如何让UITableViewCell自动读出UIImageView，就像在UILabel上使用语音功能一样

import UIKit
import AVFoundation

class MyTableViewController: UITableViewController {
    let speechSynthesizer = AVSpeechSynthesizer()

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "MyCell", for: indexPath) as! MyTableViewCell
        
        // 添加手势识别器
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(imageTapped(_:)))
        cell.myImageView.addGestureRecognizer(tapGesture)
        cell.myImageView.isUserInteractionEnabled = true
        
        return cell
    }
    
    @objc func imageTapped(_ gesture: UITapGestureRecognizer) {
        guard let imageView = gesture.view as? UIImageView else {
            return
        }
        
        // 将图片转换为文本
        let imageText = "这是一张图片"
        
        // 实现语音合成
        let speechUtterance = AVSpeechUtterance(string: imageText)
        speechSynthesizer.speak(speechUtterance)
    }
}

class MyTableViewCell: UITableViewCell {
    @IBOutlet weak var myImageView: UIImageView!
}