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https://www.readbyqxmd.com/read/29320573/an-evaluation-of-three-dimensional-photogrammetric-and-morphometric-techniques-for-estimating-volume-and-mass-in-weddell-seals-leptonychotes-weddellii
#1
Roxanne S Beltran, Brandi Ruscher-Hill, Amy L Kirkham, Jennifer M Burns
Body mass dynamics of animals can indicate critical associations between extrinsic factors and population vital rates. Photogrammetry can be used to estimate mass of individuals in species whose life histories make it logistically difficult to obtain direct body mass measurements. Such studies typically use equations to relate volume estimates from photogrammetry to mass; however, most fail to identify the sources of error between the estimated and actual mass. Our objective was to identify the sources of error that prevent photogrammetric mass estimation from directly predicting actual mass, and develop a methodology to correct this issue...
2018: PloS One
https://www.readbyqxmd.com/read/29281461/reliability-of-postural-measures-in-elite-badminton-players-using-posture-pro-8
#2
Kim Hébert-Losier, Fahmi Abd Rahman
The Posture Pro software is used for photogrammetry assessment of posture and has been commercially available for several years. Along with symmetry-related measures, a Posture Number® is calculated to reflect the sum of postural deviations. Our aim was to investigate the intra- and inter-rater reliability of measures extracted using the Posture Pro 8 software without using reference markers on subjects. Four raters assessed the standing posture of 40 badminton players (20 males, 20 females) from anterior, lateral, and posterior photographs...
December 27, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29276784/two-dimensional-digital-photography-for-child-body-posture-evaluation-standardized-technique-reliable-parameters-and-normative-data-for-age-7-10-years
#3
REVIEW
L Stolinski, M Kozinoga, D Czaprowski, M Tyrakowski, P Cerny, N Suzuki, T Kotwicki
Background: Digital photogrammetry provides measurements of body angles or distances which allow for quantitative posture assessment with or without the use of external markers. It is becoming an increasingly popular tool for the assessment of the musculoskeletal system. The aim of this paper is to present a structured method for the analysis of posture and its changes using a standardized digital photography technique. Material and methods: The purpose of the study was twofold...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/29260394/validation-and-evaluation-of-measuring-methods-for-the-3d-documentation-of-external-injuries-in-the-field-of-forensic-medicine
#4
Ursula Buck, Kirsten Buße, Lorenzo Campana, Christian Schyma
Three-dimensional (3D) measurement techniques are gaining importance in many areas. The latest developments brought more cost-effective, user-friendly, and faster technologies onto the market. Which 3D techniques are suitable in the field of forensic medicine and what are their advantages and disadvantages? This wide-ranging study evaluated and validated various 3D measurement techniques for the forensic requirements. High-tech methods as well as low-budget systems have been tested and compared in terms of accuracy, ease of use, expenditure of time, mobility, cost, necessary knowhow, and their limitations...
December 19, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29230535/a-new-method-for-non-invasive-biomass-determination-based-on-stereo-photogrammetry
#5
Maria Syngelaki, Matthias Hardner, Patrick Oberthuer, Thomas Bley, Danilo Schneider, Felix Lenk
A novel, non-destructive method for the biomass estimation of biological samples on culture dishes was developed. To achieve this, a photogrammetric system, which consists of a digital single-lens reflex camera (DSLR), an illuminated platform where the culture dishes are positioned and an Arduino board which controls the capturing process, was constructed. The camera was mounted on a holder which set the camera at different title angles and the platform rotated, to capture images from different directions. A software, based on stereo photogrammetry, was developed for the three-dimensional (3D) reconstruction of the samples...
December 11, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/29224416/utilising-three-dimensional-printing-techniques-when-providing-unique-assistive-devices-a-case-report
#6
Sarah Jane Day, Shaun Patrick Riley
BACKGROUND: The evolution of three-dimensional printing into prosthetics has opened conversations about the availability and cost of prostheses. This report will discuss how a prosthetic team incorporated additive manufacture techniques into the treatment of a patient with a partial hand amputation to create and test a unique assistive device which he could use to hold his French horn. Case description and methods: Using a process of shape capture, photogrammetry, computer-aided design and finite element analysis, a suitable assistive device was designed and tested...
December 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29223818/application-of-airborne-photogrammetry-for-the-visualisation-and-assessment-of-contamination-migration-arising-from-a-fukushima-waste-storage-facility
#7
D T Connor, P G Martin, N T Smith, L Payne, C Hutton, O D Payton, Y Yamashiki, T B Scott
Airborne systems such as lightweight and highly portable unmanned aerial vehicles (UAVs) are becoming increasingly widespread in both academia and industry - with an ever-increasing range of applications, including (but not limited to), air quality sampling, wildlife monitoring and land-use mapping. In this work, high-resolution airborne photogrammetry obtained using a multi-rotor system operating at low survey altitudes, is combined with ground-based radiation mapping data acquired at an interim storage facility for wastes removed as part of the large-scale Fukushima clean-up program...
December 7, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29221913/facial-asymmetry-correction-with-moulded-helmet-therapy-in-infants-with-deformational-skull-base-plagiocephaly
#8
Matthias Kreutz, Brigitte Fitze, Christoph Blecher, Augello Marcello, Ruben Simon, Rebecca Cremer, Hans-Florian Zeilhofer, Christoph Kunz, Johannes Mayr
PURPOSE: The recommendation issued by the American Academy of Pediatrics in the early 1990s to position infants on their back during sleep to prevent sudden infant death syndrome (SIDS) has dramatically reduced the number of deaths due to SIDS but has also markedly increased the prevalence of positional skull deformation in infants. Deformation of the base of the skull occurs predominantly in very severe deformational plagiocephaly and is accompanied by facial asymmetry, as well as an altered ear position, called ear shift...
October 16, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29216105/optical-fiber-shape-sensing-of-polyimide-skin-for-a-flexible-morphing-wing
#9
Guangkai Sun, Hong Li, Mingli Dong, Xiaoping Lou, Lianqing Zhu
This paper presents the 3D shape sensing of polyimide thin film skin for a flexible morphing wing using fiber Bragg grating (FBG) sensors. The calibration curves of the FBG sensors are measured experimentally to ensure relative accurate conversion between Bragg wavelength shift (BWS) and bending curvature of the polyimide skin. The reflection spectra of the FBG sensors are measured at different airfoil profiles, and the variation tendency of the BWS values with the airfoil profiles are analyzed. The bending curvatures of the polyimide thin film skin at different airfoil profiles are calculated using the measured BWS values of the FBG sensors and the linear interpolation algorithm...
November 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/29216047/improved-progressive-morphological-filter-for-digital-terrain-model-generation-from-airborne-lidar-data
#10
Zhenyang Hui, Beiping Wu, Youjian Hu, Yao Yevenyo Ziggah
Obtaining high-precision filtering results from airborne lidar point clouds in complex environments has always been a hot topic. Mathematical morphology was widely used for filtering, owing to its simplicity and high efficiency. However, the morphology-based algorithms are deficient in preserving terrain details. In order to obtain a better filtering effect, this paper proposed an improved progressive morphological filter based on hierarchical radial basis function interpolation (PMHR) to refine the classical progressive morphological filter...
December 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/29196651/3d-photogrammetry-quantifies-growth-and-external-erosion-of-individual-coral-colonies-and-skeletons
#11
Renata Ferrari, Will F Figueira, Morgan S Pratchett, Tatiana Boube, Arne Adam, Tania Kobelkowsky-Vidrio, Steve S Doo, Trisha Brooke Atwood, Maria Byrne
Growth and contraction of ecosystem engineers, such as trees, influence ecosystem structure and function. On coral reefs, methods to measure small changes in the structure of microhabitats, driven by growth of coral colonies and contraction of skeletons, are extremely limited. We used 3D reconstructions to quantify changes in the external structure of coral colonies of tabular Acropora spp., the dominant habitat-forming corals in shallow exposed reefs across the Pacific. The volume and surface area of live colonies increased by 21% and 22%, respectively, in 12 months, corresponding to a mean annual linear extension of 5...
December 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29186134/an-accurate-and-adaptable-photogrammetric-approach-for-estimating-the-mass-and-body-condition-of-pinnipeds-using-an-unmanned-aerial-system
#12
Douglas J Krause, Jefferson T Hinke, Wayne L Perryman, Michael E Goebel, Donald J LeRoi
Measurements of body size and mass are fundamental to pinniped population management and research. Manual measurements tend to be accurate but are invasive and logistically challenging to obtain. Ground-based photogrammetric techniques are less invasive, but inherent limitations make them impractical for many field applications. The recent proliferation of unmanned aerial systems (UAS) in wildlife monitoring has provided a promising new platform for the photogrammetry of free-ranging pinnipeds. Leopard seals (Hydrurga leptonyx) are an apex predator in coastal Antarctica whose body condition could be a valuable indicator of ecosystem health...
2017: PloS One
https://www.readbyqxmd.com/read/29185110/concurrent-validity-of-photogrammetric-and-inclinometric-techniques-based-on-assessment-of-anteroposterior-spinal-curvatures
#13
Katarzyna Walicka-Cupryś, Justyna Wyszyńska, Justyna Podgórska-Bednarz, Justyna Drzał-Grabiec
PURPOSE: The purpose of the study was to investigate correlations between parameters of anteroposterior spinal curvatures in the sagittal plane, measured with the use of photogrammetric technique and inclinometer in healthy elderly women. METHODS: Randomized study involved 50 females, ranging from 50 to 70 years of age (mean 62.26 ± 6.94); mean body mass index (BMI) 27.69 ± 4.79. The examined parameters included angle of inclination in lumbosacral spine (ALFA), thoracolumbar transition (BETA), upper thoracic segment (GAMMA), angle of lumbar lordosis (LLA) and thoracic kyphosis (TKA)...
November 28, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29149686/preliminary-application-of-structure-from-motion-and-gis-to-document-decomposition-and-taphonomic-processes
#14
Connor D Carlton, Samantha Mitchell, Patrick Lewis
Over the past decade, Structure from Motion (SfM) has increasingly been used as a means of digital preservation and for documenting archaeological excavations, architecture, and cultural material. However, few studies have tapped the potential of using SfM to document and analyze taphonomic processes affecting burials for forensic sciences purposes. This project utilizes SfM models to elucidate specific post-depositional events that affected a series of three human cadavers deposited at the South East Texas Applied Forensic Science Facility (STAFS)...
November 2, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29118612/distributional-records-of-antarctic-and-sub-antarctic-ophiuroidea-from-samples-curated-at-the-italian-national-antarctic-museum-mna-check-list-update-of-the-group-in-the-terra-nova-bay-area-ross-sea-and-launch-of-the-mna-3d-model-virtual-gallery
#15
Matteo Cecchetto, Maria Chiara Alvaro, Claudio Ghiglione, Alice Guzzi, Claudio Mazzoli, Paola Piazza, Stefano Schiaparelli
The distributional records of Ophiuroidea stored at the Italian National Antarctic Museum (MNA, Section of Genoa) are presented, corresponding to 1595 individuals that belong to 35 species and 17 genera. Specimens were collected in 106 different sampling stations at depths ranging from 21 to 1652 m in the framework of 14 Antarctic expeditions to the Ross Sea, one to the Antarctic Peninsula, and one to the Falkland Islands (Islas Malvinas). Three species, Amphiura joubini Koehler, 1912, Amphiura (Amphiura) angularis Lyman, 1879, and Ophiura flexibilis (Koehler, 1911), are reported as new records for the Terra Nova Bay area, whose check-list of species increases from 15 to 18 species...
2017: ZooKeys
https://www.readbyqxmd.com/read/29104316/determination-of-size-sex-and-maturity-stage-of-free-swimming-catsharks-using-laser-photogrammetry
#16
REVIEW
Toby D Rogers, Giulia Cambiè, Michel J Kaiser
The lack of detailed life history (LH) information (e.g. age, growth, size at maturity, sex composition etc.) for many species of conservation importance limits the implementation of appropriate conservation measures. Typically, LH information is acquired using lethal sampling techniques, which undermines the goal of conservation. This is particularly problematic for many shark species that have low fecundity and slow growth rates. Here we tested the use of non-invasive laser photogrammetry to measure body morphometry in vivo...
2017: Marine Biology
https://www.readbyqxmd.com/read/29101908/using-drone-mounted-cameras-for-on-site-body-documentation-3d-mapping-and-active-survey
#17
Petra Urbanová, Mikoláš Jurda, Tomáš Vojtíšek, Jan Krajsa
Recent advances in unmanned aerial technology have substantially lowered the cost associated with aerial imagery. As a result, forensic practitioners are today presented with easy low-cost access to aerial photographs at remote locations. The present paper aims to explore boundaries in which the low-end drone technology can operate as professional crime scene equipment, and to test the prospects of aerial 3D modeling in the forensic context. The study was based on recent forensic cases of falls from height admitted for postmortem examinations...
October 26, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29093554/the-prevalence-of-double-eyelid-and-the-3d-measurement-of-orbital-soft-tissue-in-malays-and-chinese
#18
Ting Yin Lu, Kathreena Kadir, Wei Cheong Ngeow, Siti Adibah Othman
This study aimed to determine the prevalence of double eyelid among two main Mongoloid ethnicities, the Malays and Chinese who reside in Malaysia. We also measured their periorbital tissue parameters for application in anthropology, optometry, ophthalmology, oculoplastic surgery and maxillofacial trauma surgery. The images of the 103 Malay and 97 Chinese volunteers were captured using indirect 3D photogrammetry, and quantitative measurement was obtained using the software provided by the manufacturer. All Malays and 70...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29092204/superfast-high-resolution-absolute-3d-recovery-of-a-stabilized-flapping-flight-process
#19
Beiwen Li, Song Zhang
Scientific research of a stabilized flapping flight process (e.g. hovering) has been of great interest to a variety of fields including biology, aerodynamics, and bio-inspired robotics. Different from the current passive photogrammetry based methods, the digital fringe projection (DFP) technique has the capability of performing dense superfast (e.g. kHz) 3D topological reconstructions with the projection of defocused binary patterns, yet it is still a challenge to measure a flapping flight process with the presence of rapid flapping wings...
October 30, 2017: Optics Express
https://www.readbyqxmd.com/read/29070893/linking-fishes-to-multiple-metrics-of-coral-reef-structural-complexity-using-three-dimensional-technology
#20
M González-Rivero, A R Harborne, A Herrera-Reveles, Y-M Bozec, A Rogers, A Friedman, A Ganase, O Hoegh-Guldberg
Structural complexity strongly influences biodiversity and ecosystem productivity. On coral reefs, structural complexity is typically measured using a single and small-scale metric ('rugosity') that represents multiple spatial attributes differentially exploited by species, thus limiting a complete understanding of how fish associate with reef structure. We used a novel approach to compare relationships between fishes and previously unavailable components of reef complexity, and contrasted the results against the traditional rugosity index...
October 25, 2017: Scientific Reports
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