搜索结果: 1-15 共查到“工学 Polygon”相关记录15条 . 查询时间(0.171 秒)
Zone and Polygon Menus: Using Relative Position to Increase the Breadth of Multi-Stroke Marking Menus
Marking menus pie menus positionbased menus pen-based interfaces
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2016/5/24
We present Zone and Polygon menus, two new variants of
multi-stroke marking menus that consider both the relative
position and orientation of strokes. Our menus are designed
to increase menu breadt...
Generation for 3D view map using polygon shift method
Polygon Shift Method bird’s eye view shadow depth distance
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2016/5/20
The authors have developed a new method called "Polygon Shift Method" (named by the first author) that enables to generate bird's eye view of topographic landscape with shade and shadow. The Polygon S...
EXTRACTION OF OPTIMAL SKELETON OF POLYGON BASED ON HIERARCHICAL ANALYSIS
Optimal Skeleton Algorithm Hierarchical Structure
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2016/3/17
Skeleton is an important 1-D descriptor of polygon and a useful tool for advanced geometric algorithms. However the skeleton that most existing algorithms investigated is the longest one, which is not...
A CHANGE DETECTION METHOD WITH HIGH RESOLUTION IMAGES BASED ON POLYGON AUTOMATIC VALIDATING
High Resolution Image Image Understanding Change Detection Feature Extraction Texture Analysis Urban Planning Validation Object-oriented Data Model
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2015/12/31
In Beijing, the earth surface changes has reached 5 % each year, and artificial detection with high resolution images has been applied to peccancy building monitoring and road change detection. The ma...
Polygon Feature Extraction from Satellite Imagery Based on Colour Image Segmentation and Medial Axis
Feature Extraction Imagery Segmentation Semi-automation
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2015/12/4
Areal features are of great importance in applications like shore line mapping, boundary delineation and change detection. This research work is an attempt to automate the process of extracting featur...
QUALITY ASSESSMENT FOR POLYGON GENERALIZATION
generalization polygon data quality assessment
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2015/9/28
Different methods for map generalization have been developed. However, there are only a few publications that discuss the automatic quality assessment of generalized maps. This problem becomes crucial...
A QUALITY ASSESSMENT METHOD FOR 3D ROAD POLYGON OBJECTS
Quality Assessment Quality Element 3D Road Polygon LiDAR
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2015/9/21
With the development of the economy, the fast and accurate extraction of the city road is significant for GIS data collection and update, remote sensing images interpretation, mapping and spatial data...
Comparison of multi-scale images of an agricultural land using polygon-based classification techniques
Polygon-Based Image Classification High Resolution Agricultural
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2015/8/20
Polygon-based classification was performed on multi-scale images of SPOT4 XS, SPOT5 XS, IKONOS XS, QuickBird XS and
QuickBird Pansharpaned (PS) covering an agricultural area located in Karacabey, Tur...
Polygon-based True Orthophoto Generation
Aerial images Orthophoto images elevation models,
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2015/7/7
Obscured areas are serious defects in large-scale and urban orthophotos. In recent years several rectification schemes minimizing
these defects were proposed. These methods use raster-based algorithm...
AN AGENT-BASED FRAMEWORK FOR POLYGON GENERALIZATION
AGENT-BASED FRAMEWORK POLYGON GENERALIZATION
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2015/3/16
AN AGENT-BASED FRAMEWORK FOR POLYGON GENERALIZATION.
CHANGE DETECTION USING THE INTEGRATION OF REMOTE SENSING AND GIS: A POLYGON BASED APPROACH
Change Detection RS/GIS Integration Image Analysis Database Updating
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2014/12/30
A per polygon image analysis scheme for detecting the changes in land cover conditions within existing land use boundaries stored as vector polygons in a Geographic Information System (GIS) is describ...
Panoramic rendering-based polygon extraction from indoor mobile LiDAR data
Indoor mobile mapping Point-cloud Point-based rendering Point cloud clustering 3D polygon extraction
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2014/7/23
In this paper, we propose a method for panoramic point-cloud rendering-based polygon extraction from indoor mobile LiDAR data. Our aim was to improve region-based point-cloud clustering in modeling af...
A new method of quality improvement for quadrilateral mesh based on small polygon reconnection
Mesh improvement Topological clean-up Quadrilateral mesh Small polygon reconnection
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2012/2/24
In this paper, a new method of topological cleanup for quadrilateral mesh is presented. The method first selects a patch of mesh around an irregular node. It then seeks the best connection of the sele...
基于回转车床的正多面体车削及刀尖轨迹仿真（Simulation on Regular Polygon Forming and Locus of Knifepoint Based on Rotary Cutting Machine Tool）
正多边形 回转车削 边长 直线度 仿真
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2009/12/28
通过对一种正多边形回转车削简易装置的分析，阐述了正多边形回转车削成形原理，并建立了刀尖相对于工件的轨迹方程。在此基础上论述了正多边形边长误差的产生及修正，并对其直线度误差的产生作了较详细的分析，为保证回转车削多面体零件的精度提供了理论依据，提高了多面体加工的效率。使用VB语言编程对刀尖轨迹进行了动态仿真，从仿真得到的刀尖轨迹曲线，更好地证明了正多边形轨迹在回转车床上的实现。
Buckling loads of columns of regular polygon cross-section with constant volume and clamped ends
Buckling load constant volume strongest column tapered column
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2009/2/20
A numerical method is developed for calculating the buckling loads of tapered columns of regular polygon cross-section with constant volume and both clamped ends. The linear, parabolic and sinusoidal ...