/// <summary>
        /// 延迟处理面部结果
        /// </summary>
        private IEnumerator DelayHandleFace(Texture2D faceTex)
        {
            yield return(new WaitForSeconds(4));

            if (_face != null)
            {
                _webCam?.Close();

                _fsmSystem?.SetTransition((int)UIFaceRecTransition.Analyze, _face, faceTex);
            }
            else
            {
                _fsmSystem?.SetTransition((int)UIFaceRecTransition.Default);
            }
        }