Results 31 to 40 of about 14,780,830 (367)

Modulation spaces with scaling symmetry

open access: yesApplied and Computational Harmonic Analysis, 2020
We indicate how to construct a family of modulation function spaces that have a scaling symmetry. We also illustrate the behavior of the Schr\"odinger multiplier on such function spaces.
Bényi, Árpád, Oh, Tadahiro
openaire   +4 more sources

Scaling context space [PDF]

open access: yesProceedings of the 40th Annual Meeting on Association for Computational Linguistics - ACL '02, 2001
Context is used in many NLP systems as an indicator of a term's syntactic and semantic function. The accuracy of the system is dependent on the quality and quantity of contextual information available to describe each term. However, the quantity variable is no longer fixed by limited corpus resources.
Marc Moens, James Curran
openaire   +2 more sources

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

open access: yesCAAI 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

Three-Dimensional Ultrasonic Reverse-Time Migration Imaging of Submarine Pipeline Nondestructive Testing in Cylindrical Coordinates

open access: yesJournal of Marine Science and Engineering, 2023
Submarine pipelines are a safe and energy-efficient mode of gas transport. However, due to the complex manufacturing process and harsh operating environment, submarine pipelines are subject to fatigue cracks under long-term cyclic loading.
Daicheng Peng   +5 more
doaj   +1 more source

Non-Abelian gauge field theory in scale relativity [PDF]

open access: yes, 2006
Gauge field theory is developed in the framework of scale relativity. In this theory, space-time is described as a non-differentiable continuum, which implies it is fractal, i.e., explicitly dependent on internal scale variables.
Célérier M. N.   +10 more
core   +6 more sources

A parameterless scale-space approach to find meaningful modes in histograms - Application to image and spectrum segmentation [PDF]

open access: yesInt. J. Wavelets Multiresolution Inf. Process., 2014
In this paper, we present an algorithm to automatically detect meaningful modes in a histogram. The proposed method is based on the behavior of local minima in a scale-space representation.
J. Gilles, K. Heal
semanticscholar   +1 more source

Patch-NetVLAD: Multi-Scale Fusion of Locally-Global Descriptors for Place Recognition [PDF]

open access: yesComputer Vision and Pattern Recognition, 2021
Visual Place Recognition is a challenging task for robotics and autonomous systems, which must deal with the twin problems of appearance and viewpoint change in an always changing world.
Stephen Hausler   +4 more
semanticscholar   +1 more source

Heterogeneous Image Matching via a Novel Feature Describing Model

open access: yesApplied Sciences, 2019
Computer vision has been developed greatly in the past several years, and many useful and interesting technologies have been presented and widely applied. Image matching is an important technology based on similarity measurement.
Bin Zhou   +5 more
doaj   +1 more source

An Objective Fabric Smoothness Assessment Method Based on a Multi-Scale Spatial Masking Model

open access: yesIEEE Access, 2019
Fabric smoothness appearance assessment plays an important role in the textile and apparel industry. It remains a challenging task to evaluate the fabric smoothness objectively.
Jingan Wang   +5 more
doaj   +1 more source

Scale-space and edge detection using anisotropic diffusion [PDF]

open access: yes, 1990
The scale-space technique introduced by Witkin involves generating coarser resolution images by convolving the original image with a Gaussian kernel.
Malik, Jitendra, Perona, Pietro
core   +3 more sources

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