arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2302.01110cs.CV
收藏

DirectMHP:全角度多人头部姿态的直接二维估计

DirectMHP: Direct 2D Multi-Person Head Pose Estimation with Full-range Angles

Shanghai Jiao Tong University(上海交通大学);East China Normal University(华东师范大学)

Huayi Zhou, Fei Jiang, Hongtao Lu

摘要:

现有的头部姿态估计方法主要针对单个人的头部姿态估计,这限制了其在多人复杂场景中的应用。我们认为,这些单一的HPE方法对于多人头部姿态估计(MPHPE)是脆弱和低效的,因为它们依赖于单独训练的面部检测器,该检测器不能很好地推广到全视角,特别是对于具有不可见面部区域的头部。在本文中,我们专注于全范围的MPHPE问题,并提出了一个直接的端到端的简单基线命名为DirectMHP。由于缺乏适用于全范围MPHPE的数据集,我们首先通过从公共数据集AGORA和CMU Panoptic中提取用于头部检测和头部定向的地面真实标签来构建两个基准。他们是相当具有挑战性的有许多截断,闭塞,微小和不均匀的照明人类头部。然后,我们设计了一个新的端到端的可训练的一级网络架构,通过联合回归的位置和方向的多头解决MPHPE问题。具体地说,我们把姿态作为头部的一个辅助属性,并将其附加在传统的对象预测之后。这种灵活的设计可接受任意姿态表示,如欧拉角。然后,我们通过共享特征和利用适当的多重损失来联合优化这两个任务。通过这种方式,我们的方法可以隐含地受益于更多的环境,以提高HPE的准确性,同时保持头部检测性能。我们在公共基准上与最先进的单一HPE方法进行了全面比较,并在我们构建的MPHPE数据集上获得了出色的基线结果。数据集和代码发布在https://github.com/hnuzhy/DirectMHP。

英文摘要:

Existing head pose estimation (HPE) mainly focuses on single person with pre-detected frontal heads, which limits their applications in real complex scenarios with multi-persons. We argue that these single HPE methods are fragile and inefficient for Multi-Person Head Pose Estimation (MPHPE) since they rely on the separately trained face detector that cannot generalize well to full viewpoints, especially for heads with invisible face areas. In this paper, we focus on the full-range MPHPE problem, and propose a direct end-to-end simple baseline named DirectMHP. Due to the lack of datasets applicable to the full-range MPHPE, we firstly construct two benchmarks by extracting ground-truth labels for head detection and head orientation from public datasets AGORA and CMU Panoptic. They are rather challenging for having many truncated, occluded, tiny and unevenly illuminated human heads. Then, we design a novel end-to-end trainable one-stage network architecture by joint regressing locations and orientations of multi-head to address the MPHPE problem. Specifically, we regard pose as an auxiliary attribute of the head, and append it after the traditional object prediction. Arbitrary pose representation such as Euler angles is acceptable by this flexible design. Then, we jointly optimize these two tasks by sharing features and utilizing appropriate multiple losses. In this way, our method can implicitly benefit from more surroundings to improve HPE accuracy while maintaining head detection performance. We present comprehensive comparisons with state-of-the-art single HPE methods on public benchmarks, as well as superior baseline results on our constructed MPHPE datasets. Datasets and code are released in https://github.com/hnuzhy/DirectMHP.

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。

↑