The Experts below are selected from a list of 62793 Experts worldwide ranked by ideXlab platform
Justin Starren - One of the best experts on this subject based on the ideXlab platform.
-
StressCam: Non-contact Measurement of Users’ Emotional States through Thermal Imaging
CHI05 extended abstracts on Human factors in computing systems, 2005Co-Authors: Colin Puri, Leslie Olson, James Levine, Ioannis Pavlidis, Justin StarrenAbstract:We present a novel methodology for monitoring the affective states of computer users. The method is based on Thermal Imaging of the face. To the user, the Imaging system appears much like a video-conferencing camera. The method does not require contact with the subject and is passive; therefore, monitoring can be continuous and transparent to the computer user. We have found that user stress is correlated with increased blood flow in the frontal vessel of the forehead. This increased blood flow dissipates convective heat, which can be monitored through Thermal Imaging. The system has been evaluated on 12 subjects, and compared against real-time measurements of Energy Expenditure (EE). The new method is highly correlated with the established, but awkward EE methodology. The StressCam methodology is applicable to many instances where the real time measurement of users' emotional state is needed.
Y. Myasoedov - One of the best experts on this subject based on the ideXlab platform.
-
Nanoscale Thermal Imaging of dissipation in quantum systems
Nature, 2016Co-Authors: D. Halbertal, J. Cuppens, M. Ben Shalom, L. Embon, N. Shadmi, Y. Anahory, H. R. Naren, J. Sarkar, Y. Ronen, Y. MyasoedovAbstract:Energy dissipation is a fundamental process governing the dynamics of physical, chemical and biological systems. It is also one of the main characteristics that distinguish quantum from classical phenomena. In particular, in condensed matter physics, scattering mechanisms, loss of quantum information or breakdown of topological protection are deeply rooted in the intricate details of how and where the dissipation occurs. Yet the microscopic behaviour of a system is usually not formulated in terms of dissipation because energy dissipation is not a readily measurable quantity on the micrometre scale. Although nanoscale thermometry has gained much recent interest^ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , existing Thermal Imaging methods are not sensitive enough for the study of quantum systems and are also unsuitable for the low-temperature operation that is required. Here we report a nano-thermometer based on a superconducting quantum interference device with a diameter of less than 50 nanometres that resides at the apex of a sharp pipette: it provides scanning cryogenic Thermal sensing that is four orders of magnitude more sensitive than previous devices—below 1 μK Hz^−1/2. This non-contact, non-invasive thermometry allows Thermal Imaging of very low intensity, nanoscale energy dissipation down to the fundamental Landauer limit^ 16 , 17 , 18 of 40 femtowatts for continuous readout of a single qubit at one gigahertz at 4.2 kelvin. These advances enable the observation of changes in dissipation due to single-electron charging of individual quantum dots in carbon nanotubes. They also reveal a dissipation mechanism attributable to resonant localized states in graphene encapsulated within hexagonal boron nitride, opening the door to direct Thermal Imaging of nanoscale dissipation processes in quantum matter. A cryogenic Thermal Imaging technique that uses a superconducting quantum interference device fabricated on the tip of a sharp pipette can be used to image the Thermal signature of extremely low power nanometre-scale dissipation processes. The details of how and where energy is dissipated are fundamental to the microscopic behaviour of quantum systems. Dorri Halbertal et al . have developed a cryogenic Thermal Imaging technique that promises to help to elucidate these details. The key component of their method is a superconducting quantum interference device mounted on the tip of a sharp pipette, which they show can be used to image the Thermal signature of extremely low-energy nanoscale dissipation processes. The potential of the system is demonstrated in preliminary studies of systems including nanotubes and grapheme; future investigations will target more exotic states of matter, such as those associated with quantum Hall systems.
Joanna M Skillman - One of the best experts on this subject based on the ideXlab platform.
-
detection of perforators using smartphone Thermal Imaging
Plastic and Reconstructive Surgery, 2016Co-Authors: Joseph Hardwicke, Omer Osmani, Joanna M SkillmanAbstract:Thermal Imaging detects infrared radiation from an object, producing a thermogram that can be interpreted as a surrogate marker for cutaneous blood flow. To date, high-resolution cameras typically cost tens of thousands of dollars. The FLIR ONE is a smartphone-compatible miniature Thermal Imaging camera that currently retails at under $200. In a proof-of-concept study, patients and healthy volunteers were assessed with Thermal Imaging for (1) detecting and mapping perforators, (2) defining perforasomes, and (3) monitoring free flaps. Preoperative, intraoperative, and postoperative thermograms can assist in the planning, execution, and monitoring of free flaps, and the FLIR ONE provides a low-cost adjunct that could be applied to other areas of burns and plastic surgery.
Petros Perros - One of the best experts on this subject based on the ideXlab platform.
-
novel Thermal Imaging analysis technique for detecting inflammation in thyroid eye disease
The Journal of Clinical Endocrinology and Metabolism, 2014Co-Authors: Di Maria C, John Allen, J Dickinson, C Neoh, Petros PerrosAbstract:Context: The disease phase in thyroid eye disease (TED) is commonly assessed by clinical investigation of cardinal signs of inflammation and using the clinical activity score (CAS). Although CAS is the current gold standard, the clinical assessment would benefit if a more objective tool were available. Objective: The aim of this work was to explore the clinical value of a novel Thermal Imaging analysis technique to objectively quantify the Thermal characteristics of the eye and peri-orbital region and determine the disease phase in TED. Design: This was a cross-sectional study comparing consecutive patients with active TED (CAS ≥3/7) attending a tertiary center, with a group of consecutive patients with inactive TED (CAS <3). Patients: Thermal images were acquired from 30 TED patients, 17 with active disease and 13 with inactive disease. Interventions: Patients underwent standard ophthalmological clinical assessments and Thermal Imaging. Main Outcome Measures: Five novel Thermal eye parameters (TEP) were ...
Colin Puri - One of the best experts on this subject based on the ideXlab platform.
-
StressCam: Non-contact Measurement of Users’ Emotional States through Thermal Imaging
CHI05 extended abstracts on Human factors in computing systems, 2005Co-Authors: Colin Puri, Leslie Olson, James Levine, Ioannis Pavlidis, Justin StarrenAbstract:We present a novel methodology for monitoring the affective states of computer users. The method is based on Thermal Imaging of the face. To the user, the Imaging system appears much like a video-conferencing camera. The method does not require contact with the subject and is passive; therefore, monitoring can be continuous and transparent to the computer user. We have found that user stress is correlated with increased blood flow in the frontal vessel of the forehead. This increased blood flow dissipates convective heat, which can be monitored through Thermal Imaging. The system has been evaluated on 12 subjects, and compared against real-time measurements of Energy Expenditure (EE). The new method is highly correlated with the established, but awkward EE methodology. The StressCam methodology is applicable to many instances where the real time measurement of users' emotional state is needed.
