Relevant bibliographies by topics / Spatial frequencies

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Spatial frequencies'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 March 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Spatial frequencies.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Spatial frequencies"

1

Parish, David H., and George Sperling. "Object spatial frequencies, retinal spatial frequencies, noise, and the efficiency of letter discrimination." Vision Research 31, no. 7-8 (1991): 1399–415. http://dx.doi.org/10.1016/0042-6989(91)90060-i.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Boles, David B., and Marcia L. Morelli. "Hemispheric sensitivity to spatial frequencies." Bulletin of the Psychonomic Society 26, no. 6 (1988): 552–55. http://dx.doi.org/10.3758/bf03330119.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

hammal, z., f. gosselin, i. peretz, and s. hebert. "Spatial Frequencies Mediating Music Reading." Journal of Vision 10, no. 7 (2010): 971. http://dx.doi.org/10.1167/10.7.971.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Delplanque, Sylvain, Karim N’diaye, Klaus Scherer, and Didier Grandjean. "Spatial frequencies or emotional effects?" Journal of Neuroscience Methods 165, no. 1 (2007): 144–50. http://dx.doi.org/10.1016/j.jneumeth.2007.05.030.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Brigner, Willard L., and R. W. Berks. "High Spatial Frequencies Inhibit Motion Perception." Perceptual and Motor Skills 61, no. 3 (1985): 853–54. http://dx.doi.org/10.2466/pms.1985.61.3.853.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Ragazzoni, Roberto, Daniele Vassallo, Marco Dima, et al. "Multiple Spatial Frequencies Pyramid WaveFront Sensing." Publications of the Astronomical Society of the Pacific 129, no. 981 (2017): 115001. http://dx.doi.org/10.1088/1538-3873/aa885a.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Olzak, Lynn A. "Widely separated spatial frequencies: Mechanism interactions." Vision Research 26, no. 7 (1986): 1143–53. http://dx.doi.org/10.1016/0042-6989(86)90048-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Shulman, Gordon L., and James Wilson. "Spatial Frequency and Selective Attention to Spatial Location." Perception 16, no. 1 (1987): 103–11. http://dx.doi.org/10.1068/p160103.

Full text
Abstract:
The effect of spatial attention on the detectability of gratings of different spatial frequency was measured using a probe technique. Three experiments are reported in which the detectability of full-field probe gratings was measured while subjects analyzed stimuli presented in either the central or the peripheral visual field. Selective attention to peripheral stimuli produced a facilitation at low frequencies and a decrement at high frequencies. These effects disappeared under forced-choice presentation.
APA, Harvard, Vancouver, ISO, and other styles
9

Miller, Matthew J., and Brian J. Reich. "Bayesian spatial modeling using random Fourier frequencies." Spatial Statistics 48 (April 2022): 100598. http://dx.doi.org/10.1016/j.spasta.2022.100598.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Meyers, E., Y. Ostrovsky, and P. Sinha. "Visual de-fragmentation via high spatial frequencies." Journal of Vision 5, no. 8 (2010): 353. http://dx.doi.org/10.1167/5.8.353.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Spatial frequencies"

1

McSorley, Eugene. "Spatiotemporal integration of spatial frequencies." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4615/.

Full text
Abstract:
Spatial frequency processing delays suggest that their integration occurs from coarse to fine. However it may be the case that integration is flexible. The first aim of this thesis was to examine the integration of spatial frequencies and the second was to examine the delays involved in initial spatial frequency processing. A coarse to fine and a fine to coarse presentation order of filtered natural images were shown. The former is judged to be of a higher quality (experiment 1) but neither show any increase in incorrect detection reports of a fullbandwidth image (experiment 2, 3 and 4). When
APA, Harvard, Vancouver, ISO, and other styles
2

Costen, Nicholas Paul. "Spatial frequencies and face recognition." Thesis, University of Aberdeen, 1994. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU069146.

Full text
Abstract:
If face images are degraded by spatial quantisation there is a non-linear acceleration of the decline of recognition accuracy as block-size increases, suggesting recognition requires a critical minimum range of object spatial frequencies. These may define the facial configuration, reflecting the structural properties allowing differentiation of faces. Experiment 1 measured speed and accuracy of recognition of six fronto-parallel faces shown with 11, 21 and 42 pixels/face, produced by quantisation, a Fourier low-pass filter and Gaussian blurring. Performance declined with image quality in a sig
APA, Harvard, Vancouver, ISO, and other styles
3

Shrekenhamer, David. "Dynamic Control of Metamaterials at Terahertz Frequencies." Thesis, Boston College, 2013. http://hdl.handle.net/2345/3152.

Full text
Abstract:
Thesis advisor: Willie J. Padilla<br>Progress in the field of metamaterials has started coming to a point where the field may finally begin to emerge as a viable solution to many electromagnetic challenges facing the community. No where is that more true then at terahertz frequencies where there lies an immense opportunity for growth. The development of mature technologies within this region of the electromagnetic spectrum would provide a valuable resource to become available for a multitude of applications. In order to achieve this, the necessary first steps of identifying viable materials an
APA, Harvard, Vancouver, ISO, and other styles
4

Jeantet, Coline. "Evaluation du traitement visuel précoce des visages chez les usagers de cannabis : étude par potentiels évoqués." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0329/document.

Full text
Abstract:
Le cannabis est la drogue illégale la plus consommée actuellement en France. Le Δ9-tétrahydrocannabinol (Δ9-THC), en tant qu’excocannabinoïde, a un impact sur le système visuel via le système endocannabinoïde. Physiologiquement, parmi les deux voies majoritairement responsables de la transmission de l’information visuelle aux stades les plus précoces, la voie magnocellulaire pourrait être la plus sensible à l’effet du Δ9-THC. La perception des visages, stimuli complexes, nécessite le traitement précoce d’informations de bas niveaux : les fréquences spatiales. Or, les différentes gammes de fréq
APA, Harvard, Vancouver, ISO, and other styles
5

Boden, Catherine. "The role of low spatial frequencies in lexical decision and word naming, a masked priming study." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ61066.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Herold, F. W., and J. A. Kaiser. "ELIMINATION OF SIDELOBE RESPONSE." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607377.

Full text
Abstract:
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California<br>Conventional phased arrays nominally sum the signals received by the elements prior to detection. By multiplying rather than summing signals received from pairs of elements, i.e., interferometer pairs, a set of Spatial Frequencies (SFs) is obtained. Obtaining the SFs requires employment of a multiple local oscillator technique. When summed, these spatial frequencies produce a single lobed (voltage) radiation pattern which, when passed through
APA, Harvard, Vancouver, ISO, and other styles
7

Wadden, David. "Rainfall distribution in the City of St. John's : temporal distribution, spatial variation, frequency analysis, and Tropical Storm Gabrielle /." Internet access available to MUN users only, 2002. http://collections.mun.ca/u?/theses,49727.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Lacerda, Aline Mendes. "Processamento visual de contraste em pacientes com depressão maior." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/47/47135/tde-17092012-144825/.

Full text
Abstract:
O presente estudo teve como objetivo investigar possíveis alterações na percepção visual relacionadas à depressão maior. Para tanto, realizou-se medidas de sensibilidade ao contraste (SC), uma das ferramentas mais utilizadas na avaliação teórica e clínica do sistema visual humano. A SC tem se estabelecido como uma técnica que permite estudar e identificar a forma como determinadas patologias acometem a visão e o sistema nervoso central. Participaram deste estudo 33 voluntários, com idades entre 19 e 37 anos e acuidade visual normal ou corrigida. Dentre eles, 11 foram diagnosticados com transto
APA, Harvard, Vancouver, ISO, and other styles
9

Kauffmann, Louise. "Mécanismes et bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes visuelles." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAS047/document.

Full text
Abstract:
L'analyse visuelle de scènes débute par l'extraction en parallèle de l'information à différentes fréquences spatiales, en suivant un mode de traitement par défaut « coarse-to-fine ». L'analyse rapide de l'information grossière (« coarse ») en basses fréquences spatiales fournirait un aperçu global de la scène, qui serait ensuite affiné par l'analyse des détails de la scène (« fine ») en hautes fréquences spatiales. L'objectif de cette thèse a été de préciser les bases cérébrales du traitement des fréquences spatiales lors de la catégorisation de scènes. A travers deux études comportementales,
APA, Harvard, Vancouver, ISO, and other styles
10

Kaiser, Julius A. "RETRODIRECTIVE ANTENNA SYSTEM." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608421.

Full text
Abstract:
International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>Two retrodirective antenna systems that autonomously point high gain beams to a signal source without requiring a priori knowledge of location are described. The first is a stationary phased array requiring no phase shifters or switches for its operation. The second is a steerable platform with a thinned receive array for signal acquisition and platform pointing and dish(es) to satisfy the high gain function.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Spatial frequencies"

1

Zahar, Yadh. Eléments d'hydrologie pour l'aménagement: Modélisation spatiale et temporelle des précipitations extrêmes et érosives en Tunisie centrale. Université des lettres, des arts et des sciences humaines, Tunis I, Faculté des lettres de la Manouba, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Piepmeier, Karen Swanson. Determining readability by computer analysis using the Fourier transform to calculate the spatial frequencies of words. 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Oliva, Aude, and Philippe G. Schyns. Hybrid Image Illusion. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199794607.003.0111.

Full text
Abstract:
Artists, designers, photographers, and visual scientists are routinely looking for ways to create, out of a single image, the feeling that there is more to see than what meets the eye. Many well-known visual illusions are dual in nature, causing the viewer to experience two different interpretations of the same image. Hybrid images illustrate a double-image illusion, where different images are perceived depending on viewing distance, viewing duration, or image size: one that appears when the image is viewed up-close (displaying high spatial frequencies) and another that appears from afar (show
APA, Harvard, Vancouver, ISO, and other styles
4

McCourt, Mark E., and Barbara Blakeslee. Grating Induction. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199794607.003.0055.

Full text
Abstract:
Grating induction is a brightness/lightness illusion in which a sinewave luminance grating induces the appearance of a counterphase sinusoidal grating in a homogeneous test field oriented orthogonally to the inducing grating. Induction is greatest at low spatial and temporal frequencies and declines with increasing frequency in both dimensions. Induction magnitude also declines with increasing test field height and scales as the product of inducing grating spatial frequency (c/d) and test field height. These properties of grating induction are difficult to explain using nonfiltering-based mode
APA, Harvard, Vancouver, ISO, and other styles
5

Fermüller, Cornelia. Motion Illusions in Man and Machine. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780199794607.003.0006.

Full text
Abstract:
At the level of mathematical abstraction, computing image motion amounts to an estimation problem and can be analyzed using the tools of statistics and signal processing. As shown in this chapter, intrinsic limitations to the estimation processes make it impossible to derive veridical estimates for all images. Image motion is estimated erroneously, and as a result higher level processes compute erroneous three-dimensional motion and moving scenes. Specifically, two limitations are discussed: (a) due to noise in image data, there is statistical bias that affects anisotropic patterns and (2) the
APA, Harvard, Vancouver, ISO, and other styles
6

Michel, Christoph M., and Bin He. EEG Mapping and Source Imaging. Edited by Donald L. Schomer and Fernando H. Lopes da Silva. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190228484.003.0045.

Full text
Abstract:
This chapter describes methods to analyze the scalp electric field recorded with multichannel electroencephalography (EEG). With advances in high-density EEG, systems now allow fast and easy recording from 64 to 256 channels simultaneously. Pattern-recognition algorithms can characterize the topography of scalp electric fields and detect changes in topography over time and between experimental or clinical conditions. Methods for estimating the sources underlying the recorded scalp potential maps have increased the spatial resolution of EEG. The use of anatomical information in EEG source recon
APA, Harvard, Vancouver, ISO, and other styles
7

Schomer, Donald L., Charles M. Epstein, Susan T. Herman, Douglas Maus, and Bruce J. Fisch. Recording Principles. Edited by Donald L. Schomer and Fernando H. Lopes da Silva. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190228484.003.0005.

Full text
Abstract:
This chapter reviews the technical aspects of recording and reviewing clinical electroencephalograms (EEGs) and related biopotentials. While advances in engineering technology have revolutionized EEG machines, the basic principles underlying accurate representation of brain activity are largely unchanged. The first section reviews the analog EEG components, and the second section discusses analog-to-digital conversion, digital filters, and display and storage parameters. Digital EEG machines are now less expensive and their capabilities far surpass those of analog machines. The third section r
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Spatial frequencies"

1

Heilbronner, Renée, and Steve Barrett. "Spatial Frequencies." In Image Analysis in Earth Sciences. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-10343-8_19.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Beck, Cornelia, Pierre Bayerl, and Heiko Neumann. "Optic Flow Integration at Multiple Spatial Frequencies – Neural Mechanism and Algorithm." In Advances in Visual Computing. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11919476_74.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Arias, Adrián, Eduardo Sánchez, and Luis Martínez. "Restoration Model for Attenuated Low Spatial Frequencies in the Retinal Output." In Natural and Artificial Computation for Biomedicine and Neuroscience. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-59740-9_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Álvarez, M. L., N. Camacho, C. Neipp, A. Márquez, A. Beléndez, and I. Pascual. "Holographic Gratings with Different Spatial Frequencies Recorded on BB-640 Bleached Silver Halide Emulsions Using Reversal Bleaches." In Materials Science Forum. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-962-8.543.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Calleo, Yuri, and Simone Di Zio. "Unsupervised spatial data mining for the development of future scenarios: a Covid-19 application." In Proceedings e report. Firenze University Press, 2021. http://dx.doi.org/10.36253/978-88-5518-461-8.33.

Full text
Abstract:
In the context of Futures Studies, the scenario development process permits to make assumptions on what the futures can be in order to support better today decisions. In the initial stages of the scenario building (Framing and Scanning phases), the process requires much time and efforts to scanning data and information (reading of documents, literature review and consultation of experts) to understand more about the object of the foresight study. The daily use of social networks causes an exponential increase of data and for this reason here we deal with the problem of speeding up and optimizing the Scanning phase by applying a new combined method based on the analysis of tweets with the use of unsupervised classification models, text-mining and spatial data mining techniques. For the purpose of having a qualitative overview, we applied the bag-of-words model and a Sentiment Analysis with the Afinn and Vader algorithms. Then, in order to extrapolate the influence factors, and the relevant key factors (Kayser and Blind, 2017; 2020) the Latent Dirichlet Allocation (LDA) was used (Tong and Zhang, 2016). Furthermore, to acquire also spatial information we used spatial data mining technique to extract georeferenced data from which it was possible to analyse and obtain a geographic analysis of the data. To showcase our method, we provide an example using Covid-19 tweets (Uhl and Schiebel, 2017), upon which 5 topics and 6 key factors have been extracted. In the last instance, for each influence factor, a cartogram was created through the relative frequencies in order to have a spatial distribution of the users discussing each particular topic. The results fully answer the research objectives and the model used could be a new approach that can offer benefits in the scenario developments process.
APA, Harvard, Vancouver, ISO, and other styles
6

Papathanassiou, K. P., S. R. Cloude, M. Pardini, et al. "Forest Applications." In Polarimetric Synthetic Aperture Radar. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-56504-6_2.

Full text
Abstract:
AbstractThe application of polarimetric Synthetic Aperture Radar (SAR) to forest observation for mapping, classification and parameter estimation (especially biomass) has a relatively long history. The radar penetration through forest volume, and hence the multi-layer nature of scattering models, make fully polarimetric data the observation space enabling a robust and full inversion of such models. A critical advance came with the introduction of polarimetric SAR interferometry, where polarimetry provides the parameter diversity, while the interferometric baseline proves a user-defined entropy control as well as spatial separation of scattering components, together with their location in the third dimension (height). Finally, the availability of multiple baselines leads to the full 3-D imaging of forest volumes through TomoSAR, the quality of which is again greatly enhanced by the inclusion of polarimetry. The objective of this Chapter is to review applications of SAR polarimetry, polarimetric interferometry and tomography to forest mapping and classification, height estimation, 3-D structure characterization and biomass estimation. This review includes not only models and algorithms, but it also contains a large number of experimental results in different test sites and forest types, and from airborne and space borne SAR data at different frequencies.
APA, Harvard, Vancouver, ISO, and other styles
7

"Reducing Spatial Frequencies." In Eyestrain Reduction in Stereoscopy. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119318330.ch6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Popescu, Gabriel. "Spatial and temporal frequencies." In Principles of Biophotonics, Volume 1: Linear systems and the Fourier transform in optics. IOP Publishing, 2019. http://dx.doi.org/10.1088/2053-2563/aae121ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Bradshaw, John L. "SPATIAL FREQUENCIES AND THE CEREBRAL HEMISPHERES." In Handbook of Research on Face Processing. Elsevier, 1989. http://dx.doi.org/10.1016/b978-0-444-87143-5.50010-x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Daniel, I. Randolph, and Michael Wisenbaker. "Intra-Site Spatial Analysis." In Harney Flats. University Press of Florida, 2017. http://dx.doi.org/10.5744/florida/9781683400226.003.0005.

Full text
Abstract:
This chapter describes attempts to elucidate the internal site structure of the Suwannee-Bolen component at Harney Flats which was a major goal of the project. SYMAPS of the flake distributions and piece-plotted artifact distributions for each excavation area are illustrated and examined with respect to ethnoarchaeological models of hunter-gatherer site structure. Spatial patterning within each area is less clear than patterning between areas. That is, while the three areas are generally similar in the range of tool types they contain, they do differ in the relative frequencies of those tool types. The assemblages of Areas 2 and 3 are interpreted to represent activities primarily associated with tool manufacture and core reduction. The Area 1 assemblage differs from the other two areas and is interpreted as a living area. Moreover, Area 1 is situated on the highest and flattest portion of the site, with Areas 2 and 3 situated farther downslope.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Spatial frequencies"

1

Ragazzoni, Roberto, Daniele Vassallo, Marco Dima, et al. "Multiple spatial frequencies wavefront sensing." In Adaptive Optics for Extremely Large Telescopes 5. Instituto de Astrofísica de Canarias (IAC), 2017. http://dx.doi.org/10.26698/ao4elt5.0095.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Moreno, Ivan, and J. Jesus Araiza. "Thin-film optical filters for spatial frequencies." In Optical Science and Technology, the SPIE 49th Annual Meeting, edited by Jose M. Sasian, R. John Koshel, Paul K. Manhart, and Richard C. Juergens. SPIE, 2004. http://dx.doi.org/10.1117/12.560045.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Forbes, G. W. "Never-ending struggles with mid-spatial frequencies." In SPIE Optical Metrology, edited by Peter Lehmann, Wolfgang Osten, and Armando Albertazzi Gonçalves. SPIE, 2015. http://dx.doi.org/10.1117/12.2191135.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Ellison, Joseph, and Steven VanKerkhove. "Minimize Mid-Spatial Frequencies on Aspherical Surfaces." In Optical Fabrication and Testing. OSA, 2012. http://dx.doi.org/10.1364/oft.2012.om4d.2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Mohamed, Waled T. A., and Ahmad Kashani. "Spatial Pendulum TMD With Two Tuning Frequencies." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-96610.

Full text
Abstract:
Abstract Some structures have different natural frequencies in the two lateral X and Y-directions. Tuned damping of such structures require using either a) the less attractive option of two regular PTMDs each tuned to one of the natural frequencies of the structures’ lateral modes or b) one pendulum TMD with two different tuning frequencies (one for each lateral directions), necessitating two different swinging lengths. Pendulum TMDs with two different tuning frequencies in the two lateral X and Y directions, are realized by constraining the swinging length of the pendulum in one direction but
APA, Harvard, Vancouver, ISO, and other styles
6

Pavel, Michael. "Information fusion over apertures and spatial frequencies." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.thp3.

Full text
Abstract:
This study investigated the ability of humans to combine information about the position and orientation of straight edges from two or more regions of their spatial frequency spectra. The stimuli were luminance edges and straight lines decomposed into spatial frequency bands by using Laplacian pyramids. Different combinations of the frequency components contaminated by additive noise were presented at either the same or different spatial locations. The task was to judge the positions and orientations of the edges with respect to a probe point. Depending on the condition, the optimal fusion stra
APA, Harvard, Vancouver, ISO, and other styles
7

Sinden, David, Srinath Rajagopal, N. Christopher Chaggares, Guofeng Pang, and Oleg Ivanytskyy. "Reducing uncertainties for spatial averaging at high frequencies." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8091600.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Sinden, David, N. Christopher Chaggares, Guofeng Pang, Oleg Ivanytskyy, and Srinath Rajagopal. "Reducing uncertainties for spatial averaging at high frequencies." In 2017 IEEE International Ultrasonics Symposium (IUS). IEEE, 2017. http://dx.doi.org/10.1109/ultsym.2017.8091672.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Saeidi, Chiya, and Daniel van der Weide. "Spatial filter for optical frequencies using plasmonic metasurfaces." In 2013 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2013. http://dx.doi.org/10.1109/aps.2013.6711499.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lou, Yang, and Jesse T. Yen. "Coherence Estimation using Random Selection of Spatial Frequencies." In 2020 IEEE International Ultrasonics Symposium (IUS). IEEE, 2020. http://dx.doi.org/10.1109/ius46767.2020.9251766.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Spatial frequencies"

1

Maydykovskiy, Igor, and Petra Užpelkis. The Concept of space-time quanta in future technologies. Intellectual Archive, 2020. http://dx.doi.org/10.32370/iaj.2464.

Full text
Abstract:
The article discusses the possibility of using the technological advantages that appear in connection with the discovery of the physical essence of Time and new interpretation of the structure of space in the form of space-time quanta. One of the problems that can be successfully solved on the basis of the new physical model is the problem of establishing the true nature of gravity. The solution to this problem is directly related to the implementation of the idea of unsupported motion based on the interaction in a certain way of the created asymmetric interference structure of longitudinal wa
APA, Harvard, Vancouver, ISO, and other styles
2

Wilson, D., Matthew Kamrath, Caitlin Haedrich, Daniel Breton, and Carl Hart. Urban noise distributions and the influence of geometric spreading on skewness. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42483.

Full text
Abstract:
Statistical distributions of urban noise levels are influenced by many complex phenomena, including spatial and temporal variations in the source level, multisource mixtures, propagation losses, and random fading from multipath reflections. This article provides a broad perspective on the varying impacts of these phenomena. Distributions incorporating random fading and averaging (e.g., gamma and noncentral Erlang) tend to be negatively skewed on logarithmic (decibel) axes but can be positively skewed if the fading process is strongly modulated by source power variations (e.g., compound gamma).
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography