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Score-Driven Modeling of Spatio-Temporal Data. [PDF]

open access: yesJ Am Stat Assoc, 2023
A simultaneous autoregressive score-driven model with autoregressive disturbances is developed for spatio-temporal data that may exhibit heavy tails. The model specification rests on a signal plus noise decomposition of a spatially filtered process,where the signal can be approximated by a nonlinear function of the past variables and a set of ...
Gasperoni F   +3 more
europepmc   +6 more sources

Spatio-Temporal Data Construction [PDF]

open access: yesISPRS International Journal of Geo-Information, 2013
On the route to a spatio-temporal geoscience information system, an appropriate data model for geo-objects in space and time has been developed. In this model, geo-objects are represented as sequences of geometries and properties with continuous ...
Hai Ha Le
doaj   +2 more sources

Universal kriging for spatio‐temporal data

open access: yesMathematical Modelling and Analysis, 2003
In this article we have used wide applicable classes of spatio‐temporal nonseparable and separable covariance models. One of the objectives of this paper is to furnish a possibility how to avoid the usage of complicated covariance functions.
E. Lesauskiene, K. Dučinskas
doaj   +5 more sources

Histogram matching-based semantic segmentation model for crop classification with Sentinel-2 satellite imagery

open access: yesGIScience & Remote Sensing, 2023
Accurate and near-real-time crop mapping from satellite imagery is crucial for agricultural monitoring. However, the seasonal nature of crops makes it challenging to rely on traditional machine learning methods and previous samples generated within ...
Lijun Wang   +5 more
doaj   +1 more source

A Transferable Learning Classification Model and Carbon Sequestration Estimation of Crops in Farmland Ecosystem

open access: yesRemote Sensing, 2022
Frequent agricultural activities in farmland ecosystems bring challenges to crop information extraction from remote sensing (RS) imagery. The accurate spatiotemporal information of crops serves for regional decision support and ecological assessment ...
Lijun Wang   +6 more
doaj   +1 more source

Feature Fusion Approach for Temporal Land Use Mapping in Complex Agricultural Areas

open access: yesRemote Sensing, 2021
Accurate temporal land use mapping provides important and timely information for decision making for large-scale management of land and crop production.
Lijun Wang, Jiayao Wang, Fen Qin
doaj   +1 more source

Few-Shot Building Footprint Shape Classification with Relation Network

open access: yesISPRS International Journal of Geo-Information, 2022
Buildings are important entity objects of cities, and the classification of building shapes plays an indispensable role in the cognition and planning of the urban structure.
Yaohui Hu   +5 more
doaj   +1 more source

REAL-TIME UAV 3D IMAGE POINT CLOUDS MAPPING [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
This paper proposes a real-time 3D image point clouds mapping algorithm for UAVs that is capable of mapping effectively in weak GNSS environments. And a UAV mapping system is integrated with a RGB camera, an inertial measurement unit (IMU), a GNSS ...
S. Sun   +19 more
doaj   +1 more source

AUTOMATIC EVALUATION OF THE INITIAL GEOPOSITIONING ACCURACY FOR LARGE AREA PLANETARY REMOTE SENSING IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The photogrammetric processing of large area planetary remote sensing images is still a very challenging work. In addition to the lack of ground control data and poor tie points extraction, the insufficient knowledge of the initial geopositioning ...
X. Geng   +4 more
doaj   +1 more source

TriangleConv: A Deep Point Convolutional Network for Recognizing Building Shapes in Map Space

open access: yesISPRS International Journal of Geo-Information, 2021
The classification and recognition of the shapes of buildings in map space play an important role in spatial cognition, cartographic generalization, and map updating.
Chun Liu   +5 more
doaj   +1 more source

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