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arXiv 2312.11972cs.CV

3D 全身人体运动的表现力预测

Expressive Forecasting of 3D Whole-body Human Motions

MiLAB, Westlake University(西湖大学 MiLAB);Zhejiang University(浙江大学);Nanjing University of Science and Technology(南京理工大学);Shenzhen Graduate School, Peking University(北京大学深圳研究生院);Xiaohongshu Inc.(小红书公司)

Pengxiang Ding, Qiongjie Cui, Min Zhang, Mengyuan Liu, Haofan Wang, Donglin Wang

AI总结:

本文首次定义全身人体姿态预测任务,并提出 EAI 框架,通过 XCA 对齐身体与手部特征、XCI 建模跨部位交互,在新基准上实现 SOTA。

摘要:

人体运动预测旨在估计一段时间内的未来人体行为,是许多实际应用中的一项基础任务。然而,现有工作通常集中于预测人体的主要关节,而没有考虑人手的精细运动。在实际应用中,手势在人类与现实世界的交流中发挥着重要作用,并表达人类的主要意图。在本工作中,我们首次构建了全身人体姿态预测任务,联合预测未来的身体和手部活动。相应地,我们提出了一种新颖的编码-对齐-交互(Encoding-Alignment-Interaction,EAI)框架,旨在协同预测粗粒度(身体关节)和细粒度(手势)活动,从而实现具有表现力且相互促进的 3D 全身人体运动预测。具体而言,我们的模型包含两个关键组成部分:跨上下文对齐(cross-context alignment,XCA)和跨上下文交互(cross-context interaction,XCI)。考虑到全身内部的异构信息,XCA 旨在对齐不同人体组成部分的潜在特征,而 XCI 专注于有效捕捉人体组成部分之间的上下文交互。我们在一个新引入的大规模基准上进行了大量实验,并取得了最先进的性能。用于研究目的的代码已公开,地址为 https://github.com/Dingpx/EAI。

英文摘要:

Human motion forecasting, with the goal of estimating future human behavior over a period of time, is a fundamental task in many real-world applications. However, existing works typically concentrate on predicting the major joints of the human body without considering the delicate movements of the human hands. In practical applications, hand gesture plays an important role in human communication with the real world, and expresses the primary intention of human beings. In this work, we are the first to formulate a whole-body human pose forecasting task, which jointly predicts the future body and hand activities. Correspondingly, we propose a novel Encoding-Alignment-Interaction (EAI) framework that aims to predict both coarse (body joints) and fine-grained (gestures) activities collaboratively, enabling expressive and cross-facilitated forecasting of 3D whole-body human motions. Specifically, our model involves two key constituents: cross-context alignment (XCA) and cross-context interaction (XCI). Considering the heterogeneous information within the whole-body, XCA aims to align the latent features of various human components, while XCI focuses on effectively capturing the context interaction among the human components. We conduct extensive experiments on a newly-introduced large-scale benchmark and achieve state-of-the-art performance. The code is public for research purposes at https://github.com/Dingpx/EAI.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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