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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：An active contour model with local variance force term and its efficient minimization solver for multi-phase image
局部方差力项 活动轮廓模型 多相图像 最小化求解器
2023/5/8
In this work, we propose an active contour model with a local variance force (LVF) term that can be applied to multi-phase image segmentation problems. With the LVF, the proposed model is very effecti...
THE DATA AND SERVICES ANALYSIS OF CHINESE NSDI BASED ON BACKX MODEL
Data and Service Analysis Chinese NSDI Backx Model
2018/5/15
The data and services analysis are indispensable for the refined development of SDI. This paper, taking Chinese NSDI as a study case, analyzed the data and services advantages and shortcomings of Chin...
THIN CLOUD DETECTION METHOD BY LINEAR COMBINATION MODEL OF CLOUD IMAGE
Cloud Detection Image Features Grayscale Texture Linear Model AdaBoost Classifier
2018/5/15
The existing cloud detection methods in photogrammetry often extract the image features from remote sensing images directly, and then use them to classify images into cloud or other things. But when t...
A Reverse Hierarchy Model for Predicting Eye Fixations
Reverse Hierarchy Model Predicting Eye Fixations
2016/1/22
A number of psychological and physiological evidences suggest that early visual attention works in a coarse-to-fine way, which lays a basis for the reverse hierarchy theory (RHT). This theory states t...
Cloud Model and Hierarchical Clustering based Spatial Data Mining Method and Application
Cloud Model Hierarchical Clustering Data Mining Weather Classification
2015/12/2
The paper proposed a method of weather classification based on cloud model and hierarchical clustering. Firstly, according to the weather sampling data from FY-2C images, cluster the brightness values...
Research on Change-of-Feature Based Spatio-Temopral Object Relational Model
Feature Feature Change Event State Orient-Relational Data Model Spatio-Temporal Data Model
2015/12/1
The spatio-temporal data is our cognition to external matter and the spatio-temporal data model is the fundamental basic to manage the spatio-temporal data. The spatio-temporal object is always changi...
Self-thinning and community persistence in a simple size-structured dynamical model of plant growth
Allometricrelationships Basalstemdiameter Dynamicalmodels Persistenceconditions Plantsize Self-thinning Sizedensitydistribution Sizestructure
2015/8/27
Thispaperpresentsasize-structureddynamicalmodelofplantgrowth.Themodel takes the form of a partial differential-integral equation and includes the effects of self-shading by leaves. Closed form solutio...
A mathematical model for interpretable clinical decision support with applications in gynecology
Mathematical model for clinical decision making the system evolution the CDS system CD system
2015/8/7
Over time, methods for the development of clinical decision support (CDS) systems have evolved from interpretable and easy-to-use scoring systems to very complex and non-interpretable mathematical mod...
Estimation of ICAO Threat Model Parameters For Operational GPS Satellites
Estimation ICAO Threat Model Parameters GPS Satellites
2015/6/26
The ICAO Second Order Step threat model defines a class of signal deformations that present a potential integrity threat to GPS-based aircraft landing systems such as the Local Area Augmentation...
Ionosphere Threat to LAAS: Updated Model,User Impact,and Mitigations
Ionosphere Threat LAAS Updated Model
2015/6/26
Several severe ionosphere storms have occurred in recent years that tripped the WAAS storm detector and caused partial WAAS service shutdowns. Under extreme conditions, these spatial gradients can thr...
EXPANSION OF DYNAMIC SIMULATION MODEL FOR A DISTRIBUTED GENERATOR UNINTENTIONAL ISLANDING DETECTION SCHEME
islanding
2015/1/20
The interconnection of distributed resources requires specific voltage regulation, monitoring, protective relaying, power quality, and islanding detection. For this reason IEEE established standard IE...
Model Based Automatic Segmentation Of Tree Stems From Single Scan Data
Forestry point cloud RANSAC segmentation terrestrial laser scanning tree detection
2014/4/22
Forest inventories collect feature data manually on terrestrial field plots. Measuring large amounts of breast height diameters and tree positions is time consuming. Terrestrial laser scanning could b...
TRANSFORMING 2D CADASTRAL DATA INTO A DYNAMIC SMART 3D MODEL
3D Cadastre Hellenic Cadastre Project 3D RRRs Procedural Modeling 3D GIS Esri CityEngine
2014/4/21
3D property registration has become an imperative need in order to optimally reflect all complex cases of the multilayer reality of
property rights and restrictions, revealing their vertical compone...
SPATIAL DATA WEB SERVICES PRICING MODEL INFRASTRUCTURE
Spatial Dat Orthophoto Web Services Data Pricing Data Sharing Licensing
2014/4/21
The General Directorate of Land Registry and Cadastre (TKGM) which is the leader in the field of cartography largely continues its
missions which are; to keep and update land registry and cadastre s...
A K-Phoneme-Class based Multi-Model Method for Short Utterance Speaker Recognition
A K-Phoneme-Class Multi-Model Method Short Utterance Speaker Recognition
2013/6/28
For GMM-UBM based text-independent speaker recognition, the performance decreases significantly when the test speech is too short. Considering that the use of text information is he...