如何在swift中从AVCaptureStillImageOutput创建CIImage？

import AVFoundation
import CoreImage

let captureSession = AVCaptureSession()

// 配置输入
guard let captureDevice = AVCaptureDevice.default(for: .video),
      let captureInput = try? AVCaptureDeviceInput(device: captureDevice) else {
    // 处理无法获取摄像头设备的情况
    return
}
captureSession.addInput(captureInput)

// 配置输出
let captureOutput = AVCaptureStillImageOutput()
if captureSession.canAddOutput(captureOutput) {
    captureSession.addOutput(captureOutput)
}
captureSession.startRunning()

captureOutput.captureStillImageAsynchronously(from: captureOutput.connection(with: .video)!) { (buffer, error) in
    guard let buffer = buffer,
          let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(buffer),
          let image = CIImage(data: imageData) else {
        // 处理捕获图像失败的情况
        return
    }
    
    // 在这里可以使用得到的CIImage进行后续处理或分析
    // ...
}