ArticleBiomedical optics express2016
Skin inhomogeneity as a source of error in remote PPG-imaging.
Article in Biomedical optics express, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
19 citing papers in PubMed, 1 synthesis or guideline pooled it.
- A Systematic Review of Wearable Sensors in Rett Syndrome-What Physiological Markers Are Informative for Monitoring Disease States?Sensors (Basel, Switzerland) · 2025Pooled it
- Evaluating Diversity in Open Photoplethysmography Datasets: Protocol for a Systematic Review.JMIR research protocols · 2025Article
- Source-Detector Geometry Analysis of Reflective PPG by Measurements and Simulations.IEEE open journal of engineering in medicine and biology · 2025Article
- Assessment of Heat Exposure and Health Outcomes in Rural Populations of Western Kenya by Using Wearable Devices: Observational Case Study.JMIR mHealth and uHealth · 2024Observational
- Perceptions of Wearable Health Tools Post the COVID-19 Emergency in Low-Income Latin Communities: Qualitative Study.JMIR mHealth and uHealth · 2024Article
- Generalized channel separation algorithms for accurate camera-based multi-wavelength PTT and BP estimation.Biomedical optics express · 2024Article
- Photoplethysmographic imaging and analysis of pulsatile pressure wave in palmar artery at 10 wavelengths.Journal of biomedical optics · 2022Article
- Rational selection of RGB channels for disease classification based on IPPG technology.Biomedical optics express · 2022Article
- Photoplethysmographic Imaging of Hemodynamics and Two-Dimensional Oximetry.Optics and spectroscopy · 2022Article
- Response To: Investigating sources of inaccuracy in wearable optical heart rate sensors.NPJ digital medicine · 2021Article
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- PulseCam: a camera-based, motion-robust and highly sensitive blood perfusion imaging modality.Scientific reports · 2020Article
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- A Broader Look: Camera-Based Vital Sign Estimation across the Spectrum.Yearbook of medical informatics · 2019Review
- Current progress of photoplethysmography and SPOBiomedical engineering letters · 2019Review
- Frame Registration for Motion Compensation in Imaging Photoplethysmography.Sensors (Basel, Switzerland) · 2018Article
- Article
- The value of polarization in camera-based photoplethysmography.Biomedical optics express · 2017Article
- Cardiovascular waveforms - can we extract more from routine signals?JRSM cardiovascular diseaseArticle
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Remote photoplethysmography (rPPG) imaging is an optical technique to remotely assess the local cutaneous microcirculation. Despite its potential for enabling health-related applications, the current understanding of the outcome images/maps remains incomplete. In this paper, we present a model and supporting experiments confirming the contribution of skin inhomogeneity to the morphology of PPG waveforms. Since rPPG imagers rely on the complex inner-product operator and may combine multiple wavelengths, the derived phase measurements reflect morphological heterogeneity of PPG signals to a larger extent than propagation-related phase differences. The influence of light penetration depth on PPG was observed and modeled on the green and red wavelengths at the hand region. We further show how our work contributes to understanding reproducibility issues in recent papers on pulse wave velocity (PWV) estimation.
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