Results 41 to 50 of about 5,333 (191)
, 2023 We present a new high-order accurate spectral element solution to the two-dimensional scalar Poisson equation subject to a general Robin boundary condition.
Engsig-Karup, Allan Peter +2 more
core +1 more source
A Regional Mapping Method for Oilseed Rape Based on HSV Transformation and Spectral Features [PDF]
ISPRS International Journal of Geo-Information, 2018 This study proposed a colorimetric transformation and spectral features-based oilseed rape extraction algorithm (CSRA) to map oilseed rape at the provincial scale as a first step towards country-scale coverage. Using a stepwise analysis strategy, our method gradually separates vegetation from non-vegetation, crop from non-crop, and oilseed rape from ...
Dong Wang +6 more
openaire +2 more sources
Cubature points based triangular spectral elements: An accuracy study
, 2018 International audienceWe investigate the cubature points based triangular spectral element method and provide accuracy results for elliptic problems in non polygonal domains using various isoparametric mappings.
Pasquetti, Richard, Rapetti, Francesca
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Harmonic maps, SU (N) skyrme models and yang-mills theories [PDF]
, 2002 This thesis examines the construction of static solutions of (3+l)-dimensional SU{N) Skyrme models, usual and alternative, and pure massive SU(N) Yang-Mills theories.
Wospakrik, Hans Jacobus
core
, 1993 In this paper a novel and effective maximum likelihood type method for the estimation of physically meaningful continuous-time stochastic systems from analog data records is introduced.
Fassois, S. D. (Spilios D.) +1 more
core +1 more source
A Spectral Unmixing Method with Ensemble Estimation of Endmembers: Application to Flood Mapping in the Caprivi Floodplain [PDF]
Remote Sensing, 2017 The Caprivi basin in Namibia has been affected by severe flooding in recent years resulting in deaths, displacements and destruction of infrastructure. The negative consequences of these floods have emphasized the need for timely, accurate and objective information about the extent and location of affected areas. Due to the high temporal variability of
Tsitsi Bangira +4 more
openaire +5 more sources
The use of artificial neural networks to analyze and predict alongshore sediment transport [PDF]
, 2010 An artificial neural network (ANN) was developed to predict the depth-integrated alongshore suspended sediment transport rate using 4 input variables (water depth, wave height and period, and alongshore velocity).
Coco, Giovanni +10 more
core +1 more source
Geo-spatial Information ScienceAccurate wetland classification demands high spectral detail and large-area coverage – capabilities that neither satellite multispectral data (limited spectral resolution) nor unmanned aerial vehicle (UAV) hyperspectral data (limited spatial coverage ...
Cong Shen +6 more
doaj +1 more source
3-D Mesh geometry compression with set partitioning in the spectral domain
, 2010 This paper explains the development of a highly efficient progressive 3-D mesh geometry coder based on the region adaptive transform in the spectral mesh compression method. A hierarchical set partitioning technique, originally proposed for the efficient
Bayazıt, Uluğ +3 more
core +1 more source
Hyperspectral Sparse Unmixing via Nonconvex Shrinkage Penalties
, 2023 International audienceHyperspectral sparse unmixing aims at finding the optimal subset of spectral signatures in the given spectral library and estimating their proportions in each pixel.
Hong, Danfeng +5 more
core +1 more source