Results 21 to 30 of about 198,471 (287)

Blind image separation using pyramid technique

open access: yesEURASIP Journal on Image and Video Processing, 2018
Signal and image separation is an important processing step for accurate image reconstruction, which is increasingly applied to many medical imaging applications and communication systems.
M. Y. Abbass, HyungWon Kim
doaj   +1 more source

AF-EMS Detector: Improve the Multi-Scale Detection Performance of the Anchor-Free Detector

open access: yesRemote Sensing, 2021
As a precursor step for computer vision algorithms, object detection plays an important role in various practical application scenarios. With the objects to be detected becoming more complex, the problem of multi-scale object detection has attracted more
Jiangqiao Yan   +4 more
doaj   +1 more source

Prediction of sub-pyramid texturing as the next step towards high efficiency silicon heterojunction solar cells

open access: yesNature Communications, 2023
The interfacial morphology of crystalline silicon/hydrogenated amorphous silicon (c-Si/a-Si:H) is a key success factor to approach the theoretical efficiency of Si-based solar cells, especially Si heterojunction technology.
Feihong Chu   +13 more
doaj   +1 more source

Non-dimensional Star-Identification

open access: yes, 2020
This study introduces a new "Non-Dimensional" star identification algorithm to reliably identify the stars observed by a wide field-of-view star tracker when the focal length and optical axis offset values are known with poor accuracy.
Arnas, David   +2 more
core   +1 more source

Overcomplete steerable pyramid filters and rotation invariance [PDF]

open access: yes, 1994
A given (overcomplete) discrete oriented pyramid may be converted into a steerable pyramid by interpolation. We present a technique for deriving the optimal interpolation functions (otherwise called 'steering coefficients').
Anderson, C. H.   +5 more
core   +4 more sources

Abusir 3D survey 2015 [PDF]

open access: yesPražské Egyptologické Studie, 2016
In 2015, in collaboration with the Czech Institute of Egyptology, we, a Japanese consortium, initiated the Abusir 3D Survey (A-3DS) for the 3D documentation of the site’s pyramids, which have not been updated since the time of the architectural ...
Yukinori Kawae   +4 more
doaj  

One-step electrodeposition of Ni-Mo electrode with column-pyramid hierarchical structure for highly-efficient hydrogen evolution

open access: yesMaterials & Design, 2022
The construction of transition metal alloys with 3D structure facilitates their catalytic activity towards hydrogen evolution reaction. Although this can be achieved by the wet chemical and template strategies, the uncertainty of reaction process ...
Huan Liu   +4 more
doaj   +1 more source

Reforming WTO Conflict Management Why and How to Improve the Use of “Specific Trade Concerns”. Bertelsmann Working Paper 24/02/2020 [PDF]

open access: yes, 2020
The World Trade Organization (WTO) needs reform to strengthen its vital role in mitigating commercial conflict, notably its procedures for discussing trade concerns.
Wolfe, Robert
core  

Efficiently Storing Well-Composed Polyhedral Complexes Computed Over 3D Binary Images [PDF]

open access: yes, 2017
A 3D binary image I can be naturally represented by a combinatorial-algebraic structure called cubical complex and denoted by Q(I ), whose basic building blocks are vertices, edges, square faces and cubes. In Gonzalez-Diaz et al.
González Díaz, Rocío   +2 more
core   +1 more source

A Holographic Diffuser Generalised Optical Differentiation Wavefront Sensor

open access: yes, 2017
The wavefront sensors used today at the biggest World's telescopes have either a high dynamic range or a high sensitivity, and they are subject to a linear trade off between these two parameters.
Bergomi, Maria   +14 more
core   +1 more source

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