Comparison of Blind Source Separation Techniques for Respiration Rate Estimation from Depth Video

Mozafari, Mohsen; Law, Andrew; Djouaka, Samuel Beni Tchoudem; Green, James R.; Goubran, Rafik

doi:10.1109/i2mtc48687.2022.9806591

Cited by 4 publications

(3 citation statements)

References 20 publications

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“…However, such a manual approach lacks the capability to dynamically adapt the ROI in real time and requires the offline manual analysis. To address these limitations, the 3D image is segmented into voxels of 40 × 40 pixels, as illustrated in Figure 5a [17,32]. Each voxel is assigned a score distinguishing between areas within the ROI and excluded regions.…”

Section: Step 1: Preprocessingmentioning

confidence: 99%

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Human Respiration Rate Measurement with High-Speed Digital Fringe Projection Technique

Lorenz,

Zhang

2023

Sensors

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This paper proposes a non-contact continuous respiration monitoring method based on Fringe Projection Profilometry (FPP). This method aims to overcome the limitations of traditional intrusive techniques by providing continuous monitoring without interfering with normal breathing. The FPP sensor captures three-dimensional (3D) respiratory motion from the chest wall and abdomen, and the analysis algorithms extract respiratory parameters. The system achieved a high Signal-to-Noise Ratio (SNR) of 37 dB with an ideal sinusoidal respiration signal. Experimental results demonstrated that a mean correlation of 0.95 and a mean Root-Mean-Square Error (RMSE) of 0.11 breaths per minute (bpm) were achieved when comparing to a reference signal obtained from a spirometer.

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Section: Step 1: Preprocessingmentioning

confidence: 99%

“…In many studies, the selection of the ROI was manually conducted [20,23,[29][30][31]. However, a recent study [32] focused on the automated selection of the ROI. This process involved dividing each depth frame into sub-regions, averaging the depth in each region, and then applying blind-source separation to each time signal.…”

Section: Introductionmentioning

confidence: 99%

Human Respiration Rate Measurement with High-Speed Digital Fringe Projection Technique

Lorenz,

Zhang

2023

Sensors

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“…As part of the collaboration with the National Research Council's Aerospace Research team under the Aerospace Portfolio through the Pandemic Response Challenge program, NRC has setup and run an experiment collecting videos of 22 subjects under 14 different conditions. This was done as part of NRC's Multi-Modal Contactless Vital Sign Assessment Solution for potential use at airports [10], [11], [52]- [54] that had an ethics protocol with REB # 2020-150 [54] .…”

Section: Video Capture Methods From the National Research Council Col...mentioning

confidence: 99%

Heart Rate Detection using Video Magnification: Impact of Algorithmic Parameters and Noise

Kassab¹

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Screening people for illnesses in public spaces using contactless techniques such as Video Magnification (VM) can be beneficial for both the crowd and the operators. One important vital sign to screen for is heart rate because it is indicative of the overall health of humans. In this thesis, first the impact of varying two input parameters (region of interest (ROI) size and window segment length) on VM is explored. Second, the impact of noise from three different sources (quantization, modern camera systems coupled with software enhancements, and light illumination) is explored.Results show that heart rate can be detected from very small ROIs, but that larger ROIs have higher accuracy. Larger window segment lengths are useful in the presence of motion. VM detects signals with amplitudes equal to one quantization level in 8-bit videos. VM is affected by modern camera systems, and it is more accurate with higher light illuminations.

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Face Detection in Thermal Images with Improved Spatial Precision and Temporal Stability

Mozafari

Law

Green

et al. 2023

2023 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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Comparison of Blind Source Separation Techniques for Respiration Rate Estimation from Depth Video

Cited by 4 publications

References 20 publications

Human Respiration Rate Measurement with High-Speed Digital Fringe Projection Technique

Human Respiration Rate Measurement with High-Speed Digital Fringe Projection Technique

Heart Rate Detection using Video Magnification: Impact of Algorithmic Parameters and Noise

Face Detection in Thermal Images with Improved Spatial Precision and Temporal Stability

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