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https://www.readbyqxmd.com/read/28508821/measuring-the-negative-impact-of-long-sitting-hours-at-high-school-students-using-the-microsoft-kinect
#1
Norbert Gal-Nadasan, Emanuela Georgiana Gal-Nadasan, Vasile Stoicu-Tivadar, Dan V Poenaru, Diana Popa-Andrei
This paper suggests the usage of the Microsoft Kinect to detect the onset of the scoliosis at high school students due to incorrect sitting positions. The measurement is done by measuring the overall posture in orthostatic position using the Microsoft Kinect. During the measuring process several key points of the human body are tracked like the hips and shoulders to form the postural data. The test was done on 30 high school students who spend 6 to 7 hours per day in the school benches. The postural data is statistically processed by IBM Watson's Analytics...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28508027/violent-actions-against-children
#2
Muhammad Alhammami, Chee-Pun Ooi, Wooi-Haw Tan
We present in this paper a novel dataset (MMU VAAC) for violent actions against children recognition. This original dataset has been recorded using Microsoft Kinect with the usage of a child mannequin. MMU VAAC dataset contains skeleton joints, depth, and RGB modalities.
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28506007/validation-study-of-a-kinect-based-body-imaging-system
#3
Sara Bragança, Pedro Arezes, Miguel Carvalho, Susan P Ashdown, Bugao Xu, Ignacio Castellucci
BACKGROUND: Understanding the reliability and precision of the data obtained using three-dimensional body scanners is very important if it is intended to replace the traditional data collection methods. If the collection of anthropometric data with three-dimensional body scanners is a fast and reliable process that produces precise data at a low price, it could be used for numerous applications worldwide. Many studies have addressed data collected by white light and laser based scanners...
May 6, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28498339/easy-and-fast-reconstruction-of-a-3d-avatar-with-an-rgb-d-sensor
#4
Aihua Mao, Hong Zhang, Yuxin Liu, Yinglong Zheng, Guiqing Li, Guoqiang Han
This paper proposes a new easy and fast 3D avatar reconstruction method using an RGB-D sensor. Users can easily implement human body scanning and modeling just with a personal computer and a single RGB-D sensor such as a Microsoft Kinect within a small workspace in their home or office. To make the reconstruction of 3D avatars easy and fast, a new data capture strategy is proposed for efficient human body scanning, which captures only 18 frames from six views with a close scanning distance to fully cover the body; meanwhile, efficient alignment algorithms are presented to locally align the data frames in the single view and then globally align them in multi-views based on pairwise correspondence...
May 12, 2017: Sensors
https://www.readbyqxmd.com/read/28492473/acquisition-and-neural-network-prediction-of-3d-deformable-object-shape-using-a-kinect-and-a-force-torque-sensor
#5
Bilal Tawbe, Ana-Maria Cretu
The realistic representation of deformations is still an active area of research, especially for deformable objects whose behavior cannot be simply described in terms of elasticity parameters. This paper proposes a data-driven neural-network-based approach for capturing implicitly and predicting the deformations of an object subject to external forces. Visual data, in the form of 3D point clouds gathered by a Kinect sensor, is collected over an object while forces are exerted by means of the probing tip of a force-torque sensor...
May 11, 2017: Sensors
https://www.readbyqxmd.com/read/28491483/twelve-weeks-of-dance-exergaming-in-overweight-and-obese-adolescent-girls-transfer-effects-on-physical-activity-screen-time-and-self-efficacy
#6
Amanda E Staiano, Robbie A Beyl, Daniel S Hsia, Peter T Katzmarzyk, Robert L Newton
BACKGROUND: Given the low levels of physical activity (PA) among adolescent girls in the US, there is a need to identify tools to motivate increased PA. Although there is limited evidence that adolescents transfer PA from one context to another context, exergames (i.e., video games that require gross motor activity) may act as a gateway to promote overall PA outside of game play. The purpose of this study was to examine potential transfer effects (i.e., influences on external behaviors and psychological constructs) of a 12-week exergaming intervention on adolescent girls' PA, screen-time, and self-efficacy towards PA, as well as the intrinsic motivation of exergaming...
March 2017: Journal of Sport and Health Science
https://www.readbyqxmd.com/read/28475056/fast-descriptors-and-correspondence-propagation-for-robust-global-point-cloud-registration
#7
Huan Lei, Guang Jiang, Long Quan
In this paper, we present a robust global approach for point cloud registration from uniformly sampled points. Based on eigenvalues and normals computed from multiple scales, we design fast descriptors to extract local structures of these points. The eigenvalue-based descriptor is effective at finding seed matches with low precision using nearest neighbour search. Generally, recovering the transformation from matches with low precision is rather challenging. Therefore, we introduce a mechanism named correspondence propagation to aggregate each seed match into a set of numerous matches...
May 3, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28464927/design-and-test-of-an-automated-version-of-the-modified-jebsen-test-of-hand-function-using-microsoft-kinect
#8
Daniel Simonsen, Ida F Nielsen, Erika G Spaich, Ole K Andersen
BACKGROUND: The present paper describes the design and evaluation of an automated version of the Modified Jebsen Test of Hand Function (MJT) based on the Microsoft Kinect sensor. METHODS: The MJT was administered twice to 11 chronic stroke subjects with varying degrees of hand function deficits. The test times of the MJT were evaluated manually by a therapist using a stopwatch, and automatically using the Microsoft Kinect sensor. The ground truth times were assessed based on inspection of the video-recordings...
May 2, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28464097/live-animal-assessments-of-rump-fat-and-muscle-score-in-angus-cows-and-steers-using-3-dimensional-imaging
#9
M J McPhee, B J Walmsley, B Skinner, B Littler, J P Siddell, L M Cafe, J F Wilkins, V H Oddy, A Alempijevic
The objective of this study was to develop a proof of concept for using off-the-shelf Red Green Blue-Depth (RGB-D) Microsoft Kinect cameras to objectively assess P8 rump fat (P8 fat; mm) and muscle score (MS) traits in Angus cows and steers. Data from low and high muscled cattle (156 cows and 79 steers) were collected at multiple locations and time points. The following steps were required for the 3-dimensional (3D) image data and subsequent machine learning techniques to learn the traits: 1) reduce the high dimensionality of the point cloud data by extracting features from the input signals to produce a compact and representative feature vector, 2) perform global optimization of the signatures using machine learning algorithms and a parallel genetic algorithm, and 3) train a sensor model using regression-supervised learning techniques on the ultrasound P8 fat and the classified learning techniques for the assessed MS for each animal in the data set...
April 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28430119/influence-of-wind-speed-on-rgb-d-images-in-tree-plantations
#10
Dionisio Andújar, José Dorado, José María Bengochea-Guevara, Jesús Conesa-Muñoz, César Fernández-Quintanilla, Ángela Ribeiro
Weather conditions can affect sensors' readings when sampling outdoors. Although sensors are usually set up covering a wide range of conditions, their operational range must be established. In recent years, depth cameras have been shown as a promising tool for plant phenotyping and other related uses. However, the use of these devices is still challenged by prevailing field conditions. Although the influence of lighting conditions on the performance of these cameras has already been established, the effect of wind is still unknown...
April 21, 2017: Sensors
https://www.readbyqxmd.com/read/28418751/influence-of-exergaming-on-the-perception-of-cancer-related-fatigue
#11
Ricardo da Silva Alves, Denise Hollanda Iunes, Isabela Carvalho Pereira, Juliana Bassalobre Carvalho Borges, Denismar Alves Nogueira, Andreia Maria Silva, Daniel Ferreira Moreira Lobato, Leonardo Cesar Carvalho
OBJECTIVE: Exercise is recommended for cancer patients to reduce fatigue and improve quality of life. This study's aim is to evaluate the influence of an exergaming protocol on cancer-related fatigue, muscle fatigue, and muscle strength in cancer patients. MATERIALS AND METHODS: We conducted a quasi-experimental control study using exergaming in all groups through an Xbox360 Kinect™ console, two to three times per week, for 20 sessions. Three groups were created: cancer patients in chemotherapy and/or radiotherapy group (CRG; n:15), cancer patients after chemotherapy and/or radiotherapy (CAG; n:15), and a control group (CG; n:15)...
April 2017: Games for Health
https://www.readbyqxmd.com/read/28415258/fluctuations-around-mean-walking-behaviors-in-diluted-pedestrian-flows
#12
Alessandro Corbetta, Chung-Min Lee, Roberto Benzi, Adrian Muntean, Federico Toschi
Understanding and modeling the dynamics of pedestrian crowds can help with designing and increasing the safety of civil facilities. A key feature of a crowd is its intrinsic stochasticity, appearing even under very diluted conditions, due to the variability in individual behaviors. Individual stochasticity becomes even more important under densely crowded conditions, since it can be nonlinearly magnified and may lead to potentially dangerous collective behaviors. To understand quantitatively crowd stochasticity, we study the real-life dynamics of a large ensemble of pedestrians walking undisturbed, and we perform a statistical analysis of the fully resolved pedestrian trajectories obtained by a yearlong high-resolution measurement campaign...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28410413/validation-of-enhanced-kinect-sensor-based-motion-capturing-for-gait-assessment
#13
Björn Müller, Winfried Ilg, Martin A Giese, Nicolas Ludolph
Optical motion capturing systems are expensive and require substantial dedicated space to be set up. On the other hand, they provide unsurpassed accuracy and reliability. In many situations however flexibility is required and the motion capturing system can only temporarily be placed. The Microsoft Kinect v2 sensor is comparatively cheap and with respect to gait analysis promising results have been published. We here present a motion capturing system that is easy to set up, flexible with respect to the sensor locations and delivers high accuracy in gait parameters comparable to a gold standard motion capturing system (VICON)...
2017: PloS One
https://www.readbyqxmd.com/read/28408157/microsoft-kinect-can-distinguish-differences-in-over-ground-gait-between-older-persons-with-and-without-parkinson-s-disease
#14
Moataz Eltoukhy, Christopher Kuenze, Jeonghoon Oh, Marco Jacopetti, Savannah Wooten, Joseph Signorile
Gait patterns differ between healthy elders and those with Parkinson's disease (PD). A simple, low-cost clinical tool that can evaluate kinematic differences between these populations would be invaluable diagnostically; since gait analysis in a clinical setting is impractical due to cost and technical expertise. This study investigated the between group differences between the Kinect and a 3D movement analysis system (BTS) and reported validity and reliability of the Kinect v2 sensor for gait analysis. Nineteen subjects participated, eleven without (C) and eight with PD (PD)...
April 10, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28404690/pharmacologic-characterization-of-valbenazine-nbi-98854-and-its-metabolites
#15
Dimitri E Grigoriadis, Evan Smith, Sam R J Hoare, Ajay Madan, Haig Bozigian
The vesicular monoamine transporter 2 (VMAT2) is an integral presynaptic protein that regulates the packaging and subsequent release of dopamine and other monoamines from neuronal vesicles into the synapse. Valbenazine (NBI-98854), a novel compound that selectively inhibits VMAT2, is being developed for the treatment of tardive dyskinesia. Valbenazine is converted to two significant circulating metabolites in vivo, namely, (+)-α-dihydrotetrabenazine (R,R,R-DHTBZ) and a mono-oxy metabolite, NBI-136110. Radioligand binding studies were conducted to assess and compare valbenazine, tetrabenazine and their respective metabolites in their abilities to selectively and potently inhibit [(3)H]-DHTBZ binding to VMAT2 in rat striatal, rat forebrain, and human platelet homogenates...
April 12, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28400984/is-technology-present-in-frailty-technology-a-back-up-tool-for-dealing-with-frailty-in-the-elderly-a-systematic-review
#16
REVIEW
Iranzu Mugueta-Aguinaga, Begonya Garcia-Zapirain
This study analyzes the technologies used in dealing with frailty within the following areas: prevention, care, diagnosis and treatment. The aim of this paper is, on the one hand, to analyze the extent to which technology is present in terms of its relationship with frailty and what technological resources are used to treat it. Its other purpose is to define new challenges and contributions made by physiotherapy using technology. Eighty documents related to research, validation and/or the ascertaining of different types of hardware, software or both were reviewed in prominent areas...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28398175/interactive-design-of-patient-oriented-video-games-for-rehabilitation-concept-and-application
#17
Giorgia Lupinacci, Gianluca Gatti, Corrado Melegari, Saverio Fontana
PURPOSE: Serious video-games are innovative tools used to train the motor skills of subjects affected by neurological disorders. They are often developed to train a specific type of patients and the rules of the game are standardly defined. A system that allows the therapist to design highly patient-oriented video-games, without specific informatics skills, is proposed. METHOD: The system consists of one personal computer, two screens, a Kinect™ sensor and a specific software developed here for the design of the video-games...
April 11, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28397759/a-high-spatial-resolution-depth-sensing-method-based-on-binocular-structured-light
#18
Huimin Yao, Chenyang Ge, Jianru Xue, Nanning Zheng
Depth information has been used in many fields because of its low cost and easy availability, since the Microsoft Kinect was released. However, the Kinect and Kinect-like RGB-D sensors show limited performance in certain applications and place high demands on accuracy and robustness of depth information. In this paper, we propose a depth sensing system that contains a laser projector similar to that used in the Kinect, and two infrared cameras located on both sides of the laser projector, to obtain higher spatial resolution depth information...
April 8, 2017: Sensors
https://www.readbyqxmd.com/read/28395854/using-the-microsoft-kinect%C3%A2-to-assess-3-d-shoulder-kinematics-during-computer-use
#19
Xu Xu, Michelle Robertson, Karen B Chen, Jia-Hua Lin, Raymond W McGorry
Shoulder joint kinematics has been used as a representative indicator to investigate musculoskeletal symptoms among computer users for office ergonomics studies. The traditional measurement of shoulder kinematics normally requires a laboratory-based motion tracking system which limits the field studies. In the current study, a portable, low cost, and marker-less Microsoft Kinect™ sensor was examined for its feasibility on shoulder kinematics measurement during computer tasks. Eleven healthy participants performed a standardized computer task, and their shoulder kinematics data were measured by a Kinect sensor and a motion tracking system concurrently...
April 7, 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28391197/virtual-character-animation-based-on-affordable-motion-capture-and-reconfigurable-tangible-interfaces
#20
Fabrizio Lamberti, Gianluca Paravati, Valentina Gatteschi, Alberto Cannavo, Paolo Montuschi
Software for computer animation is generally characterized by a steep learning curve, due to the entanglement of both sophisticated techniques and interaction methods required to control 3D geometries. This paper proposes a tool designed to support computer animation production processes by leveraging the affordances offered by articulated tangible user interfaces and motion capture retargeting solutions. To this aim, orientations of an instrumented prop are recorded together with animator's motion in the 3D space and used to quickly pose characters in the virtual environment...
April 3, 2017: IEEE Transactions on Visualization and Computer Graphics
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