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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
2022/11/23
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...
GEOPHYSICAL PARAMETER RETRIEVAL FOR MICROWAVE C BAND SYNTHETIC APERTURE RADAR (SAR) DATASET USING INTEGRAL EQUATION MODEL
Microwave SAR Geophysical Parameters IEM Modelling
2018/11/19
The microwave remote sensing is highly useful, as it provides synoptic observation of the Earth’s surface or planetary bodies, regardless of day or night and the atmospheric conditions, propagation th...
THE DATA AND SERVICES ANALYSIS OF CHINESE NSDI BASED ON BACKX MODEL
Data and Service Analysis Chinese NSDI Backx Model
2018/4/30
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...
THE LOW BACKSCATTERING OBJECTS CLASSIFICATION IN POLSAR IMAGE BASED ON BAG OF WORDS MODEL USING SUPPORT VECTOR MACHINE
Low Backscattering Objects Bag of Words SIFT features Support Vector Machine
2018/4/30
Due to the forward scattering and block of radar signal, the water, bare soil, shadow, named low backscattering objects (LBOs), often present low backscattering intensity in polarimetric synthetic ape...
THIN CLOUD DETECTION METHOD BY LINEAR COMBINATION MODEL OF CLOUD IMAGE
Cloud Detection Image Features Grayscale Texture Linear Model AdaBoost Classifier
2018/4/30
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...
EXTRACTION OF BUILDING ROOF EDGES FROM LIDAR DATA TO OPTIMIZE THE DIGITAL SURFACE MODEL FOR TRUE ORTHOPHOTO GENERATION
LiDAR Aerial photos Edge Detection DSM True Orthophoto
2018/3/30
Various kinds of urban applications require true orthophotos. True orthophoto generation requires a DSM (Digital Surface Model) to project the photo orthogonally and minimize geometric distortion due ...
Model Makes Designing New Antennas Orders of Magnitude Faster
Designing Antennas Orders Magnitude Faster
2016/4/20
We propose a method for modeling planar multiport antennas of arbitrary shape using characteristic mode theory (CMT) without physically including the feeds. The characteristic modes of the feed-free s...
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...
LIDAR and Pictometry Images Integrated Use for 3D Model Generation
Photogrammetry LIDAR DTM 3D Model
2015/12/3
The territorial data acquisition technologies vary second of the final product scale use. So it can be passed that the classical topographical survey or terrestrial laser scanners survey for engineeri...
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...
Research on Precise Geometry Model of Synthetic Aperture Radar Interferometry
InSAR Geometry Model DEM Correction GCP
2015/11/20
InSAR, a new branch of Remote Sensing technology, has developed remarkably in recent years. Many researches have showed that high precision is always one of the most important goals in its development...
MODEL REFINEMENT BY INTEGRATED PROCESSING OF LASER SCANNING AND PHOTOGRAMMETRY
LIDAR Point Cloud LASERMAP Modeling Facade Urban
2015/10/8
For tasks such as the generation of realistic visualizations from pedestrian viewpoints in virtual reality and multimedia applications,
urban models extracted from airborne data are too coarse and t...
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 new statistical model for routing of gate arrays is described. The model takes into consideration the effect of gate utilization on wiring area requirement. Model computed wiring area estimates sugg...