func detect(ciimage:CIImage) {
    let imageOptions =  NSDictionary(object: NSNumber(value: 5) as NSNumber, forKey: CIDetectorImageOrientation as NSString)
    let personciImage = ciimage
    let accuracy = [CIDetectorAccuracy: CIDetectorAccuracyHigh]
    let faceDetector = CIDetector(ofType: CIDetectorTypeFace, context: nil, options: accuracy)
    let faces = faceDetector?.features(in: personciImage, options: imageOptions as? [String : AnyObject])

    //success
    if let face = faces?.first as? CIFaceFeature {


        hasFace = true

        // face.leftEyeClosed not work,It always outputs false
        if face.leftEyeClosed {
            lefteyeclosed = true
        }else{
            lefteyeclosed = false
        }

        // face.leftEyeClosed not work
        if face.rightEyeClosed{
            lefteyeclosed = true
        }else{
            lefteyeclosed = false
        }
    } else {
        hasFace = false
    }
}