论文标题
通过局部远程光摄影学（RPPG）进行灌注评估
Perfusion assessment via local remote photoplethysmography (rPPG)
论文作者
论文摘要
本文提出了一种评估RGB视频文件中可见人体组织灌注的方法。我们提出源自远程光摄影（RPPG）信号的指标，以检测组织是否充分供应血液。灌注分析以三种不同的尺度进行，为不同的应用提供了灵活的方法。我们对每个尺度上的局部定义区域独立地执行平面 - 正交到皮肤的RPPG。从提取的信号中，我们得出了信噪比，频域中的大小，心率，灌注指数以及特定RPPG信号之间的相关性，以便在局部评估人类组织特定区域的灌注。我们表明，本地解决的RPPG具有广泛的应用。作为示例性应用，我们介绍了术中术中灌注分析和可视化皮肤和器官移植期间的可视化，以及对检测表现攻击在身份验证系统中检测的生计评估的应用。
This paper presents an approach to assess the perfusion of visible human tissue from RGB video files. We propose metrics derived from remote photoplethysmography (rPPG) signals to detect whether a tissue is adequately supplied with blood. The perfusion analysis is done in three different scales, offering a flexible approach for different applications. We perform a plane-orthogonal-to-skin rPPG independently for locally defined regions of interest on each scale. From the extracted signals, we derive the signal-to-noise ratio, magnitude in the frequency domain, heart rate, perfusion index as well as correlation between specific rPPG signals in order to locally assess the perfusion of a specific region of human tissue. We show that locally resolved rPPG has a broad range of applications. As exemplary applications, we present results in intraoperative perfusion analysis and visualization during skin and organ transplantation as well as an application for liveliness assessment for the detection of presentation attacks to authentication systems.
