.3, 0)

cv2.imshow("Paper Background", paper_texture)
cv2.waitKey(0)
cv2.destroyAllWindows()