HRUNet:评估从面部视频中测量的心率的不确定性
IEEE journal of biomedical and health informatics
|February 12, 2024
概括
这项研究介绍了HRUNet,HRUNet是一个可靠的心率测量框架,可以从面部视频中使用基于视频的光电显微镜 (VPPG) 来测量心率. HRUNet量化了不确定性,在扰乱条件下提高了准确性.
科学领域:
- 生物医学工程 生物医学工程
- 计算机视觉 计算机视觉
- 信号处理 信号处理
背景情况:
- 基于视频的光电脉冲图 (VPPG) 可以从面部视频中估计心率 (HR).
- 由VPPG衍生的HR的可靠性受到视频干扰的影响,导致不确定性.
研究的目的:
- 开发基于VPPG的HR测量的创新框架,以捕捉和量化不确定性.
- 在潜在的安全关键应用中提高VPPG的可靠性.
主要方法:
- 开发了一个神经网络HRUNet,用于从面部视频中提取HR.
- 贝叶斯后置估计被用来推导权重分布,使不确定性编码.
- HRUNet输出了潜在HR值的分布,反映了固有的视频噪声和模型不确定性.
主要成果:
- HRUNet对1098个视频进行了评估,包括未受干扰的场景,运动干扰的场景和光干扰的场景.
- 与未受到干扰的场景相比,在受干扰的场景中,测量不确定性显著增加.
- 除了0.4不确定性的HR值外,HRUNet在HR准确性方面超过了最先进的方法.
结论:
- 不确定性量化是VPPG中潜在错误的HR测量的关键指标.
- HRUNet框架通过识别和管理测量不确定性来提高VPPG的可靠性.
- 这种方法为VPPG在安全关键领域的应用铺平了道路.
更多相关视频
08:12Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
19.9K
07:12Protocol for Data Collection and Analysis Applied to Automated Facial Expression Analysis Technology and Temporal Analysis for Sensory Evaluation
Published on: August 26, 2016
9.4K
相关概念视频
Facial Feedback Hypothesis
408
Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
408
Factors Influencing Heart Rate
5.7K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
5.7K
