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40 results for “Visual Localization”
Figure 15 Periglischrus paravargasi, male. A in DNA barcoding, visual-guide resource, new localities and host associations of genus Periglischrus Oudemans, 1902 (Acari: Mesostigmata, Spinturnicidae) from Minas Gerais, Brazil
Figure 15 Periglischrus paravargasi, male. A – General view; B – Dorsal view with proteronotal setae (Pn1–Pn5) and poststigmal seta (Pst) indicated; C – Ventral view with sternogenital setaeSt(1–St4) and genital seta (Sg) indicated; D – Ventral setae on legs I and II with details; E Details ventral setae on leg I; F – Details ventral setae on leg II; G – Coxa I with pv anddvsetae, indicated in red arrow; H – Femur–tibia I with proximal adsetae, indicated; I – Coxa II with posterolateral setapl () indicated; J – Femur II, proximaladandpdsetae, indicated; K – Proximal adandpd on tarsus III, indicated; L – Femur IV, proximaladandpd setae, indicated; M – Genu IV, proximaladandpd setae, indicated; N – proximal adandpd on tarsus IV, indicated. Scale bars: A = 200 µm, B–D and H = 100 µm, E–G, I–N = 50 µm.
MSDI: a geo-tagged drone imagery for absolute visual localization
<p>The MSDI (Manchester Surface Drone Imagery) is a geo-imagery registration dataset. <br> The dataset consists of <br> a. 446 downward-facing drone images.<br> b. 89 forward-facing(45-degree) drone images.<br> c. 64 forward-facing (0-degree) drone images. <br> d. parameter matrix of drone camera and transformation matrix.<br> e. checkerboard images for camera calibration.</p> <p>This dataset is collected by Mochuan Zhan for his MSC project: Registration of UAV Imagery to Aerial and Satellite Imagery<br> in the University of Manchester (2021/9 - 2022/9) which is supervised by Dr.Terence Patrick Morley. This project aims at <br> developing a system that could perform efficient UAV visual localization through image registration based on local feature <br> detectors and the technique of high-throughput computing.</p> <p>Notice:<br> The corresponding satellite image from Google Map and Bing Map could be obtained by my program, Link: </p> <pre>https://doi.org/10.5281/zenodo.6977652</pre> <p>A Ground Control Point (GCP) selector is provided for user to select GCP and create file with small effort.<br> By registrating corresponding images, users could evaluate the performance of their registration techniques.</p> <p>The Imagery contains images of 8 Areas in Manchester:<br> - Manchester Aquatics Center 80<br> - Manchester ASDA 76<br> - Manchester Bussiness School 37<br> - Manchester Energy Center 71<br> - Manchester Holy Name Church 58<br> - Manchester Hulme Park 47<br> - Manchester Hulme Part(0-degree) 64<br> - Manchester Hulme Part(45-degree) 89<br> - Manchester Metropolitan university 29 <br> - Manchester Museum 48</p> <p>Device Information:<br> - Drone brand: Parrot<br> - Drone model: Parrot Anafi</p> <p>Software Information:<br> - Pix4DCapture<br> - FreeFlight6</p> <p>Flight parameters:<br> - Height 100m<br> - Speed 5m/s<br> - overlap low</p> <p><br> </p>
Genetic modification of the bee parasite Crithidia bombi for improved visualization and protein localization
<p><em>Crithidia bombi </em>is a trypanosomatid parasite that infects several species of bumble bees (<em>Bombus</em> spp.), by adhering to their intestinal tract. <em>Crithidia bombi </em>infection impairs learning and reduces survival of workers and overwintering queens. Although there is extensive research on the ecology of this host-pathogen system, we understand far less about the mechanisms that mediate internal infection dynamics. <em>Crithidia bombi</em> infects hosts by attaching to the hindgut via the flagellum, and one previous study found that a nectar secondary compound removed the flagellum, preventing attachment. However, approaches that allow more detailed observation of parasite attachment and growth would allow us to better understand factors mediating this host-pathogen relationship. We established techniques for genetic manipulation and visualization of cultured <em>C. bombi.</em> Using constructs established for <em>Crithidia fasciculata, </em>we successfully generated <em>C. bombi </em>cells expressing ectopic fluorescent transgenes using two different selectable markers. To our knowledge, this is the first genetic modification of this species. We also introduced constructs that label the mitochondrion and nucleus of the parasite, showing that subcellular targeting signals can function across parasite species to highlight specific organelles. Finally, we visualized fluorescently tagged parasites <em>in vitro</em> in both their swimming and attached forms, and <em>in vivo </em>in bumble bee (<em>Bombus impatiens</em>) hosts. Expanding our cell and molecular toolkit for <em>C. bombi </em>will help us better understand how factors such as host diet, immune system, and physiology mediate outcomes of infection by these common parasites.</p>
Bilateral hearing impaired children assessment of horizontal auditory localization accuracy in a virtual visual environment with free head movement
<p>Twenty-two hearing-impaired children (13 males and 9 females, mean age: 10.45 years, standard deviation 3.13 years) participated in an auditory localization experiment in a virtual visual environment. We investigated the contribution of head movements to localization along the interaural plane in absence of motor constraints and visual cues on a virtual scene, experienced by individuals wearing a head-mounted display while listening to stimuli coming from a circular loudspeaker array. Each session included multiple test conditions. In each condition, the stimulus was presented from loudspeaker positions that were randomly balanced across a sequence of 13 x 5 = 65 trials. Each participant performed the task first with both devices turned on ("On-On"), then with one device (either the left or right one) turned on and one off ("On-Off"), and finally with both devices turned off ("Off-Off"). The On-On condition was presented first during each test session because it provided an everyday listening context participants were accustomed to, and consequently confident with. The third condition was omitted if a patient's pure tone average threshold was above the stimulus level used for the test in the frequency range [0.5-4] kHz. Depending on this threshold, nine Bi HA listeners attended also the Off-Off condition. Two Bi HA listeners were unable to attend the On-Off test condition either, since their session had to be stopped as early as they reported annoyance or fatigue to the experimenter. Children were affected by non-syndromic hearing loss ("GEN NO SDR") in 8 cases (6 GJB2 gene mutations, 2 other gene mutations), syndromic hearing loss ("SDR") in 4 (2 Usher syndromes, 1 chromosomal instability, 1 Waardenburg syndrome), and 1 enlarged vestibular aqueduct (inner ear malformation, "IEM"). Other causes of hearing loss ("Other") were congenital cytomegalovirus infection in 2 cases, chemotherapy with platinum derivatives for neuroblastoma in 2, preterm delivery in 1, and prolonged neonatal intensive care unit stay in 1 case. The cause was not identified ("ND") in 3 cases. All participants were right-handed and had no diagnosis of motor impairment. Reported are: the participant's anonymous id ("Participant"), the age ("Age"), the cause of hearing impairment ("MacroCause"), the years of experience with each device ("Experience DX", "Experience SX"), the left and right pure-tone individual hearing thresholds at 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz, without and with devices ("Threshold w/o 500 DX" is the right threshold at 500 Hz without devices, and the others are named accordingly), the group ("Group", an example is "Bi CI On-Off" identifying the group of listeners with two cochlear implants, one turned on and the other turned off, and the others are named accordingly), the test condition ("Condition", an example is "NOICSX_ICDX", identifying the listening condition with the left cochlear implant turned off and the right cochlear implant turned on, and the others are named accordingly), the target ("Target", angle in sexagesimal degrees), the signed error ("Signed_error", the difference between the target angle and the pointed angle in sexagesimal degrees), the unsigned error ("Unsigned_error", the absolute difference between the target angle and the pointed angle in sexagesimal degrees), the difference between the target and head orientation angle in the moment when the target was hit ("Head_rotation", in sexagesimal degrees), the head covered distance during a single trial ("Head_distance", in meters). Here are presented only sessions including the complete set of 65 trials, except seven sessions attended by Bi-CI listeners, each missing one trial (six in the On-Off condition and one in the On-On condition) that was not recorded due to a technical problem.</p>
Genetic modification of the bee parasite Crithidia bombi for improved visualization and protein localization
Open the record for dataset details and reuse information.
Figure 1 in DNA barcoding, visual-guide resource, new localities and host associations of genus Periglischrus Oudemans, 1902 (Acari: Mesostigmata, Spinturnicidae) from Minas Gerais, Brazil
Figure 1 Geographical distribution of sampling localities ofPeriglischrus spp.
Visualizing local fast ionic conduction pathways in nanocrystalline lanthanum manganite by isotope exchange-atom probe tomography - dataset
<p>Raw data for atom probe tomography 2D elemental reconstructions of 18O-exchanged La0.8Sr0.2MnO3 thin films. LSM thin films were deposited by large-area PLD (PVD Systems – PLD 5000) using a 248 nm KrF excimer laser (Lambda Physics – COMPex PRO 205). The layers were deposited on Al<sub>2</sub>O<sub>3</sub> (0001) single crystal substrate (Crystec GmbH). A thin barrier layer of Ce<sub>0.8</sub>Sm<sub>0.2</sub>O<sub>1.9</sub> (SDC) was deposited before the LSM film in order to avoid cationic intermixing at the interface. Both layers were deposited at 700 °C, under an oxygen pressure of 2.6 × 10<sup>−2</sup> mbar, target–substrate distance of 95 mm, laser fluency ≈1.2 J cm<sup>−2</sup> and 5 Hz of laser frequency. The thickness of LSM and SDC layers deposited was ≈45 nm and ≈35 nm, respectively, as measured by spectroscopy ellipsometry (UVISEL, Horiba scientific).The nominal oxygen exchange temperature and time were 550 °C and 1 h and 40 min, respectively. Instrument Cameca LEAP 4000X Si. APT performed at 45.5 K using a 30 pJ laser energy and 500 kHz pulse rate. The flight path length was 90 mm and the ion detection rate was set to 5 ions per 1000 pulses, resulting in a bias range of 5000–7400 V during the data collection. Reconstructions were generated in Cameca's IVAS 3.6.18 software. A systematic energy deficit correction was employed to improve the mass spectral resolution.</p>
Sound source localization with varying amount of visual information in virtual reality [dataset]
<p>This is the dataset that belongs to the publication "Sound source localization with varying amount of visual information in virtual reality".</p> <p>-The file "AVIL_lab.fbx" contains the visual model of the loudspeaker environment that was used throughout the experiment.</p> <p>-The file "localization_task_instruction_final.docx" contains the information sheet that was handed to the subjects before the experiment.</p> <p>-The file "localizationData_public.xlsx" contains the responses from the subjects (column B). The responses in azimuth and elevation (columns F&G) are corrected for the pointing bias (columns H&I).</p>
Data for GECCO2023 Paper "Pareto Local Optimal Solutions Networks with Compression, Enhanced Visualization and Expressiveness"
<p><strong>Data for Paper "Pareto Local Optimal Solutions Networks with Compression, Enhanced Visualization and Expressiveness"</strong></p> <ul> <li><strong>instances.tar.xz</strong> contains 𝜌mnk-landscape instances</li> <li><strong>metrics.csv</strong> contains the (C)PLOS-net metric-values</li> <li><strong>performance.csv</strong> contains the performance of the different algorithms on each instance</li> <li><strong>merged.csv</strong> contains the merged data from the 2 csv files above</li> </ul> <p><strong>Reference</strong></p> <p>Arnaud Liefooghe, Gabriela Ochoa, Sébastien Verel, and Bilel Derbel. 2023. <strong>Pareto Local Optimal Solutions Networks with Compression, Enhanced Visualization and Expressiveness</strong>. In Genetic and Evolutionary Computation Conference (GECCO ’23), July 15–19, 2023, Lisbon, Portugal. ACM, New York, NY, USA, 9 pages. <a href="https://doi.org/10.1145/3583131.3590474">https://doi.org/10.1145/3583131.3590474</a></p> <p><strong>Abstract</strong></p> <p>The structure of local optima in multi-objective combinatorial optimization and their impact on algorithm performance are not yet properly understood. In this paper, we are interested in the representation of multi-objective landscapes and their multi-modality. More specifically, we revise and extend the network of Pareto local optimal solutions (PLOS-net), inspired by the well-established local optima network from single-objective optimization. We first define a compressed PLOS-net which allows us to enhance its perception while preserving the important notion of connectedness between local optima. We then study an alternative visualization of the (compressed) PLOS-net that focuses on good-quality solutions, improves the distinction between connected components in the network, and generalizes well to landscapes with more than 2 objectives. We finally define a number of network metrics that characterize the PLOS-net, some of them being strongly correlated with search performance. We visualize and experiment with small-size multi-objective nk-landscapes, and we disclose the effect of PLOS-net metrics against well-established multi-objective local search and evolutionary algorithms.</p>
Environmental Localization Mapping and Guidance for Visual Prosthesis Users
ClinicalTrials.gov study NCT04359108. IPD Sharing: NO. Countries: 1. Publications: 1.
Data related to the manuscript "Visualizing endogenous Rho activity with an improved localization-based, genetically encoded biosensor"
<p>These are the data that are related to the manuscript "Visualizing endogenous Rho activity with an improved localization-based, genetically encoded biosensor" by </p> <p>Eike K. Mahlandt<sup>1,*</sup>, Janine J. G. Arts<sup>1,2</sup>,Werner J. van der Meer<sup>1</sup>, Franka H. van der Linden<sup>1</sup>, Simon Tol<sup>2</sup>, Jaap D. van Buul<sup>1,2</sup>, Theodorus W. J. Gadella Jr.<sup>1</sup>, Joachim Goedhart<sup>1,*</sup></p> <p><sup>1</sup> Swammerdam Institute for Life Sciences, Section of Molecular Cytology, van Leeuwenhoek Centre for Advanced Microscopy, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands</p> <p><sup>2</sup> Molecular Cell Biology Lab at Dept. Molecular Hematology, Sanquin Research and Landsteiner Laboratory, Amsterdam, The Netherlands</p>
Data from: Bumblebee visual allometry results in locally improved resolution and globally improved sensitivity
Open the record for dataset details and reuse information.
AVECL-UMONS DATABASE FOR AUDIO-VISUAL EVENT CLASSIFICATION AND LOCALIZATION
<p>AVECL-UMONS is a dataset for audio-visual event classification and localization in the context of office environments. The dataset is composed of 11 event classes recorded at several realistic positions in two different rooms. The dataset comprises two types of sequences according to the number of events in the sequence. 2662 unilabel sequences and 2724 multilabel sequences are recorded corresponding to a total of 5.24 hours.</p> <p>The dataset is complementary to the <em>SECL-UMons </em>dataset<em> </em>(also available on zenodo). The <em>SECL-UMons</em> dataset includes recordings made with a microphone array while <em>AVECL-UMONS</em> includes recordings made with 4 webcams.</p>
Autonomous Aerial Inspection using Visual-Inertial Robust Localization and Mapping
<p>This video illustrates the content of the paper referenced below.<br> <br> <strong>Reference:</strong><br> Lucas Teixeira, Ignacio Alzugaray and Margarita Chli, "Autonomous Aerial Inspection using Visual-Inertial Robust Localization and Mapping", in Proceedings of the International Conference on Field and Service Robotics (FSR), 2017.</p> <p><strong>Abstract:</strong></p> <p>With recent technological breakthroughs bringing fully autonomous inspection using small Unmanned Aerial Vehicles (UAVs) closer to reality, the community of Robotics has actively been developing the real-time perception capabilities able to run onboard such constraint platforms. Despite good progress, realistic deployment of autonomous UAVs in GPS-denied environments is still rudimentary. In this work, we propose a novel system to generate a collision-free path towards a user-specified inspection direction for a small UAV using monocular-inertial sensing only and performing all computation onboard. Estimating both the previously unknown scene and the UAV’s trajectory on the fly, this system is evaluated on real experiments outdoors in the presence of wind and poorly structured environments. Our analysis reveals the shortcomings of using sparse feature maps for planning, highlighting the importance of robust dense scene estimation proposed here.</p>
Data from: Contributions of local speech encoding and functional connectivity to audio-visual speech perception
Seeing a speaker's face enhances speech intelligibility in adverse environments. We investigated the underlying network mechanisms by quantifying local speech representations and directed connectivity in MEG data obtained while human participants listened to speech of varying acoustic SNR and visual context. During high acoustic SNR speech encoding by temporally entrained brain activity was strong in temporal and inferior frontal cortex, while during low SNR strong entrainment emerged in premotor and superior frontal cortex. These changes in local encoding were accompanied by changes in directed connectivity along the ventral stream and the auditory-premotor axis. Importantly, the behavioral benefit arising from seeing the speaker's face was not predicted by changes in local encoding but rather by enhanced functional connectivity between temporal and inferior frontal cortex. Our results demonstrate a role of auditory-frontal interactions in visual speech representations and suggest that functional connectivity along the ventral pathway facilitates speech comprehension in multisensory environments.
Audio-visual sound source localization and separation
<p>CVPR 2021 tutorial</p>
Data from: Contributions of local speech encoding and functional connectivity to audio-visual speech perception
Open the record for dataset details and reuse information.
The local cellular response to Human Papillomavirus focuses on basal layer restoration as visualized in situ by specific cellular neighborhoods near infected cells
GEO Series GSE311892. Homo sapiens. 36 samples. Type: Other.
Evaluation of the Interest of the Medical Device Called "Fluobeam" in the Localization, Visualization of the Parathyroid Glands for Patients With Mild Primary Hyperparathyroidism
ClinicalTrials.gov study NCT03643081. IPD Sharing: NO. Countries: 1. Publications: 0.
Comparison of Physical Versus Visual Distraction in the Reduction of Pain During Local Anesthesia
ClinicalTrials.gov study NCT04595721. IPD Sharing: NO. Countries: 0. Publications: 0.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.