scholarly journals Remote Monitoring of Vital Signs Using Computer Vision Systems

2019 ◽  
Author(s):  
Fatema-Tuz-Zohra Khanam
Keyword(s):  
Computer Vision ◽  
Vital Signs ◽  
Cost Effective ◽  
Long Distance ◽  
Sensor Platforms ◽  
Clinical Scenarios ◽  
Multiple Regions ◽  
Computer Vision Systems ◽  
Term Monitoring

Techniques for noncontact measurement of vital signs using camera imaging technologies have been attracting increasing attention. For noncontact physiological assessments, computer vision-based methods appear to be an advantageous approach that could be robust, hygienic, reliable, safe, cost effective and suitable for long distance and long-term monitoring. In addition, video techniques allow measurements from multiple individuals opportunistically and simultaneously in groups. This paper aims to explore the progress of the technology from controlled clinical scenarios with fixed monitoring installations and controlled lighting, towards uncontrolled environments, crowds and moving sensor platforms. We focus on the diversity of applications and scenarios being studied in this topic. From this review it emerges that automatic multiple regions of interest (ROIs) selection, removal of noise artefacts caused by both illumination variations and motion artefacts, simultaneous multiple person monitoring, long distance detection, multi-camera fusion and accepted publicly available datasets are topics that still require research to enable the technology to mature into many real-world applications.

scholarly journals Remote Monitoring of Vital Signs in Diverse Non-Clinical and Clinical Scenarios Using Computer Vision Systems: A Review

2019 ◽  
Vol 9 (20) ◽  
pp. 4474 ◽  
Author(s):  
Khanam ◽  
Al-Naji ◽  
Chahl
Keyword(s):  
Computer Vision ◽  
Vital Signs ◽  
Cost Effective ◽  
Long Distance ◽  
Sensor Platforms ◽  
Clinical Scenarios ◽  
Multiple Regions ◽  
Computer Vision Systems ◽  
Term Monitoring

Techniques for noncontact measurement of vital signs using camera imaging technologies have been attracting increasing attention. For noncontact physiological assessments, computer vision-based methods appear to be an advantageous approach that could be robust, hygienic, reliable, safe, cost effective and suitable for long distance and long-term monitoring. In addition, video techniques allow measurements from multiple individuals opportunistically and simultaneously in groups. This paper aims to explore the progress of the technology from controlled clinical scenarios with fixed monitoring installations and controlled lighting, towards uncontrolled environments, crowds and moving sensor platforms. We focus on the diversity of applications and scenarios being studied in this topic. From this review it emerges that automatic multiple regions of interest (ROIs) selection, removal of noise artefacts caused by both illumination variations and motion artefacts, simultaneous multiple person monitoring, long distance detection, multi-camera fusion and accepted publicly available datasets are topics that still require research to enable the technology to mature into many real-world applications.

Development and Assembly of a MEMS Based High-Sensitivity Relative Gravimeter for Multi-Pixel Imaging Applications 

2021 ◽  
Author(s):  
Karl Toland ◽  
Abhinav Prasad ◽  
Andreas Noack ◽  
Kristian Anastasiou ◽  
Richard Middlemiss ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Cost Effective ◽  
Mount Etna ◽  
Earth Tides ◽  
Gravity Measurements ◽  
Stepper Motors ◽  
Long Term Monitoring ◽  
The Stability ◽  
Term Monitoring

<p>The manufacture and production of a high-sensitivity cost-effective gravimeter has the potential to change the methodology and efficiency of gravity measurements. Currently, the most common method to conduct a survey is by using a single gravimeter, usually costing tens of thousands of Dollars, with measurements taken at multiple locations to obtain the required data. The availability of a cost-effective gravimeter however would allow the user to install multiple gravimeters, at the same cost of a single gravimeter, to increase the efficiency of surveys and long-term monitoring.  </p><p> </p><p>Since the previous reporting on a low-drift relative MEMS gravimeter for multi-pixel imaging applications (Prasad, A. et al, EGU2020-18528), significant progress has been made in the development and assembly of the previously reported system. Field prototypes have been manufactured and undergone significant testing to investigate the stability and robustness of the system in preparation for the deployment of multiple devices as part of the gravity imager on Mount Etna. The device, known as Wee-g, has several key features which makes it an attractive prospect in the field of gravimetry. Examples of these features are that the Wee-g is small and portable with the ability to connect to the device remotely, can be powered through a mains connected power supply, or through portable batteries, weighs under 4kg, has a low power consumption during normal use of 5W, correct for tilt through manual adjustments or remotely through integrated stepper motors with a total tilt correction range of 5 degrees, the ability to read out tilt of the device through an inclinometer for either alignment or long term monitoring and numerous temperature sensors and heater servos to control the temperature of the MEMS to <1mK.</p><p> </p><p>This presentation aims to report on the progress that has been achieved in the development and manufacturing of the prototype devices, various testing of the devices under various laboratory conditions (such as the measurements of the Earth tides, and a relative measurement of gravity at various floor levels), as well as additional applications that are to be explored in 2021. </p>

scholarly journals Cost-effective autonomous sensor for the long-term monitoring of water electrical conductivity of crop fields

2019 ◽  
Vol 165 ◽  
pp. 104940 ◽  
Author(s):  
Ernesto Serrano-Finetti ◽  
Carles Aliau-Bonet ◽  
Oscar López-Lapeña ◽  
Ramon Pallàs-Areny
Keyword(s):  
Electrical Conductivity ◽  
Cost Effective ◽  
Crop Fields ◽  
Autonomous Sensor ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals A Cost-Effective Trace Gas Measurement Program for Long-Term Monitoring of the Stratospheric Circulation

2014 ◽  
Vol 95 (1) ◽  
pp. 147-155 ◽  
Author(s):  
Fred L. Moore ◽  
Eric A. Ray ◽  
Karen H. Rosenlof ◽  
James W. Elkins ◽  
Pieter Tans ◽  
...  
Keyword(s):  
Cost Effective ◽  
Trace Gas ◽  
Gas Measurement ◽  
Stratospheric Circulation ◽  
Long Term Monitoring ◽  
Term Monitoring

scholarly journals Efficient routes to land conservation given risk of covenant failure

2015 ◽  
Author(s):  
Richard Schuster ◽  
Peter Arcese
Keyword(s):  
Cost Effectiveness ◽  
Cost Effective ◽  
Private Land ◽  
Legal Challenges ◽  
Monitoring And Enforcement ◽  
Cost Effective Alternative ◽  
The Cost ◽  
Conservation Investment ◽  
Term Monitoring

Conservation initiatives to protect valued species communities in human-dominated landscapes face challenges linked to their potential costs. Conservation covenants on private land may represent a cost-effective alternative to land purchase, although many questions on the long-term monitoring and enforcement costs of covenants and the risk of violation or legal challenges remain unquantified. We explore the cost-effectiveness of conservation covenants, defined here as the fraction of the high-biodiversity landscape potentially protected via investment in covenants versus land purchase. We show that covenant violation and dispute rates substantially affect the estimated long-term cost-effectiveness of a covenant versus land purchase strategy. Our results suggest the long-term cost-effectiveness of conservation covenants may outperform land purchase as a strategy to protect biodiversity as long as disputes and legal challenges are low, but point to a critical need for monitoring data to reduce uncertainty and maximize conservation investment cost-effectiveness.

scholarly journals Efficient routes to land conservation given risk of covenant failure

2015 ◽  
Author(s):  
Richard Schuster ◽  
Peter Arcese
Keyword(s):  
Cost Effectiveness ◽  
Cost Effective ◽  
Private Land ◽  
Legal Challenges ◽  
Monitoring And Enforcement ◽  
Cost Effective Alternative ◽  
The Cost ◽  
Conservation Investment ◽  
Term Monitoring

Conservation initiatives to protect valued species communities in human-dominated landscapes face challenges linked to their potential costs. Conservation covenants on private land may represent a cost-effective alternative to land purchase, although many questions on the long-term monitoring and enforcement costs of covenants and the risk of violation or legal challenges remain unquantified. We explore the cost-effectiveness of conservation covenants, defined here as the fraction of the high-biodiversity landscape potentially protected via investment in covenants versus land purchase. We show that covenant violation and dispute rates substantially affect the estimated long-term cost-effectiveness of a covenant versus land purchase strategy. Our results suggest the long-term cost-effectiveness of conservation covenants may outperform land purchase as a strategy to protect biodiversity as long as disputes and legal challenges are low, but point to a critical need for monitoring data to reduce uncertainty and maximize conservation investment cost-effectiveness.

scholarly journals Brood parasitism on Meadow Pipits Anthus pratensis by Common Cuckoos Cuculus canorus in two mountain areas in Norway

2019 ◽  
Vol 42 ◽  
pp. 7-14
Author(s):  
Jan Rolf Berstad ◽  
Bård Stokke ◽  
Arne Moksnes
Keyword(s):  
Brood Parasitism ◽  
Cuculus Canorus ◽  
Long Distance ◽  
Mountain Areas ◽  
Anthus Pratensis ◽  
Meadow Pipit ◽  
Southern Norway ◽  
Host Parasite ◽  
Term Monitoring

In the period 2001–2014 we studied Common Cuckoo Cuculus canorus brood parasitism on Meadow Pipits Anthus pratensis in two mountain areas; one located in the eastern and one in the western part of southern Norway. In the total material of 211 Meadow Pipit nests, 14 (6.6%) were parasitized by the cuckoo. The parasitism rate showed considerable variation both in time and space, with highest rate in one of the areas in 2005 (35.3%). Cuckoo eggs were quite similar in appearance to host eggs. In spite of this, 30% of the cuckoo eggs were rejected by desertion. No host ejection of parasite eggs was observed. Nest predation rates were rather low. Due to climate change, it has been hypothesized that the cuckoo, a long-distance migrant, may arrive too late to successfully utilize the Meadow Pipit because the latter is better able to advance the breeding season due to a shorter migration distance. Our data lend support to the mismatch hypothesis, but the low sample size regarding cases of parasitism does not allow us to make any firm conclusions. Long-term monitoring of host-parasite interactions in specific populations is important to further disclose the mechanisms responsible for the decline in the Norwegian cuckoo population.

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