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JOURNAL ARTICLE
Lijing Cai, Xiangyu Dong, Kailai Zhou, Xun Cao
We endeavor on a rarely explored task named thermal infrared video denoising. Perception in the thermal infrared significantly enhances the capabilities of machine vision. Nonetheless, noise in imaging systems is one of the factors that hampers the large-scale application of equipment. Existing thermal infrared denoising methods, primarily focusing on the image level, inadequately utilize time-domain information and insufficiently conduct investigation of system-level mixed noise, presenting the inferior ability in the video-recorded era; while video denoising methods, commonly applied to RGB cameras, exhibit uncertain effectiveness owing to substantial dissimilarities in the noise models and modalities between RGB and thermal infrared images...
April 23, 2024: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
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JOURNAL ARTICLE
Jonas Håkansson, Brooke L Quinn, Abigail L Shultz, Sharon M Swartz, Aaron J Corcoran
Studying the detailed biomechanics of flying animals requires accurate three-dimensional coordinates for key anatomical landmarks. Traditionally, this relies on manually digitizing animal videos, a labor-intensive task that scales poorly with increasing framerates and numbers of cameras. Here, we present a workflow that combines deep learning-powered automatic digitization with filtering and correction of mislabeled points using quality metrics from deep learning and 3D reconstruction. We tested our workflow using a particularly challenging scenario: bat flight...
April 23, 2024: Annals of the New York Academy of Sciences
#3
JOURNAL ARTICLE
Justin Regef, Likhit Talasila, Julia Wiercigroch, R Jun Lin, Lueder A Kahrs
PURPOSE: Surface reconstructions from laryngoscopic videos have the potential to assist clinicians in diagnosing, quantifying, and monitoring airway diseases using minimally invasive techniques. However, tissue movements and deformations make these reconstructions challenging using conventional pipelines. METHODS: To facilitate such reconstructions, we developed video frame pre-filtering and featureless dense matching steps to enhance the Alicevision Meshroom SfM pipeline...
April 23, 2024: International Journal of Computer Assisted Radiology and Surgery
#4
JOURNAL ARTICLE
Jean-Baptiste Ducloyer, Frédérique Jossic, Valentine VAN Goethem, David Lebosse, Charlène Cornee, Guylène Le Meur, Mathilde Ducloyer
In living children, the use of a wide field fundus camera such as RetCam is the gold standard practice to document retinal haemorrhages in suspected cases of abusive head trauma (AHT). In case of sudden unexpected death in infancy (SUDI), child abuse must be considered as a possible cause of death and an eye examination is required. However, no example of post-mortem fundus photograph (PMFP) of retinal haemorrhages related to AHT is yet available for clinicians.We report a SUDI case, with no external traumatic lesions or limb fractures, for which prompt PMFP showed retinal haemorrhages typical of AHT: child abuse was subsequently confirmed by the forensic investigation...
April 23, 2024: International Journal of Legal Medicine
#5
JOURNAL ARTICLE
Eugene Liscio, Jihwa Lim
The purpose of this study was to examine factors affecting video analysts' decisions in marking the vertex of the head and foot point and corresponding inter-observer marking variances when conducting height analysis on individuals seen in video. Nineteen video analysts participated in an exercise at the 2022 Ontario Forensic Video Analysts' Association (OFVAA) conference where they were asked to mark the vertex of the head and a corresponding foot point of a "suspect" on extracted video frames in a variety of positions and with different headwear (no headwear, baseball cap, and hoodie)...
April 23, 2024: Journal of Forensic Sciences
#6
JOURNAL ARTICLE
Welma Pieterse, Marc De Meyer, Massimiliano Virgillio, Pia Addison
Identification of fruit fly larvae is difficult due to the limited morphological characteristics present. However, this is the stage at which fruit flies are intercepted at ports of entry through horticultural imports. Molecular tools are useful but are time-consuming and expensive compared to morphological identifications. This project aims to use available information from the literature and our own research to build a multi-entry identification key for thirteen tephritid species and species groups that are of economic concern for the European Union...
2024: ZooKeys
#7
JOURNAL ARTICLE
Júlia Margato Pazos, Ana Flávia Ribeiro Monteiro Fernandes, Edson Donizetti Verri, Guilherme Gallo Costa Gomes, Simone Cecílio Hallak Regalo, Patricia Petromilli Nordi Sasso Garcia
OBJECTIVES: This study aimed to assess the effects of different magnification systems on the angular deviations of the neck and trunk and the muscle activities of the upper back and neck during preclinical cavity preparation. METHODS: This was an experimental laboratory study, with the angular deviations from the neutral positions of the neck and trunk and the activities of the bilateral upper back (the descending and ascending trapezius) and neck (sternocleidomastoid) muscles as the dependent variables...
2024: PeerJ
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JOURNAL ARTICLE
Calebe P Mendes, Wido R Albert, Zachary Amir, Marc Ancrenaz, Eric Ash, Badrul Azhar, Henry Bernard, Jedediah Brodie, Tom Bruce, Elliot Carr, Gopalasamy Reuben Clements, Glyn Davies, Nicolas J Deere, Yoan Dinata, Christl A Donnelly, Somphot Duangchantrasiri, Gabriella Fredriksson, Benoit Goossens, Alys Granados, Andrew Hearn, Jason Hon, Tom Hughes, Patrick Jansen, Kae Kawanishi, Margaret Kinnaird, Sharon Koh, Alice Latinne, Matthew Linkie, Federica Loi, Anthony J Lynam, Erik Meijaard, Jayasilan Mohd-Azlan, Jonathan H Moore, Senthilvel K S S Nathan, Dusit Ngoprasert, Wilson Novarino, Ilyas Nursamsi, Timothy O'Brien, Robert Ong, John Payne, Dolly Priatna, D Mark Rayan, Glen Reynolds, Rustam Rustam, Sasidhran Selvadurai, Amanda Shia, Muhammad Silmi, Pablo Sinovas, Kriangsak Sribuarod, Robert Steinmetz, Matthew J Struebig, Ronglarp Sukmasuang, Sunarto Sunarto, Tarmizi Tarmizi, Arjun Thapa, Carl Traeholt, Oliver R Wearn, Hariyo B Wibisono, Andreas Wilting, Seth Timothy Wong, Siew Te Wong, Jettie Word, Wen Xuan Chiok, Zainal Zahari Zainuddin, Matthew Scott Luskin
Information on tropical Asian vertebrates has traditionally been sparse, particularly when it comes to cryptic species inhabiting the dense forests of the region. Vertebrate populations are declining globally due to land-use change and hunting, the latter frequently referred as "defaunation." This is especially true in tropical Asia where there is extensive land-use change and high human densities. Robust monitoring requires that large volumes of vertebrate population data be made available for use by the scientific and applied communities...
April 22, 2024: Ecology
#9
JOURNAL ARTICLE
Michel Hesse, Florian Dupont, Nizar Mourad, Pavel Babczenko, Gwen Beaurin, Daela Xhema, Eliano Bonaccorsi-Riani, François Jamar, Renaud Lhommel
BACKGROUND: Large field of view CZT SPECT cameras with a ring geometry are available for some years now. Thanks to their good sensitivity and high temporal resolution, general dynamic SPECT imaging may be performed more easily, without resorting to dedicated systems. To evaluate the dynamic SPECT imaging by such cameras, we have performed an in vivo pilot study to analyze the kidney function of a pig and compare the results to standard dynamic planar imaging by a conventional gamma camera...
April 22, 2024: BMC Medical Imaging
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JOURNAL ARTICLE
John Stamford, Seher Bahar Aciksoz, Tracy Lawson
Hyperspectral imaging is a remote sensing technique that enables remote, noninvasive measurement of plant traits. Here, we outline the procedures for camera setup, scanning, and calibration, along with the acquisition of black and white reference materials, which are the key steps in collecting hyperspectral imagery. We also discuss the development of predictive models such as partial least-squares regression, using both large and small datasets, which are used to predict plant traits from hyperspectral data...
2024: Methods in Molecular Biology
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JOURNAL ARTICLE
John Stamford, Piotr Kasznicki, Tracy Lawson
This chapter provides a methodology for evaluating plant health and leaf characteristics using spectral reflectance. It provides a step-by-step guide to using spectrometers for high-resolution point measurements of leaf spectral reflectance and multispectral imaging for capturing spatial data, emphasizing the importance of consistent measurement conditions. The chapter further explores the intricacies of multispectral imaging, including calibration, data collection, and image processing. Finally, this chapter delves into the application of various spectral indices for the quantification of key traits such as pigment content, the status of the xanthophyll cycle, water content, and how to identify spectral regions of interest for further research and development...
2024: Methods in Molecular Biology
#12
JOURNAL ARTICLE
Mengjie Fan, John Stamford, Tracy Lawson
Infrared thermography offers a rapid, noninvasive method for measuring plant temperature, which provides a proxy for stomatal conductance and plant water status and can therefore be used as an index for plant stress. Thermal imaging can provide an efficient method for high-throughput screening of large numbers of plants. This chapter provides guidelines for using thermal imaging equipment and illustrative methodologies, coupled with essential considerations, to access plant physiological processes.
2024: Methods in Molecular Biology
#13
JOURNAL ARTICLE
Melania Mesas Gómez, Esther Julián, Lara Armengou, Maria Isabel Pividori
Recent advances have significantly enhanced the use of smartphone devices for medical diagnostics. This study uses high-resolution cameras in mobile devices to capture and process bioassay images, enabling the quantification of diverse biomarkers across a range of diagnostic tests conducted on 96-well microplates. The study evaluates the effectiveness of this technology through protein quantification techniques and immunoassays that generate colorimetric responses at specific wavelengths. It includes the assessment of bicinchoninic acid and Bradford protein quantification methods, alongside a conventional immunoassay for detecting mare antibodies in colostrum to monitor foal immunodeficiencies...
April 21, 2024: Talanta
#14
JOURNAL ARTICLE
Maria Sarah S Bovenberg, Paige Hoyer Williams, Leonard H Goldberg
Precise wound approximation during cutaneous suturing is of vital importance for optimal closure and long-term scar outcomes. Utilizing smartphone camera technology as a quality-control checkpoint for objective evaluation allows the dermatologic surgeon to scrutinize the wound edges and refine their surgical technique to improve scar outcomes.
March 2024: Cutis; Cutaneous Medicine for the Practitioner
#15
JOURNAL ARTICLE
Abdul Aziz Hulleck, Aamna Alshehhi, Marwan El Rich, Raviha Khan, Rateb Katmah, Mahdi Mohseni, Navid Arjmand, Kinda Khalaf
Evaluation of human gait through smartphone-based pose estimation algorithms provides an attractive alternative to costly lab-bound instrumented assessment and offers a paradigm shift with real time gait capture for clinical assessment. Systems based on smart phones, such as OpenPose and BlazePose have demonstrated potential for virtual motion assessment but still lack the accuracy and repeatability standards required for clinical viability. Seq2seq architecture offers an alternative solution to conventional deep learning techniques for predicting joint kinematics during gait...
April 22, 2024: IEEE Transactions on Neural Systems and Rehabilitation Engineering
#16
JOURNAL ARTICLE
Debae Alzoubi, Wade Rich, Matthew A Reilly
The biomechanical properties of the ocular lens are essential to its function as a variable power optical element. These properties change dramatically with age in the human lens, resulting in a loss of near vision called presbyopia. However, the mechanisms of these changes remain unknown. Lens compression offers a relatively simple method for assessing the lens' biomechanical stiffness in a qualitative sense and, when coupled with appropriate analytical techniques, can help quantify biomechanical properties...
April 5, 2024: Journal of Visualized Experiments: JoVE
#17
JOURNAL ARTICLE
Xiaoyi Jiang, Kexin Gan, Yuxin Wang, Chao Tao, Xiaojun Liu, Jie Yuan, Zhibin Jin
Conventional B-mode ultrasound imaging has difficulty in delineating homogeneous soft tissues with similar acoustic impedances, as the reflectivity depends on the acoustic impedance at the interface. As a quantitative imaging biomarker sensitive to alteration of biomechanical properties, speed-of-sound (SoS) holds promising potential for tissue and disease differentiation such as delineation of different breast tissue types with similar acoustic impedance. Compared to two-dimensional (2D) SoS images, three-dimensional (3D) volumetric SoS images achieved through a full-angle ultrasound scan can reveal more intricate morphological structures of tissues; however, they generally require a ring transducer...
April 22, 2024: Ultrasonic Imaging
#18
JOURNAL ARTICLE
Mohd Luqman, S Moied Ahmed, Amal Shaharyar, Raihan Mannan
Introduction Indirect laryngoscopy has become a widely accepted method for learning the techniques of airway management. The incorporation of small, less expensive, and yet more reliable video cameras in laryngoscopes has given the process of laryngoscopy and intubation a big leap. The King Vision video laryngoscope (Medline Industries, USA) has demonstrated promise in several settings while the Linscope video laryngoscope (Centrum, Turkey) is a newly launched device and no literature is available to the best of our knowledge...
March 2024: Curēus
#19
REVIEW
H R Tizhoosh, Liron Pantanowitz
Pathology images of histopathology can be acquired from camera-mounted microscopes or whole-slide scanners. Utilizing similarity calculations to match patients based on these images holds significant potential in research and clinical contexts. Recent advancements in search technologies allow for implicit quantification of tissue morphology across diverse primary sites, facilitating comparisons, and enabling inferences about diagnosis, and potentially prognosis, and predictions for new patients when compared against a curated database of diagnosed and treated cases...
December 2024: Journal of Pathology Informatics
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JOURNAL ARTICLE
Ana Carolina Prado Sousa, Adriane Suzin, Vinícius da Silva Rodrigues, Laís Miguel Rezende, Rodrigo da Costa Maia, Raíssa Brauner Kamla Vieira, Matias Pablo Juan Szabó
Wild boars or feral pigs are classified by the Brazilian Institute for the Environment and Renewable Resources (IBAMA) in "Category I of invasive exotic species". They cause economic losses, harm the environment, serve as hosts and reservoirs for several zoonotic disease agents, and provide a blood meal for tick species that act as vectors for zoonotic diseases. The objective of this study was to identify tick species on wild boars, assess host-seeking ticks in the related environment, and identify other potential tick hosts coexisting with wild boars on a farm located in the state of Minas Gerais, southeastern Brazil...
May 2024: Veterinary Parasitology (Amsterdam)
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