Development of the dynamic system of analyzing and synthezising images of facial expressions in terms of image processing and computer graphics techniques, and its application for human behavioral researches.

现将我们近三年来的研究成果列举如下。面部表情分析与合成系统的基本设计。首先，对系统的体系结构进行了检查。其次，在图形工作站中实现了系统开发所需的图像处理软件和计算机图形软件。在此基础上，提出了基于知识的面部表情编码方法对面部表情进行系统描述的方法。结果验证了基于知识的酶编码方法的优越性。面部表情图像分析应用软件的开发。开发了头部概念检测和形状参数提取软件。人脸表情图像合成应用软件的开发。为了仅根据面部表情的形状参数来合成面部表情的自然图像，从心理学的角度研究了该系统面部模型的变形方式，使其能够模拟真实的面部动作。基于FACS，构建了人脸表情图像合成的生成规则。心理评价通过心理实验对提取的面部表情参数和合成的面部表情图像进行评价。结果证实了我们开发的面部表情图像分析与合成系统的有效性。考察本系统在心理学和行为科学研究中的应用。综述了心理学和行为科学对面部表情和非语言交际的重要研究。我们的发展系统在这些研究领域所扮演的角色也得到了检验。

The achievements of our research during last three years are listed as followings.1. Basic design of the system of analyzing and synthesizing inases of facial expressions.In the first place, the architecture of the system was examined. Secondly, softwares including ones for image processing and computer graphics to be necessary for developing the system were implenented into the graphic work station. Then, the method of systematic descriptions of inases of face, and facial expressions in terns of knowledge-based lmase codins approach developed by this head investigator and his co-workers. As a result, the advantage of the knowledge-based inase coding approach was verified.2. Development of application softwares for analyzing iiiages of facial expressions.The software of detecting the head notion and extracting parameters of shape concerning expressions was developed.3. Development of application softwares for synthesizing images of facial expressions.To synthesize natural images of facial expressions only in terms of parameters of shape concerning expressions, the way of deforming a model of face of the system was examined from psychological point of view, so that it can simulate real facial actions. Consequently, based on FACS, the generation rules for synthesizing images of facial expressions were constructed.4. Psychological AssessmentExtracted facial parameters of expressions and synthesized images of facial expressions were assessed by the psychological experiments. As a result, the validity of our developmental system of analyzing and synthesizins images of facial expressions were confirmed.5. Examination of the application of our' system for the researches in Psychology and Behay ioral Science.Significant researches on facial expressions and nonverbal communication in Psychology and Behavioral Science were surveyed. And the role of our developmental svstell to take in those research areas was examined.