Articles with "contact free" as a keyword



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Contact-Free Pulse Signal Extraction from Human Face Videos: A Review and New Optimized Filtering Approach.

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Published in 2021 at "Advances in experimental medicine and biology"

DOI: 10.1007/978-3-030-61125-5_10

Abstract: In this chapter, we review methods for video-based heart monitoring, from classical signal processing approaches to modern deep learning methods. In addition, we propose a new method for learning an optimal filter that can overcome… read more here.

Keywords: contact free; extraction; pulse signal; method ... See more keywords
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Modular Contact-Free Conveyors for Handling Planar Fragile Objects

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Published in 2017 at "IEEE Transactions on Robotics"

DOI: 10.1109/tro.2016.2623340

Abstract: Recent studies show that the handling of thin wafers in the photovoltaic industry can lead to unacceptable yields due to cell scratching and breaking. This paper presents the concept and design of a novel modular… read more here.

Keywords: contact free; fragile objects; planar fragile; modular contact ... See more keywords
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Contact‐free radar recordings of body movement can reflect ultradian dynamics of sleep

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Published in 2022 at "Journal of Sleep Research"

DOI: 10.1111/jsr.13687

Abstract: This work aimed to evaluate if a contact‐free radar sensor can be used to observe ultradian patterns in sleep physiology, by way of a data processing tool known as Locomotor Inactivity During Sleep (LIDS). LIDS… read more here.

Keywords: movement; body movement; free radar; radar ... See more keywords
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Contact-Free Optical Assessment of Changes in the Chest Wall Perfusion after Coronary Artery Bypass Grafting by Imaging Photoplethysmography

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Published in 2020 at "Applied Sciences"

DOI: 10.3390/app10186537

Abstract: Imaging photoplethysmography (iPPG) is a contact-free monitoring of the cutaneous blood volume pulse by RGB (red-green-blue) cameras. It detects vital parameters from skin areas and is associated to cutaneous perfusion. This study investigated the use… read more here.

Keywords: perfusion; coronary artery; artery; chest wall ... See more keywords
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A Contact-Free Optical Device for the Detection of Pulmonary Congestion—A Pilot Study

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Published in 2022 at "Biosensors"

DOI: 10.3390/bios12100833

Abstract: Background: The cost of heart failure hospitalizations in the US alone is over USD 10 billion per year. Over 4 million Americans are hospitalized every year due to heart failure (HF), with a median length… read more here.

Keywords: congestion; free optical; detection; contact free ... See more keywords
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Contact-Free Support Structures for the Direct Metal Laser Melting Process

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Published in 2022 at "Materials"

DOI: 10.3390/ma15113765

Abstract: Although Direct Metal Laser Melting (DMLM), a powder bed fusion (PBF) Additive Manufacturing (AM) for metallic materials, provides many advantages over conventional manufacturing such as almost unlimited design freedom, one of its main limitations is… read more here.

Keywords: direct metal; overhang surfaces; contact free; process ... See more keywords