let imageData = UIImagePNGRepresentation(self)
let inputImage = CoreImage.CIImage(data: imageData!)
let context =CIContext(options:nil)
let filter =CIFilter(name:"CISepiaTone")
filter!.setValue(inputImage, forKey:kCIInputImageKey)
filter!.setValue(0.8, forKey:"inputIntensity")
if letoutputImage = filter!.outputImage {
let outImage = context.createCGImage(outputImage, from: outputImage.extent)
ret urnUIImage(cgImage: outImage!)
}
