Results 11 to 20 of about 1,188,974 (311)

Spatio-Featural Scale-Space

, 2009
Linear scale-space theory is the fundamental building block for many approaches to image processing like pyramids or scale-selection. However, linear smoothing does not preserve image structures very well and thus non-linear techniques are mostly applied for image enhancement.
Michael Felsberg, Felsberg, Michael, Felsberg, Michael,   +2 more
openaire   +4 more sources

Conceptual Design and Demonstration of Space Scale for Measuring Mass in Microgravity Environment [PDF]

Journal of Astronomy and Space Sciences, 2015
In this study, a new idea for developing a space scale for measuring mass in a microgravity environment was proposed by using the inertial force properties of an object to measure its mass.
Youn-Kyu Kim, Joo-Hee Lee, Gi-Hyuk Choi, Ik-Hyeon Choi   +3 more
doaj   +2 more sources

Occurrence frequency of subcritical Richardson numbers assessed by global high-resolution radiosonde and ERA5 reanalysis [PDF]

Atmospheric Chemistry and Physics, 2023
Kelvin–Helmholtz instability (KHI) is most likely to be the primary source for clear-air turbulence, which is of importance in pollution transfer and diffusion and aircraft safety. It is indicated by the critical value of the dimensionless Richardson (Ri)
J. Shao, J. Zhang, W. Wang, S. Zhang, T. Yu, W. Dong, W. Dong   +6 more
doaj   +1 more source

Quantisation Scale-Spaces [PDF]

, 2021
To appear in A. Elmoataz, J. Fadili, Y. Queau, J. Rabin, L. Simon (Eds.): Scale Space and Variational Methods in Computer Vision.
openaire   +2 more sources

Scales in Space

Integrated Assessment, 2002
Economists have devoted more attention to the scale of time than to the scale of space. What has been done in the field of space is often general and abstract, not connected to an explicit observation set in time and space. Moreover, time scales and spatial scales are not tied, making the choice for a macro, meso or microeconomic theory a rather ...
van der Veen, Anne, Otter, Henriëtte S.
openaire   +2 more sources

Design of gradient coils based on the target field method in a high-permeability shield considering sidewall apertures

Results in Physics, 2023
The combination of high-permeability ferrite and coils is often used to nullify ambient magnetic fields and is widely used in applications such as magnetic resonance imaging and high-sensitivity magnetic sensors.
Kun Wang, Danyue Ma, Yao Dou, Yanan Gao, Siran Li, Jing Wang, Jinji Sun   +6 more
doaj   +1 more source

SWIFF : space weather integrated forecasting framework [PDF]

, 2013
This research has received funding from the European Commission’s FP7 Program with the grant agreement SWIFF (Project No. 2633430, swiff.eu). The KU Leuven simulations were conducted on the computational resources provided by the PRACE Tier-0 Project No.
Viviane Pierrard, Bemporad, Alessandro, Parnell, Clare Elizabeth, O. Sebek, HENRI, PIERRE REMI ANTOINE, Mackay, Duncan H., Ondřej Šebek, Clare E. Parnell, Nordlund, Åke, Trávníček, Pavel M., Bemporad, A., Åke Nordlund, Mackay, Duncan Hendry, R. Keppens, A. Restante, Alessandro Bemporad, Pegoraro, Francesco, Parnell, C., V. Pierrard, Pierrard, Viviane, Markidis, Stefano,, D. Mackay, Keppens, R., Restante, A., Mackay, D., Faganello, Matteo, Stefano Markidis, Jacob Trier Frederiksen, Mackay, D.H., A. Bemporad, Faganello, M., Rony Keppens, Kris Borremans, Olshevsky, Vyacheslav, Pegoraro, F., Susino, R., M. Faganello V. Olshevsky, Parnell, Clare E., Borremans, K., K. Borremans, S. Poedts, Parnell, C.E., C. Parnell, Frederiksen, J., Lapenta, G., Califano, Francesco, S. Markidis, Francesco Califano, Restante, A.L., Borremans, Kris, Giovanni Lapenta, Pierrard, V., Keppens, Rony, Šebek, Ondřej, Trier Frederiksen, Jacob, Susino, Roberto, Lapenta, Giovanni, Henri, P., Califano, F., J. Frederiksen, Pavel M. Trávníček, Travnıcek, P., Pierre Henri, Restante, Anna Lisa, Markidis, S., Henri, Pierre, Stefaan Poedts, Vyacheslav Olshevsky, Markidis, Stefano, Duncan H. Mackay, Poedts, S., R. Susino, Frederiksen, Jacob Trier, Nordlund, A., G. Lapenta, Sebek, O., Anna Lisa Restante, Trávníček, P.M., Roberto Susino, Poedts, Stefaan, Olshevsky, V., A. Nordlund, Matteo Faganello, Francesco Pegoraro, Trávníček, Pavel M   +84 more
core   +1 more source

Scale space Radon transform

IET Image Processing, 2021
An extension of Radon transform by using a measure function capturing the user need is proposed. The new transform, called scale space Radon transform, is devoted to the case where the embedded shape in the image is not filiform.
Djemel Ziou, Nafaa Nacereddine, Aicha Baya Goumeidane   +2 more
doaj   +1 more source

Enhanced Electromagnetic Wave Absorption Properties of Ultrathin MnO₂ Nanosheet-Decorated Spherical Flower-Shaped Carbonyl Iron Powder

Molecules, 2021
In this work, spherical flower-shaped composite carbonyl iron powder@MnO2 (CIP@MnO2) with CIP as the core and ultrathin MnO2 nanosheets as the shell was successfully prepared by a simple redox reaction to improve oxidation resistance and electromagnetic ...
Zhengwei Qu, Yi Wang, Pingan Yang, Wei Zheng, Nan Li, Jingying Bai, Youwei Zhang, Kailin Li, Dashuang Wang, Zhaohui Liu, Kexin Yao, Rui Li, Yuxin Zhang   +12 more
doaj   +1 more source

Multi-pyramid image spatial structure based on coarse-to-fine pyramid and scale space

CAAI Transactions on Intelligence Technology, 2018
Coarse-to-fine pyramid and scale space are two important image structures in the realm of image matching. However, the advantage of coarse-to-fine pyramid is neglected as the pyramid structure is usually constructed with the down sampling method in scale
Jiucheng Xu, Nan Wang, Yuyao Wang
doaj   +1 more source