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IMPROVE ON DIJKSTRA SHORTEST PATH ALGORITHM FOR HUGE DATA
GIS Network Network analysis Shortest path analysis Dijkstra
2016/3/17
This paper introduces the classical Dijkstra algorithm in detail, and illustrates the method of implementation of the algorithm and the disadvantages of the algorithm: the network nodes requiresquare-...
AN ALGORITHM ABOUT ASSOCIATION RULE MINING BASED ON SPATIAL AUTOCORRELATION
Geographical information science Statistical analysis Data mining Geography Spatial association rule spatial auto-correlation
2015/12/23
Most spatial data in GIS are not independent, they have high autocorrelation. For example, temperatures of nearby locations are often related. Most of the spatial association rule mining algorithms de...
A Multiresolution Remotely Sensed Image Segmentation Method Combining Rainfalling Watershed Algorithm and Fast Region Merging
Multiresolution Image Segmentation Method Algorithms
2015/12/17
Nowadays object oriented image analysis becomes a hot issue in the field of image processing and interpretation because of its more robust noise removing ability, more abundant image features and expe...
An Improved Real 3D A* Algorithm for Difficult Path Finding Situation
GIS Three-dimensional A* Algorithms Urban Space
2015/12/17
Path finding requirement for people under restricted situation is difficult to meet. Traditional routing solution such as A* algorithm is not suitable for the restricted area. For routing requirement ...
A Algorithm on Branches Number of a Tree Based on Extended Fractal Square Root Law
Cartography Visualization Digital Landscape Model Computer Vision
2015/12/16
It is an important question to calculate number of grown branches in a tree in visualization of trees growth. The number of growth branches is determined by visual effect or developer′s experience. Th...
Road Extraction from SAR Image Using an Improved Statistical Algorithm
Road extraction Feature extraction SAR image Speckle statistics Phase grouping
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 ...
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)
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...
Edge Extraction Algorithm Based on Linear Perception Emhancement
Image understanding Edge detection Computer Vision Cluster Analysis Urban planning Aerial photogrammetry
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...
Case Study of the 5-Point Algorithm for Texturing Existing Building Models from Iinfrared Image Sequences
Urban Image Acquisition Texture Extraction Thermal Infrared
2015/12/9
Today, thermal inspections of buildings are normally done in recorded single infrared images directly. Thus, no 3d references of found objects and features like i.e. heating pipes or leakages is possi...
A Fast Object-to-Image Best Scanline Search Algorithm for Airborne Linear Pushbroom Image Processing
Airborne Pushbroom Images Object-to-image Coordinate Computation Best Scanline Search
2015/12/8
Airborne linear pushbroom cameras have become one of the most important imaging sensors in today’s photogrammetry and remote sensing practices to collect high-resolution multi-channel seamless image s...
A New Restitution Algorithm to Solve the Multipath Fading Problem in Aerial Communication
Aerial Communication Information Theory Simulation Restitution Algorithm
2015/12/2
The thesis focuses on the multipath fading problem in aerial communication. At the beginning of this paper, we build the model of the aerial communication channel and complete the analysis on the esse...
Suitable Region Selection Algorithm Based on Multiple Restrictions
Decision Support Systems Topological Analysis Image Understanding
2015/12/2
Extracting the latent geo-information and provide decision support for the users is very important function in GIS(Geographic Information System). GIS is different from other mapping system (MS) in th...
on a New Model and Algorithm to Estimate Geographical Similarity between Document and Query in GIR System
Spatial Information Science GIS Information Service Information Retrieval
2015/12/2
The usage of single geographical footprint model in existing Geographical Information Retrieval (GIR) system will cause many problems like overestimation or underestimation of the geographical scopes ...
Automatic Interpretation of Vector Databases with a Raster-based Algorithm
GIS Analysis Vector Interpretation Data Mining
2015/12/2
Clustering spatial data can be interpreted as a segmentation or classification process for finding meaningful patterns in geospatial databases. Such patterns can be used to adapt further algorithms to...
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 ...