如何在Tkinter中覆盖图像

import tkinter as tk
from PIL import Image, ImageTk

def load_image(path):
    image = Image.open(path)
    return ImageTk.PhotoImage(image)

def update_image(canvas, new_image_path):
    new_image = load_image(new_image_path)
    canvas.itemconfig(image_item, image=new_image)
    canvas.image = new_image  # Keep a reference to avoid garbage collection

# 创建主窗口
root = tk.Tk()
root.title("Image Overlay Example")

# 创建Canvas
canvas = tk.Canvas(root, width=400, height=300)
canvas.pack()

# 加载并显示初始图像
initial_image_path = "path_to_initial_image.jpg"
initial_image = load_image(initial_image_path)
image_item = canvas.create_image(200, 150, image=initial_image)

# 更新图像以覆盖初始图像
new_image_path = "path_to_new_image.jpg"
update_image(canvas, new_image_path)

# 运行主循环
root.mainloop()