Development of a diagnostic and therapeutic supporting system for disorder of facial movement based on video- image analysis of facial expression

自1999年以来，我们开发了基于面部表情视频图像分析的面部运动障碍诊断和治疗支持系统，并于2003年完成了第一个版本。但是它是基于二维分析的，所以为了更准确的定量分析，我们改进了录像方法和分析软件，并开发了一个新的基于三维分析的系统，并在项目期间通过临床应用继续对系统进行评估和改进。一种新系统的开发和改进(1)研制了一种带有固定头部定位装置的双侧镜系统，以在视频屏幕上同时获取人脸的三种不同视角。检查了两面镜子的位置、角度和大小，面部与摄像机之间的距离，以及如何紧紧握住头部。(2)通过对PRO…的求解，编制了适用于三维分析的第二版软件三维分析在临床病例中提出的问题较多。(3)提出了一种用于三维分析以获得真实运动量的算法。(4)用20例健康受试者的数据验证了三维分析算法和新系统的准确性。对46例接受肉毒毒素治疗的面瘫患者进行了治疗前后各种面部表情的录像和面部运动的三维分析，并进行了临床应用和评价。结果进行了临床研究，并应用于治疗计划。通过与其他面部运动评价方法如柳原40点法、肌电图法、患者问卷调查和功能检查(眼拉眼程度、饮食从口腔渗漏等)的比较，探讨该系统的实用性。通过对4例面肌痉挛患者和10例面肌痉挛患者的面部运动分析，探讨了其在面肌痉挛和联动定量评估中的应用。较少

We had developed a diagnostic and therapeutic supporting system for disorder of facial movement based on video- image analysis of facial expression since 1999 and completed the 1st version in 2003. However it was based on two-dimensional analysis, so for the purpose of more accurate quantitative analysis we have improved the video- recording method and the software for analysis, and we developed a new system based on three-dimensional analysis and continued to evaluate and improve the system by clinical application during the term of project.1. Development and improvement of a new system(1) A bilateral mirror system with an immovable head positioning device was developed to acquire three different views of the face at the same time in the video screen. Position, angle, and size of both mirrors, distance between the face and a video-camera and how to hold the head tightly were examined. (2) The 2nd version software suitable for three-dimensional analysis was completed by solving the pro … More blems posed by three-dimensional analysis in clinical cases. (3) An algorism for three-dimensional analysis to obtain true amount of movement was developed. (4) Accuracy of an algorism for three-dimensional analysis and a new system were examined by the data obtained from 20 healthy subjects.2. Clinical application and evaluation of the systemVideo-recordings for various facial expressions before and after the treatment and three-dimensional analysis of facial movement were performed in 46 patients with facial palsy who underwent static or dynamic reconstruction and the botulinum toxin treatment. The results were investigated clinically and applied to therapeutic planning. Usefulness of the system was investigated by comparing the results with other evaluating methods for facial movement such as Yanagihara's 40 point method, electromyography, questionnaire to the patients, and functional examination(degree of lagophthalmos, leakage of diet from the mouth etc). Application to quantitative assessment for facial spasms and synkinesis were also examined by analysis of facial movement in 4 patients with facial spasms and 10 patients with synkinesis. Less