Albertus C. den Brinker
Philips
PhotoplethysmogramLinear predictionBenchmark (computing)Speech codingSignature (logic)Artificial intelligencePhysical therapyEmergency medicineCOPDExacerbationSpeech recognitionCough FrequencyPulmonary diseaseIn patientComputer visionComputer scienceNear-infrared spectroscopyMedicineRGB color model
31Publications
13H-index
594Citations
Publications 32
Newest
#1Wenjin WangH-Index: 14
#2Albertus C. den Brinker (Philips)H-Index: 13
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#1Albertus C. den Brinker (Philips)H-Index: 13
#2Wenjin WangH-Index: 14
Source
#1Michael G. Crooks (Hull York Medical School)H-Index: 13
#2Albertus C. den Brinker (Philips)H-Index: 13
Last. Alyn H. Morice (Hull York Medical School)H-Index: 42
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INTRODUCTION Acute exacerbations of COPD (AE-COPD) are a leading cause of health service utilisation and are associated with morbidity and mortality. Identifying the prodrome of AE-COPD by monitoring symptoms and physiological parameters (telemonitoring) has proven disappointing and false alerts limit clinical utility. We report objective monitoring of cough counts around AE-COPD and the performance of a novel alert system identifying meaningful change in cough frequency. METHODS This prospectiv...
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#1Gabriele SpinaH-Index: 7
#2Pierluigi CasaleH-Index: 9
Last. Albertus C. den Brinker (Philips)H-Index: 13
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Abstract Nighttime symptoms are important indicators of impairment for many diseases and particularly for respiratory diseases such as chronic obstructive pulmonary disease (COPD). The use of wearable sensors to assess sleep in COPD has mainly been limited to the monitoring of limb motions or the duration and continuity of sleep. In this paper we present an approach to concisely describe sleep patterns in subjects with and without COPD. The methodology converts multimodal sleep data into a text ...
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#1Albertus C. den Brinker (Philips)H-Index: 13
An algorithm is proposed for stable determination of the normalized discrete Chebyshev polynomials. This is achieved by adaptively restricting the range over which the recurrence relation or difference equation is applied. The adaptation of the range is controlled by a factor indicating how much the normalized basis functions are allowed to deviate from unit norm.
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Introduction: Acute exacerbations of COPD (AECOPD) often lead to health service utilisation and have associated morbidity and mortality. Telemonitoring is proposed to facilitate early treatment by identifying and alerting clinicians to deterioration; but existing strategies have proven disappointing. Cough commonly increases at the time of AECOPD. We have previously described a system to monitor cough trends over time. Aim: To assess cough count around AE-COPD and develop a system to alert clini...
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#1Wenjin Wang (Philips)H-Index: 14
#2Luc Vosters (Philips)H-Index: 1
Last. Albertus C. den Brinker (Philips)H-Index: 13
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Many camera-based remote photoplethysmography (PPG) applications require sensing in near infrared (NIR). The performance of PPG systems benefits from multi-wavelength processing. The illumination source in such system is explored in this paper. We demonstrate that multiple narrow-band LEDs have inferior color homogeneity compared to broadband light sources. Therefore, we consider the broadband option based on phosphor material excited by LEDs. A first prototype was realized and its details are d...
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#1Wenjin Wang (Philips)H-Index: 14
#2Albertus C. den Brinker (Philips)H-Index: 13
Last. Gerard De Haan (Philips)H-Index: 21
view all 3 authors...
Near-infrared (NIR) remote photoplethysmography (PPG) promises attractive applications in darkness, as it involves unobtrusive, invisible light. However, since the PPG strength (AC/DC) is much lower in the NIR spectrum than in the RGB spectrum, robust vital signs monitoring is more challenging. In this paper, we propose a new PPG-extraction method, DIScriminative signature based extraction (DIS), to significantly improve the pulse-rate measurement in NIR. Our core idea is to use both the color s...
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Multi-wavelength cameras play an essential role in remote photoplethysmography (PPG). Whereas these are readily available for visible light, this is not the case for near infrared (NIR). We propose to modify existing RGB cameras to make them suited for NIR-PPG. In particular, we exploit the spectral leakage of the RGB channels in infrared in combination with a narrow dual-band filter. Such camera modification is simple, cost-effective, easy to implement, and it is shown to attain a pulse rate ex...
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#1Wenjin Wang (Philips)H-Index: 14
#2Albertus C. den Brinker (Philips)H-Index: 13
Last. Gerard De Haan (Philips)H-Index: 21
view all 3 authors...
Camera-based remote photoplethysmography (remote-PPG) technology has shown great potential for contactless pulse-rate monitoring. However, remote-PPG systems typically analyze face images, which may restrict applications in view of privacy-preserving regulations such as the recently announced General Data Protection Regulation in the European Union. In this paper, we investigate the case of using single-element sensing as an input for remote-PPG extraction, which prohibits facial analysis and th...
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