Results 21 to 30 of about 15,576,713 (334)

Volcanism and Deep Structures of the Moon

open access: yesSpace: Science & Technology, 2023
Volcanism is the most important endogenic geological process of the Moon, which is closely related to its internal structure and thermal history. Lunar volcanism is one of the most important topics for lunar science and explorations. Recent lunar orbital
Jiannan Zhao   +8 more
doaj   +1 more source

Time-causal and time-recursive spatio-temporal receptive fields [PDF]

open access: yes, 2015
We present an improved model and theory for time-causal and time-recursive spatio-temporal receptive fields, based on a combination of Gaussian receptive fields over the spatial domain and first-order integrators or equivalently truncated exponential ...
Lindeberg, Tony
core   +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

Bulk Scale Factor at Very Early Universe [PDF]

open access: yes, 2011
In this paper we propose a higher dimensional Cosmology based on FRW model and brane-world scenario. We consider the warp factor in the brane-world scenario as a scale factor in 5-dimensional generalized FRW metric, which is called as bulk scale factor ...
A. Einstein   +23 more
core   +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

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

Inverse scale space decomposition [PDF]

open access: yes, 2016
We investigate the inverse scale space flow as a decomposition method for decomposing data into generalised singular vectors. We show that the inverse scale space flow, based on convex and even and positively one-homogeneous regularisation functionals ...
Marie Foged Schmidt   +2 more
semanticscholar   +1 more source

A robust nonlinear scale space change detection approach for SAR images [PDF]

open access: yes, 2013
In this paper, we propose a change detection approach based on nonlinear scale space analysis of change images for robust detection of various changes incurred by natural phenomena and/or human activities in Synthetic Aperture Radar (SAR) images using ...
Demirkesen, Can   +4 more
core   +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

Large-scale retrospective relative spectro-photometric self-calibration in space [PDF]

open access: yes, 2017
We consider the application of relative self-calibration using overlap regions to spectroscopic galaxy surveys that use slit-less spectroscopy. This method is based on that developed for the SDSS by Padmanabhan at al.
Amiaux, Jerome   +9 more
core   +4 more sources

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