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.

在过去的三年中，我们的研究成果如下。面部表情分析与合成系统的基本设计。首先，研究了该系统的体系结构。其次，在图形工作站上实现了开发系统所需的图像处理软件和计算机图形学软件。然后，这位首席研究员和他的同事开发了基于知识的LMASE编码中系统描述脸部病症和面部表情的方法。从而验证了基于知识的词组编码方法的优势。开发了人脸表情图像分析应用软件，开发了基于表情的头部概念检测和形状参数提取软件。面部表情图像合成应用软件的开发。为了仅根据与表情有关的形状参数来合成自然的面部表情图像，从心理学的角度研究了系统中人脸模型的变形方法，使其能够模拟真实的面部动作。在此基础上，构建了基于FACS的人脸表情图像合成规则。心理测评通过心理学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人脸表情图像分析与合成系统的有效性。对我校心理学和行为科学研究体系的应用情况进行了考察，并对心理学和行为科学中关于面部表情和非言语交际的重要研究进行了综述。并考察了我们的发展战略在这些研究领域中的作用。

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.