AI 中文总结
该研究针对公共3D虚拟试穿系统的交互疲劳与社交尴尬问题，提出整合无标记动作捕捉与动态逼真度控制的系统，揭示了交互模态与化身逼真度的平衡规律，构建了情境感知逼真度框架。
AI 中文摘要
部署在大型公共显示屏上的虚拟试穿（VTON）系统面临双重障碍：空中交互带来的身体疲劳，以及公众自我意识引发的社交抑制。本文提出一种实时三维化身系统，整合无标记动作捕捉与动态视觉逼真度控制，以探究并缓解这两种障碍。通过双研究实证评估，我们首先将身体疲劳与手势交互分离（N=20），证明交互疲劳主要由视觉运动延迟驱动，而非手势的物理动作；我们优化的低延迟手势管道实现了与触摸屏相当的可用性，同时提供更出色的沉浸感与卫生性。基于这些见解，第二项研究（N=25）采用2×2因子设计，探究“化身逼真度悖论”，操控交互模态（手势 vs. 触摸）与视觉逼真度（超写实MetaHuman vs. 风格化人体模型）。结果显示，高逼真度与空中手势虽各自最大化虚拟具身性（p <.05），但二者结合会引发最高的社交尴尬。关键在于，低逼真度化身充当“心理面具”，缓解做出表现力手势时的公众尴尬，而空中手势同时作为补偿机制，即便视觉真实度降低，仍能维持感知到的试穿信任。最后，我们提出一种情境感知逼真度框架，以平衡公共空间交互中的隐私、沉浸感与商业信任。
英文摘要
Virtual Try-On (VTON) systems deployed on large public displays face a dual barrier: the physical strain of mid-air interaction and the social inhibition caused by public self-consciousness. This paper presents a real-time 3D avatar system integrating markerless motion capture with dynamic visual fidelity control to investigate and mitigate both barriers. Through a dual-study empirical evaluation, we first decoupled physical fatigue from gesture interaction ($N=20$), demonstrating that interaction fatigue is primarily driven by visuomotor latency rather than the physical act of gesturing; our optimized low-latency gesture pipeline achieved usability comparable to touchscreens while delivering superior immersion and hygiene. Building on these insights, our second study ($N=25$) investigated the "avatar fidelity paradox" via a $2 \times 2$ factorial design manipulating interaction modality (gestures vs. touch) and visual fidelity (photorealistic MetaHuman vs. stylized mannequin). Results reveal that while high fidelity and mid-air gestures independently maximize virtual embodiment ($p < .05$), their combination elicits the highest social awkwardness. Crucially, low-fidelity avatars serve as a "psychological mask" that alleviates public embarrassment during expressive gestures, while mid-air gestures simultaneously act as a compensatory mechanism to preserve perceived try-on trust despite reduced visual realism. Finally, we propose a context-aware fidelity framework to balance privacy, immersion, and commercial trust in public spatial interactions.
