搜索结果: 1-15 共查到“图形图象复制技术 Extraction”相关记录18条 . 查询时间(0.109 秒)
Object-oriented modelling for the extraction of geometry, texture and reflectance from digital images
Semi-Automatic Extraction System CORBA JavaBeans GIS CSG
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2016/5/20
A semi-automatic system for extracting topographic features is being migrated to an object-oriented design for better maintainability. For that purpose an object-oriented model of the extracted object...
Semi-Automatic Extraction of Features from Digital Imagery
Image Segmentation Semi-Automatic Feature Extraction Fast-Marching Level-Set
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2015/12/16
Aerial photographs have been evaluated manually by the operators for a long time for the extraction of the vector data. The development of computer technology and digital image processing technologies...
Automatic Object Extraction for Change Detection and GIS Update
Object Extraction Image Understanding Evaluation Disaster Management
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2015/12/16
In this paper we will revise the recent developments in the field of automatic object extraction for change detection and GIS update under different aspects: (1) level of automation; (2) available sen...
Semi-Automatic Extraction of Different-Shaped Road Centerlines from Ms and Pan-Sharped IKONOS Images
Image processing Road extraction Space photogrammetry Clustering Updating
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2015/12/9
In this work we develop semi-automatic road extraction system for updating and storage road network data bases. Combination of some of the existing road extraction techniques such as spectral and spat...
Road Extraction from SAR Image Using an Improved Statistical Algorithm
Road extraction Feature extraction SAR image Speckle statistics Phase grouping
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2015/12/9
An efficient statistical algorithm of automatic extracting road from SAR images is devised in this paper. First, an feature detecting operator is used to find the road candidate. Then another smaller ...
Application of Neural Networks, Image Processing and Cad-Based Environments Facilities in Automatic Road Extraction and Vectorization from High Resolution Satellite Images
Automatic CAD Image processing High resolution images Neural networks Road extraction Vectorization
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2015/12/9
In this article a new procedure that was designed to extract road centerline from high resolution satellite images, is presented. The results (road Networks) are fully structured in vector formed in C...
Research on the Building Shadow Extraction and Elimination Method
Building Shadow Extraction Shadow Removal Multiple Constraints Edge Detection
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2015/12/9
This paper first generalizes the significance and present research situation of the building shadow extraction and elimination method. Then, an approach of automatic extracting shadows of building fro...
Road Extraction for the Update of Road Database in Suburban Areas
Image understanding Road extraction Computer Vision Feature extraction Updating
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2015/12/9
This paper deals with road extraction in suburban areas from high resolution aerial images. The extraction results are intended to be used for updating a road database. The road extraction algorithm f...
Vehicle Extraction Using Histogram and Genetic Algorithm Based Fuzzy Image Segmentation from High Resolution UAV Aerial Imagery
Vehicle Extraction Histogram Genetic Algorithm Image Segmentation Unmanned Aerial Vehicle (UAV)
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2015/12/9
In this paper, an approach for extracting vehicles from UAV aerial imagery is given. The approach is based on a fuzzy segmentation algorithm, which combine fuzzy c-partition and genetic algorithm, and...
Road Extraction from High Resolution Remote Sensing Image Based on Mathematics Morphology and Seed Growth
road extraction high resolution remote sensing image seed growth mathematics morphology
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2015/12/9
Extracting the targets information from the remote sensing image has become the important method of updating the spatial geography information. With the development of spatial technology, sensor techn...
Road Extraction from High-Resolution Remote Sensing Image Based on Phase Classification
Road network extraction High-resolution remote sensing image Characteristic extraction
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2015/12/9
It is still an open problem to extract road feature from high-resolution remote sensing image, although this topic had been intensively investigated and many methods had been put forwards. All works f...
Edge Extraction Algorithm Based on Linear Perception Emhancement
Image understanding Edge detection Computer Vision Cluster Analysis Urban planning Aerial photogrammetry
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2015/12/9
Edges are very important clues for building reconstruction in city-modeling. But some weak edges, such as roofs’ ridges, are often similar to the background in intensity which causes low gradient magn...
Automatic Building Extraction from High Resolution Satellite Images Using Active Contour Mode
Automatic Building Extraction Resolution Satellite Images Active Contour Mode
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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...
Terrestrial Image Based 3D Extraction of Urban Unfoliaged Trees of Different Branching Types
Image Understanding 3-D Feature Extraction Computer Vision
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2015/12/4
In this paper we propose extensions to a generative statistical approach for three-dimensional (3D) extraction of urban unfoliaged trees of different branching types from terrestrial wide-baseline ima...
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...