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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...
CROSS VALIDATION ON THE EQUALITY OF UAV-BASED AND CONTOUR-BASED DEMS
UAV Photogrammetry Digital Elevation Model Topographic surveying Ground Control Points Accuracy analysis
2018/5/15
Unmanned Aerial Vehicles (UAV) have been widely used for Digital Elevation Model (DEM) generation in geographic applications. This paper proposes a novel framework of generating DEM from UAV images. I...
AERIAL OBJECT RECOGNITION ALGORITHM BASED ON CONTOUR DESCRIPTOR
vision system object recognition Euler angles geosphere contour descriptor
2017/6/19
This paper describes the image recognition algorithm for on-board and stationary vision system. Suggested algorithm is intended to recognize the aerial object of a specific kind using the set of the r...
SAR IMAGE AND OPTICAL IMAGE REGISTRATION BASED ON CONTOUR AND SIMILARITY MEASURES
Contour Extraction Morphologic Methods Affine Transforms Residual Deformations Multisensor Registration Similarity Measure
2016/3/17
Image registration is concerned with the establishment of correspondence between the images of the same scene. It is a challenge problem especially when multispectral/multisensor images areregistered....
ENHANCING STUDENTS’ ABILITY IN READING CONTOUR MAPS USING GIS
Digital Terrain Models E-Learning Map Reading
2016/1/29
Terrain relief is an important feature of geographic environment and a major element of topographic maps. Contour lines are widely adopted as representation of terrain relief in traditional maps. In g...
ACCURACY ASSESSMENT OF CONTOUR INTERPOLATION FROM 1:50,000 TOPOGRAPHICAL MAPS AND SRTM DATA FOR 1:25,000 TOPOGRAPHICAL MAPPING
Topographic mapping Map revision Shuttle Radar Topographic Mission data Contour interpolation Contour accuracy assessment
2016/1/3
One major problem engendered by poverty in less-developed countries is that of inability of such countries to carry out fresh medium-scale topographical mapping at regular time intervals usingexpensiv...
A Multi-Direction Extracting Method of the Building Contour Based on Point Cloud of the Terrestrial Laser Scanner
Terrestrial Laser scanning Pointe Cloud Images Multi-direction
2015/12/16
Mainly methods used currently for point cloud in the terrestrial three-dimensional laser scanner are to processing small industrial
parts, or sculptures, in which the data format and the correspondin...
An Automatic Contour Based Detection of Terrestrial Objects from Aerial Imagery Data
Automation Feature Extraction Image Segmentation Contour Matching
2015/12/16
The original approach to image matching is proposed. The method itself can be classified as contour matching, based on boundary pattern analysis technique. Contours extraction technique is reinforced ...
Automatic Building Extraction from High Resolution Satellite Images Using Active Contour Mode
Automatic Building Extraction Resolution Satellite Images Active Contour Mode
2015/12/8
Various governmental organizations need accurate, correct and up to date information for optimization of resource and service management. In this issue, geospatial information is very important. Geosp...
Contour Clustering Analysis for Building Reconstruction from LIDAR Data
Contour Clustering,Shape Matching Building Reconstruction LIDAR
2015/12/8
Automatic building reconstruction from LIDAR data has become a hot topic for several years. Many methods and algorithms have been put forward to reconstruct the building models, such as of flat roof, ...
Building Extraction from High Resolution Color Imagery Based on Edge Flow Driven Active Contour And JSEG
Building Extraction Active contour Level set method Segmentation Edge flow JSEG
2015/12/4
Building extraction and delineation is one of the most salient problems in cartographic features extraction. This paper presents a novel framework for reliable and accurate building extraction from hi...
A New Approach for Checking Elevation Contradiction of Contour elevation
GIS Algorithms Elevation Contradiction of Contours Quality Checking for Spatial Data
2015/12/3
The elevation contradiction of contours is an important question in the quality checking for spatial data in geographical information system. This paper presents a new approach to check the elevation ...
Incremental Contour Line Fusion Based on Line/Line Topological Relations
Incremental Updating Line/line Topological Relations Characteristic Object Local Contour Fusion
2015/12/1
Incremental contour fusion plays a very important role in updating topographic database. The most popular fusion methods in current use depend on manual work basically, in which it results in large wo...
An Indirect Generalization of Contour Lines Based on DEM Generalization Using the 3D Douglas-Peucker Algorithm
Cartography GIS, Algorithm DEM/DTM Geomorphology Global Generalization
2015/11/23
In order to simplify the generalization of contour lines during the compilation of maps at smaller scales, an indirect method is put forward based on the generalization of the corresponding DEM first ...
PRELIMINARY STUDIES ON CONTOUR TREE-BASED TOPOGRAPHIC DATA MINING
Spatial data mining Spatial relations of contour lines Contour tree
2015/8/10
After many years of intensive investigation and mapping of the topography, a large number of topographic maps were produced by national mapping agencies. The explosive growth and wide availability of ...