从任意姿势的稀疏点位估算人体尺寸,无需A姿态扫描。
Pose-independent 3D Anthropometry from Sparse Data
- 用任意姿势的稀疏关键点生成无关姿势的特征
- 精度接近依赖密集几何数据的标准方法
- 适合无法保持A姿态的人群,如伤患或残障者
3D数字人体测量学旨在从3D扫描中估计人体尺寸。精确的身体测量在医疗、时尚、人机工程和娱乐行业中具有重要意义。传统测量协议要求受试者在静态A姿态下完成全身扫描,整个过程需保持不动且不呼吸,持续时间可达数分钟。然而,维持A姿态困难,影响扫描质量,进而降低依赖密集几何数据的方法的测量准确性。此外,该限制使无法维持A姿态的个体(如受伤或残疾者)无法进行数字人体测量。本文提出一种新方法,仅需任意姿势下的稀疏关键点即可获得人体测量数据。通过稀疏关键点构建姿态无关特征,并训练网络预测标准A姿态下的身体测量值。实验表明,本方法性能可与使用密集几何数据的标准方法相媲美,且能仅凭稀疏关键点实现任意姿势下的测量估计。最后,为弥补开源3D人体测量方法的不足,我们已将该方法发布于https://github.com/DavidBoja/pose-independent-anthropometry,供研究社区使用。
原文摘要 · Abstract (English)
3D digital anthropometry is the study of estimating human body measurements from 3D scans. Precise body measurements are important health indicators in the medical industry, and guiding factors in the fashion, ergonomic and entertainment industries. The measuring protocol consists of scanning the whole subject in the static A-pose, which is maintained without breathing or movement during the scanning process. However, the A-pose is not easy to maintain during the whole scanning process, which can last even up to a couple of minutes. This constraint affects the final quality of the scan, which in turn affects the accuracy of the estimated body measurements obtained from methods that rely on dense geometric data. Additionally, this constraint makes it impossible to develop a digital anthropometry method for subjects unable to assume the A-pose, such as those with injuries or disabilities. We propose a method that can obtain body measurements from sparse landmarks acquired in any pose. We make use of the sparse landmarks of the posed subject to create pose-independent features, and train a network to predict the body measurements as taken from the standard A-pose. We show that our method achieves comparable results to competing methods that use dense geometry in the standard A-pose, but has the capability of estimating the body measurements from any pose using sparse landmarks only. Finally, we address the lack of open-source 3D anthropometry methods by making our method available to the research community at https://github.com/DavidBoja/pose-independent-anthropometry.
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