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Intra-abdominal laparoscopic assessment of organs perfusion using imaging photoplethysmography
Surgical Endoscopy, 2023An objective evaluation of the functional state and viability of biological tissues during minimally invasive surgery remains unsolved task. Various non-contact methods for evaluating perfusion during laparoscopic surgery are discussed in the literature, but so far there have been no reports of their use in clinical settings.Imaging ...
Victor A. Kashchenko +4 more
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Motion artifacts suppression for remote imaging photoplethysmography
2014 19th International Conference on Digital Signal Processing, 2014Remote imaging photoplethysmography (RIPPG) is able to access human vital signs without physical contact. However most of the conventional RIPPG approaches are susceptive to motions of subjects or camera. Overcoming motion artifacts presents one of the most challenging problems.
Litong Feng +3 more
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High-precision Imaging Photoplethysmography-remote
Optica Biophotonics Congress 2025Imaging photoplethysmography (iPPG) allows noninvasive, noncontact monitoring of heart rate, cardiac variability, and diastole-systole ratio, overcoming the limitations of the traditional method for clinical and portable applications.
N Gomez-Gonzalez +4 more
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Motion robust Imaging photoplethysmography in defocus blurring
Applications of Digital Image Processing XLII, 2019Non-contact, imaging photoplethysmography (IPPG) uses video sequence to measure variations in light absorption, caused by blood volume pulsations, to extract cardiopulmonary parameters including heart rate (HR), pulse rate variability, and respiration rate.
Yuheng Wu +9 more
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Optimum Wavelengths in the Near Infrared for Imaging Photoplethysmography
IEEE Transactions on Biomedical Engineering, 2019The purpose of this contribution is to determine the ideal near infrared wavelength bands for monochromatic and dual-band remote heartbeat detection using imaging photoplethysmography (iPPG) of the forehead.Experimental data of 38 healthy volunteers has been recorded and analyzed. For the data acquisition, a fast hyperspectral imager has been used.
Felicia Wurtenberger +5 more
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Photoplethysmography Imaging and Common Optical Hybrid Imaging Modalities
2018Due to their obvious advantages, active and passive optoelectronic sensor concepts for monitoring cardiorespiratory vital signs and detection of rhythmical phenomena in dermal blood perfusion are being investigated by various biomedical groups, particularly their camera-based variants.
Vladimir Blazek +6 more
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Novel instrumental markers of proximal scleroderma provided by imaging photoplethysmography
Physiological Measurement, 2020Instrumental identification of proximal scleroderma, which is necessary for the early diagnosis of systemic sclerosis (SSD), has not yet been developed. The aim of this study was to assess the potential diagnostic value of the imaging photoplethysmography (IPPG) method in patients with SSD.The study enrolled 19 patients with SSD and 21 healthy subjects
Oleg V Mamontov +5 more
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Wavelet Based Measurement on Photoplethysmography by Smartphone Imaging
Applied Mechanics and Materials, 2013[Purpose] Smartphones video cameras can be used to detect the photoplethysmograph (PPG) signal.The pulse wave signal detected by smartphone always mixed mass noise because of finger moving, unevenness of pressure and outer light interference. Previous studies limit to the filtering algorithm that denoising signals, without considering characteristics ...
Bin Ju, Yun Tao Qian, Huo Jie Ye
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Video-Based Stress Level Measurement Using Imaging Photoplethysmography
2019 IEEE International Conference on Multimedia & Expo Workshops (ICMEW), 2019In this paper, we propose a method for measuring stress levels using pulse rate variability features without any contact devices. Mental stress can be considered as a crucial factor which triggers mental diseases such as depression. In order to deal with the mental stress, many researchers tried to quantize the mental stress making full use of vital ...
Ryota Mitsuhashi +6 more
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Imaging photoplethysmography for assessment of chronic pain patients
Optical Diagnostics and Sensing XIX: Toward Point-of-Care Diagnostics, 2019In present pilot study application of multi-spectral imaging photoplethysmography for assessment of chronic pain patients during topical skin heating test was proposed. Photoplethysmography signal was recorded at 420nm, 530nm and 810nm illumination from the skin and corresponding perfusion indexes and perfusion maps were calculated. The novel parameter-
Uldis Rubins +4 more
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