How to set up telegram so that it responds to certain images?

Question

Python

There is a telegram bot that responds to messages to users, now there is a need to respond to certain images sent by the user.
I suppose that the chat bot sent by the user should save the image in the database, if the next time the user sends the same image, the bot is looking for matches in the database, if there are any, then the bot somehow answers the user.

please help me with the implementation, I don’t quite understand how to do it
Example:

import telebot

bot = telebot.TeleBot('BOT TOKEN')

dnr1 = "hello"
dnr2 = "hello"
dnr3 = "hello"

@bot.message_handler(content_types=['text '])
def handle_text(message):
if message.text.casefold() == dnr1 or message.text.casefold() == dnr2 or message.text.casefold() == dnr3:
bot.send_message(message.chat.id, f'Hi, {message .from_user.first_name}!')