Academic literature on the topic 'Histogram of Averaged Time Surfaces'

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Journal articles on the topic "Histogram of Averaged Time Surfaces"

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Böhm, E., V. Banzon, E. D’Acunzo, F. D’Ortenzio, and R. Santoleri. "Adriatic Sea surface temperature and ocean colour variability during the MFSPP." Annales Geophysicae 21, no. 1 (2003): 137–49. http://dx.doi.org/10.5194/angeo-21-137-2003.

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Abstract. Two years and six months of night-time Advanced Very High Resolution Radiometer (AVHRR) sea surface temperature (SST) and daytime Sea viewing Wide Field of view Sensor (SeaWiFS) data collected during the MFSPP have been used to examine spatial and temporal variability of SST and chlorophyll (Chl) in the Adriatic Sea. Flows along the Albanian and the Italian coasts can be distinguished year-round in the monthly averaged Chl but only in the colder months in the monthly averaged SST’s. The Chl monthly-averaged fields supply less information on circulation features away from coastal boun
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Salgadoe, Arachchige, Andrew Robson, David Lamb, and Derek Schneider. "A Non-Reference Temperature Histogram Method for Determining Tc from Ground-Based Thermal Imagery of Orchard Tree Canopies." Remote Sensing 11, no. 6 (2019): 714. http://dx.doi.org/10.3390/rs11060714.

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Obtaining average canopy temperature (Tc) by thresholding canopy pixels from on-ground thermal imagery has historically been undertaken using ‘wet’ and ‘dry’ reference surfaces in the field (reference temperature thresholding). However, this method is extremely time inefficient and can suffer inaccuracies if the surfaces are non-standardised or unable to stabilise with the environment. The research presented in this paper evaluates non-reference techniques to obtain average canopy temperature (Tc) from thermal imagery of avocado trees, both for the shaded side and sunlit side, without the need
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Sun, Deng, Liu, and Deng. "Combination of Spatial and Frequency Domains for Floating Object Detection on Complex Water Surfaces." Applied Sciences 9, no. 23 (2019): 5220. http://dx.doi.org/10.3390/app9235220.

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In order to address the problems of various interference factors and small sample acquisition in surface floating object detection, an object detection algorithm combining spatial and frequency domains is proposed. Firstly, a rough texture detection is performed in a spatial domain. A Fused Histogram of Oriented Gradient (FHOG) is combined with a Gray Level Co-occurrence Matrix (GLCM) to describe global and local information of floating objects, and sliding windows are classified by Support Vector Machines (SVM) with new texture features. Then, a novel frequency-based saliency detection method
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PINARBAŞI, Aysun, and Funda CENGİZ ÇALLIOĞLU. "Electrospinning of PVP Nanofibers and Optimization with Taguchi Experimental Design." Süleyman Demirel Üniversitesi Fen Edebiyat Fakültesi Fen Dergisi 17, no. 2 (2022): 478–95. http://dx.doi.org/10.29233/sdufeffd.1087764.

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The aim of this study is the determination of optimum process parameters which will provide the finest and the most uniform electrospun Polyvinylpyrrolidone (PVP) based nanofibers with Taguchi experimental design. For the designed experimental setup, parameters (solvent type, polymer concentration, voltage, distance between the electrodes, solution feed rate and humidity) were used which effect the electospinning process significantly. For this purpose, the appropriate orthogonal array was selected to determine the factors and levels at Taguchi experimental design application. The experimental
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He, Ci, Rong Lai, Jin Sun, et al. "Adaptive High-Precision 3D Reconstruction of Highly Reflective Mechanical Parts Based on Optimization of Exposure Time and Projection Intensity." Journal of Imaging 11, no. 5 (2025): 149. https://doi.org/10.3390/jimaging11050149.

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This article is used to reconstruct mechanical parts with highly reflective surfaces. Three-dimensional reconstruction based on Phase Measuring Profilometry (PMP) is a key technology in non-contact optical measurement and is widely applied in the intelligent inspection of mechanical components. Due to the high reflectivity of metallic parts, direct utilization of the captured high-dynamic-range images often results in significant information loss in the oversaturated areas and excessive noise in the dark regions, leading to geometric defects and reduced accuracy in the reconstructed point clou
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Liu, Shan, Guanghong Gong, Luhao Xiao, Mengyuan Sun, and Zhengliang Zhu. "Study of rapid face modeling technology based on Kinect." International Journal of Modeling, Simulation, and Scientific Computing 09, no. 01 (2018): 1750054. http://dx.doi.org/10.1142/s1793962317500544.

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This paper improves the algorithm of point cloud filtering and registration in 3D modeling, aiming for smaller sampling error and shorter processing time of point cloud data. Based on collaborative sampling among several Kinect devices, we analyze the deficiency of current filtering algorithm, and use a novel method of point cloud filtering. Meanwhile, we use Fast Point Feature Histogram (FPFH) algorithm for feature extraction and point cloud registration. Compared with the aligning process using Point Feature Histograms (PFH), it only takes 9[Formula: see text]min when the number of points is
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Vaitiekūnas, Mantas, Darius Jegelevičius, Andrius Sakalauskas, and Simonas Grybauskas. "Automatic Method for Bone Segmentation in Cone Beam Computed Tomography Data Set." Applied Sciences 10, no. 1 (2019): 236. http://dx.doi.org/10.3390/app10010236.

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Due to technical aspects of Cone Beam Computed Tomography (CBCT), the automatic methods for bone segmentation are not widely used in the clinical practice of endodontics, orthodontics, oral and maxillofacial surgery. The aim of this study was to evaluate method’s accuracy for bone segmentation in CBCT data sets. The sliding three dimensional (3D) window, histogram filter and Otsu’s method were used to implement the automatic segmentation. The results of automatic segmentation were compared with the results of segmentation performed by an experienced oral and maxillofacial surgeon. Twenty patie
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Devenport, William J., and Roger L. Simpson. "Time-depeiident and time-averaged turbulence structure near the nose of a wing-body junction." Journal of Fluid Mechanics 210 (January 1990): 23–55. http://dx.doi.org/10.1017/s0022112090001215.

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The behaviour of a turbulent boundary layer on a flat surface as it encounters the nose of a cylindrical wing mounted normal to that surface is being investigated. A three-component laser anemometer has been developed to measure this highly turbulent three-dimensional flow. Measurements of all the non-zero mean-velocity and Reynolds-stress components have been made with this instrument in the plane of symmetry upstream of the wing. These data have been used to estimate some of the component terms of the turbulence kinetic energy equation. Histograms of velocity fluctuations and short-time cros
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Keller, Clifford H., and Terry T. Takahashi. "Representation of Temporal Features of Complex Sounds by the Discharge Patterns of Neurons in the Owl's Inferior Colliculus." Journal of Neurophysiology 84, no. 5 (2000): 2638–50. http://dx.doi.org/10.1152/jn.2000.84.5.2638.

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The spiking pattern evoked in cells of the owl's inferior colliculus by repeated presentation of the same broadband noise was found to be highly reproducible and synchronized with the temporal features of the noise stimulus. The pattern remained largely unchanged when the stimulus was presented from spatial loci that evoke similar average firing rates. To better understand this patterning, we computed the pre-event stimulus ensemble (PESE)—the average of the stimuli that preceded each spike. Computing the PESE by averaging the pressure waveforms produced a noisy, featureless trace, suggesting
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Visutsak, Porawat. "Marching Cubes and Histogram Pyramids for 3D Medical Visualization." Journal of Imaging 6, no. 9 (2020): 88. http://dx.doi.org/10.3390/jimaging6090088.

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This paper aims to implement histogram pyramids with marching cubes method for 3D medical volumetric rendering. The histogram pyramids are used for feature extraction by segmenting the image into the hierarchical order like the pyramid shape. The histogram pyramids can decrease the number of sparse matrixes that will occur during voxel manipulation. The important feature of the histogram pyramids is the direction of segments in the image. Then this feature will be used for connecting pixels (2D) to form up voxel (3D) during marching cubes implementation. The proposed method is fast and easy to
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Dissertations / Theses on the topic "Histogram of Averaged Time Surfaces"

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Trogadas, Giorgos, and Larissa Ekonoja. "The effect of noise filters on DVS event streams : Examining background activity filters on neuromorphic event streams." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302514.

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Image classification using data from neuromorphic vision sensors is a challenging task that affects the use of dynamic vision sensor cameras in real- world environments. One impeding factor is noise in the neuromorphic event stream, which is often generated by the dynamic vision sensors themselves. This means that effective noise filtration is key to successful use of event- based data streams in real-world applications. In this paper we harness two feature representations of neuromorphic vision data in order to apply conventional frame-based image tools on the neuromorphic event stream. We us
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Book chapters on the topic "Histogram of Averaged Time Surfaces"

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Wanninkhof, Rik, Scott C. Doney, Taro Takahashi, and Wade R. Mcgillis. "The Effect of Using Time-Averaged Winds on Regional Air-Sea CO2Fluxes." In Gas Transfer at Water Surfaces. American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm127p0351.

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Goldman, N., and R. J. Saykally. "Elucidating the role of many-body forces in liquid water. I. Simulations of water clusters on the VRT(ASP-W) potential surfaces." In Quantum Monte Carlo. Oxford University PressNew York, NY, 2007. http://dx.doi.org/10.1093/oso/9780195310108.003.00152.

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Abstract In the quest for a quantitative simulation of liquid water it appears the potential energy of the interaction of water molecules converges very rapidly and may be described adequately by only two- and three-body terms. Measurements of vibration-rotation tunneling (VRT) splittings for water dimers have provided data for fitting an anisotropic site potential with Woermer dispersion (ASPW) to provide a series of highly detailed potential energy surfaces. The expressions for these surfaces include terms corresponding to electrostatic interaction, two-body exchange repulsion, two-body disp
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Conference papers on the topic "Histogram of Averaged Time Surfaces"

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Dolske, Donald A., and John D. Meakin. "Acid Deposition Impacts on Historic Bronze and Marble Statuary and Monuments at Gettysburg, Pennsylvania." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91152.

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Abstract One of the largest single collections of outdoor sculpture and monuments in the United States is found at Gettysburg National Military Park, Pennsylvania (GETT). GETT receives relatively acidic rainfall, as the median pH is 4.2, and rain events with pH as low as 3.5 are not uncommon. The apparently accelerating deterioration of bronze and marble monuments and statuary has become an important National Park Service management concern. To assess the present status of monument deterioration and its relationship to airborne pollutants and rainfall acidity, a research project was conducted
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Sironi, Amos, Manuele Brambilla, Nicolas Bourdis, Xavier Lagorce, and Ryad Benosman. "HATS: Histograms of Averaged Time Surfaces for Robust Event-Based Object Classification." In 2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR). IEEE, 2018. http://dx.doi.org/10.1109/cvpr.2018.00186.

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Lukomski, Michal, and Leszek Krzemien. "Automated analysis of art object surfaces using time-averaged digital speckle pattern interferometry." In SPIE Optical Metrology 2013, edited by Luca Pezzati and Piotr Targowski. SPIE, 2013. http://dx.doi.org/10.1117/12.2020476.

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Bakut, Peter, and Valery Mandrosov. "Correlation and coherence properties of time-averaged speckle patterns for light fields scattered by rough surfaces." In Speckle06: Speckles, From Grains to Flowers, edited by Pierre Slangen and Christine Cerruti. SPIE, 2006. http://dx.doi.org/10.1117/12.695990.

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Kreitmeier, F. "A New Time-Averaging Procedure for Compressible, Unsteady Turbulent Flows." In ASME 1987 International Gas Turbine Conference and Exhibition. American Society of Mechanical Engineers, 1987. http://dx.doi.org/10.1115/87-gt-83.

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The computations done at present for turbulent flow fields use either time-averaged (Reynolds) or time-and-mass-averaged (Favre) quantities, together with time-averaged fluctuating terms (FTs). Large numbers of these FTs, which are derived from the time-averaged balance equations, occur whenever all relevant time-averaged balance equations are being used and all quantities, including the transport quantities, must be considered as turbulent. The FTs require a great deal of experimental and theoretical work — for example, for closing time-averaged balance equations using familiar heuristic meth
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Chochua, Gocha, and Wei Shyy. "Computational Modeling of Turbulent Flows Over Rough Surfaces." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41063.

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Turbulent flows over rough surfaces are often encountered in nature and engineering practices and are often difficult to analyze. In this study, combined modeling and computational techniques is involved to investigate such flows over a surface covered with a large-scale roughness pattern. A simplified empirical engineering model is validated by taking area average of the flow field data over the surface. The approach can interpret fluid physics based on the empirical correlation. The area-averaged mean momentum transport resulting from the wall-normal time-averaged velocity component is found
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Dunn, M. G., J. Kim, K. C. Civinskas, and R. J. Boyle. "Time-Averaged Heat Transfer and Pressure Measurements and Comparison With Prediction for a Two-Stage Turbine." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-194.

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Time-averaged Stanton number and surface-pressure distributions are reported for the first-stage vane row and the first-stage blade row of the Rocketdyne Space Shuttle Main Engine two-stage fuel-side turbine. These measurements were made at 10%, 50%, and 90% span on both the pressure and suction surfaces of the component. Stanton-number distributions are also reported for the second-stage vane at 50% span. A shock tube is used as a short-duration source of heated and pressurized air to which the turbine is subjected. Platinum thin-film pages are used to obtain the heat-flux measurements and mi
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Dorney, Daniel J., and Karen Gundy-Burlet. "Hot Streak Clocking Effects in a 1-1/2 Stage Turbine." In ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/95-gt-202.

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Experimental data has shown that combustor hot streaks can lead to pressure side “hot spots” on first-stage turbine rotor blades. Previous numerical studies have confirmed that unsteady Navier-Stokes procedures can be used to predict the rotor pressure surface temperature increase associated with these combustor hot streaks, and suggest that second-stage turbine stators can also be subjected to increased surface temperatures. In the current investigation, two-dimensional unsteady Navier-Stokes simulations have been performed to study the effects of combustor hot streak position (or clocking) o
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Green, Brian R., Randall M. Mathison, and Michael G. Dunn. "Comparison of Harmonic and Time-Marching Unsteady CFD Solutions With Measurements for a Single Stage High-Pressure Turbine." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69934.

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The unsteady aerodynamics of a single-stage high-pressure turbine has been the subject of a study involving detailed measurements and computations. Data and predictions for this experiment have been presented previously, but the current study compares predictions obtained using the nonlinear harmonic simulation method to results obtained using a time-marching simulation with phase-lag boundary conditions. The experimental configuration consisted of a single-stage high-pressure turbine (HPT) and the adjacent, downstream, low-pressure turbine nozzle row (LPV) with an aerodynamic design that is t
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Waidmann, Christian, Rico Poser, David Gutiérrez de Arcos, et al. "Experimental Investigation of Local Heat Transfer in a Rotating Two-Pass Cooling Channel Using the Transient Thermochromic Liquid Crystal (TLC) Technique." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-81291.

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Abstract A test rig for the investigation of rotating turbine blade internal cooling channel configurations is presented. Local heat transfer distributions are evaluated using the transient thermochromic liquid crystal (TLC) technique. The rig can be operated at rotational speeds of up to 900 rpm, mass flow rates between 3 g/s and 30 g/s, fluid temperatures between −100 °C and +80°C and fluid pressures of up to 10 bar. This allows for a broad range of possible test conditions. The investigated cooling channel model is a two-pass leading edge configuration manufactured out of acrylic glass. It
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