目的 设计一个通用、动态的虚拟数字人视线交互设计模型,建立用户与虚拟数字人之间的视线映射,为生成具有视线交互能力的虚拟数字人提供模型支持。方法 基于共同注意理论,归纳出虚拟数字人与用户两大交互主体间共同注意交互框架;通过眼动仪检测用户的视域,为虚拟数字人视线生成提供数据基础;从视线数据采集、数据处理、视线呈现三个维度构建视线交互设计模型,提出虚拟数字人头（颈）部和眼部交互摆动计算方法,最终在Unity软件中搭建虚拟数字人教学交互场景,设计实验并验证模型可用性。结果 学习者体验实验结果表明,具备视线交互能力的虚拟数字人教学交互拟社会和学习体验良好,该设计实践解决虚拟数字人对学习者视线感知和互动不足问题,使虚拟数字人具备视线交互能力。结论 研究结果为人智视线交互在信息传递、情感交流、任务协作等场景应用提供设计依据,可推动虚拟数字人设计制作发展,具有广泛学术意义和应用前景。
Abstract
The work aims to design a universal and dynamic model for virtual human gaze interaction, establish a gaze-mapping system between the user and the virtual human, and provide support for generating virtual digital humans capable of gaze interaction. Based on the theory of joint attention, a framework for mutual interaction between the virtual human and the user was established. Eye-tracking devices were utilized to measure the user's view field, thereby providing a data foundation for generating the virtual digital human's gaze. Further, a gaze interaction design model was developed across three dimensions of data collection, processing, and presentation of gaze, along with a proposed method for calculating the interactive movements of the virtual digital human's head (neck) and eyes. Ultimately, a virtual human teaching interaction scenario was constructed in Unity, experiments were designed, and the usability of the model was verified. Learner experience results demonstrated that virtual teaching agents with gaze interaction capabilities facilitated positive pseudosocial interactions and enhanced the learning experience. The design practice addressed the shortcomings in the virtual humans' perception and interaction with learners' gaze, thereby equipping them with the ability to engage in gaze interaction. The research findings offer a foundation for the design of human-intelligent gaze interaction applications in scenarios such as information transfer, emotional communication, and task collaboration, which can advance the design and production of virtual humans, and hold broad academic significance and promising application prospects.
关键词
虚拟数字人 /
共同注意 /
视线交互 /
眼动耦合 /
交互模型
Key words
virtual human /
joint attention /
gaze interaction /
eye movement coupling /
interaction model
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基金
福建省社会科学基金一般课题（FJ2024B180）
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