// MARK: - Remove filter from image
func removeFilterFromImage(image: UIImage) -> UIImage {
    // Convert UIImage to CIImage
    guard let ciInput = CIImage(image: image) else {
        return image
    }

// Create a neutral filter (e.g., identity filter)
let neutralFilter = CIFilter(name: "CISRGBToneCurveToLinear")

// Set the input image for the filter
neutralFilter?.setValue(ciInput, forKey: kCIInputImageKey)

// Get the output CIImage from the filter
guard let ciOutput = neutralFilter?.outputImage else {
    return image
}

// Create a CIContext
let ciContext = CIContext()

// Render the output CIImage as a CGImage
guard let cgImage = ciContext.createCGImage(ciOutput, from: ciOutput.extent) else {
    return image
}

// Create a new UIImage from the CGImage
let outputImage = UIImage(cgImage: cgImage)

return outputImage

}
这是我尝试过的，但似乎不起作用。从我读到的来源，这是不可能的，除非有一个反向过滤器，所以应该有反向过滤器的每一个过滤器在这种情况下，如果没有，那么我如何才能删除现有的过滤器从图像例如：高斯模糊