如何有效地级联CIFilters

import UIKit
import CoreImage

func applyFilters(to image: UIImage) -> UIImage? {
    guard let ciImage = CIImage(image: image) else { return nil }
    
    // 创建第一个滤镜：高斯模糊
    let blurFilter = CIFilter(name: "CIGaussianBlur")
    blurFilter?.setValue(ciImage, forKey: kCIInputImageKey)
    blurFilter?.setValue(10.0, forKey: kCIInputRadiusKey)
    
    // 获取第一个滤镜的输出图像
    guard let blurredImage = blurFilter?.outputImage else { return nil }
    
    // 创建第二个滤镜：颜色调整
    let colorControlsFilter = CIFilter(name: "CIColorControls")
    colorControlsFilter?.setValue(blurredImage, forKey: kCIInputImageKey)
    colorControlsFilter?.setValue(1.5, forKey: kCIInputSaturationKey)
    
    // 获取最终处理后的图像
    guard let finalImage = colorControlsFilter?.outputImage else { return nil }
    
    // 将CIImage转换为UIImage
    let context = CIContext(options: nil)
    guard let cgImage = context.createCGImage(finalImage, from: finalImage.extent) else { return nil }
    return UIImage(cgImage: cgImage)
}

// 使用示例
if let originalImage = UIImage(named: "example.jpg"),
   let filteredImage = applyFilters(to: originalImage) {
    // 显示或保存处理后的图像
    imageView.image = filteredImage
}