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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Some new algorithm developments on highly stiff stable schemes and on a SAV based approach for optimization problems
高刚性稳定方案 基于SAV 优化方法 新算法发展
2023/11/29
In the first part, I shall present a new way to construct highly stiff stable schemes. Traditional time discretization schemes are usually based on Taylor expansions at $t_{n+\beta}$ with $\beta\in [0...
PARTICLE SWARM OPTIMIZATION BASED APPROACH TO ESTIMATE EPIPOLAR GEOMETRY FOR REMOTELY SENSED STEREO IMAGES
Fundamental Matrix Particle Swarm Optimization Epipolar Geometry Remote Sensing Random Sample Consensus Stereo Vision
2019/2/27
A novel particle swarm optimization based approach for the estimation of epipolar geometry for remotely sensed images is proposed and implemented in this work. In stereo vision, epipolar geometry is d...
A METADATA BASED APPROACH FOR ANALYZING UAV DATASETS FOR PHOTOGRAMMETRIC APPLICATIONS
UAV Metadata Filtration Photogrammetry
2018/6/4
This paper proposes a methodology for pre-processing and analysing Unmanned Aerial Vehicle (UAV) datasets before photogrammetric processing. In cases where images are gathered without a detailed fligh...
OPEN PIT MINE 3D MAPPING BY TLS AND DIGITAL PHOTOGRAMMETRY: 3D MODEL UPDATE THANKS TO A SLAM BASED APPROACH
TLS digital photogrammetry open pit mine SLAM mapping automatic localization
2018/6/5
The state of the art of 3D surveying technologies, if correctly applied, allows to obtain 3D coloured models of large open pit mines using different technologies as terrestrial laser scanner (TLS), wi...
3D MODELING OF TWO LOUTERIA FRAGMENTS BY IMAGE-BASED APPROACH
Photogrammetry 3D Modelling Archaeology Pottery Fragment
2017/6/20
The paper presents a digital approach to the reconstruction and analysis of two small-sized fragments of louteria, a kind of large terracotta vase, found during an archaeological survey in the south o...
A KNOWLEDGE-BASED APPROACH ON GLOBELAND30 INCREMENTAL UPDATING:A CASE STUDY OF BUILT-UP AREA
Globeland30 incremental updating Built-up area Segmentation Domain knowledge
2016/12/1
Global land cover/land use product in multiple periods is pivotal to understand the complex drivers and mechanisms in global climate change, and to forecast future land use trends in sustainable devel...
CHANGE DETECTION IN UAV VIDEO MOSAICS COMBINING A FEATURE BASED APPROACH AND EXTENDED IMAGE DIFFERENCING
change detection image differencing directed change mask video mosaicking image registration UAV
2016/11/23
Change detection is an important task when using unmanned aerial vehicles (UAV) for video surveillance. We address changes of short time scale using observations in time distances of a few hours. Each...
A FUZZY LOGIC-BASED APPROACH FOR THE DETECTION OF FLOODED VEGETATION BY MEANS OF SYNTHETIC APERTURE RADAR DATA
Fuzzy logic Flooded vegetation Synthetic Aperture Radar (SAR) Data fusion TerraSAR-X
2016/11/23
In this paper an algorithm designed to map flooded vegetation from synthetic aperture radar (SAR) imagery is introduced. The approach is based on fuzzy logic which enables to deal with the ambiguity o...
A METHOD TO ESTIMATE TEMPORAL INTERACTION IN A CONDITIONAL RANDOM FIELD BASED APPROACH FOR CROP RECOGNITION
Conditional Random Fields Crop Recognition Multitemporal Image Analysis
2016/11/23
This paper presents a method to estimate the temporal interaction in a Conditional Random Field (CRF) based approach for crop recognition from multitemporal remote sensing image sequences. This approa...
AN ENERGY-BASED APPROACH FOR DETECTION AND CHARACTERIZATION OF SUBTLE ENTITIES WITHIN LASER SCANNING POINT-CLOUDS
Energy-based methods Level-set Terrestrial Laser Scanning Sinkholes Geomorphology Feature Extraction
2016/7/27
Airborne laser scans present an optimal tool to describe geomorphological features in natural environments. However, a challenge arises in the detection of such phenomena, as they are embedded in the ...
A SEGMENT-BASED APPROACH FOR DTM DERIVATION OF AIRBORNE LIDAR DATA
LIDAR DTM Segment-based Topological
2016/7/4
With the characteristics of LIDAR system, raw point clouds represent both terrain and non-terrain surface. In order to generate DTM, the paper introduces one improved filtering method based on the seg...
TOWARDS SEMANTICALLY ENRICHED 3D CITY MODELS: AN ONTOLOGY-BASED APPROACH
ontologies interoperability CityGML
2016/2/29
Various urban models have been developed and are used in the urban domain, to perform for example air quality calculation,
building energy consumption analysis or traffic simulation. The use of urban...
A GIS-BASED APPROACH TO SPATIO-TEMPORAL ANALYSIS OF URBAN AIR QUALITY IN CHENGDU PLAIN
Geographical information science Statistical analysis Computer Vision Spatial-temporal analysis Air quality
2016/1/3
Environmental pollution of urban areas is one of key factors that state authorities and local agencies have to consider in the decisionmaking process. Understanding temporal and spatial distribution o...
GIS-BASED APPROACH FOR CHANGE AND PREDICTION OF SOIL EROSION
USLE DEM TIN Soil and Water Conservation
2015/12/28
The paper has the goal to evaluate if the Universal Soil Loss Equation (USLE)applied using thematic paper maps and a DEM is sufficient to generate a model to map and predict the influences on the envi...
SPATIAL DATA INTEGRATION USING ONTOLOGY-BASED APPROACH
SDI Ontology Ubi GIS Data integration Semantic Web
2016/1/15
In today's world, the necessity for spatial data for various organizations is becoming so crucial that many of these organizations have begun to produce spatial data for that purpose. In some circumst...