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Detection of Subtle Ridgelines from Laser Scanning Data
airborne laser scanning feature extraction breaklines curvature active contours geomorphology
2015/12/4
Airborne laser scanning technology is primarily perceived as a means for gathering detailed three-dimensional information about the surface and objects on it. It is therefore not surprising that the m...
A Multi-Photo Least Squares Matching Algorithm for Urban Area DEM Refinement Using Breaklines
DEM least squares adjustment least squares matching breaklines occlusion
2015/12/4
High quality digital elevation models (DEMs) are required for a large number of urban applications such as; telecommunication, urban development, and city planning and management. Sudden changes in su...
Linear Constraints in Two-View Multiple Homography Estimation of Uncalibrated Scenes
Geometry Vision Homography Parameter estimation Video
2015/12/4
In this contribution, we present a method for direct linear estimation of multiple homographies and optimization of estimation results by enforcing topological constraints by means of connected compon...
Trends in Digital Photogrammetry from an International Enterprise Perspective
Digital camera mapping work flow data management system configuration capacity building
2015/12/3
The internet hype for aerial and satellite images, kicked off by Google (Google Earth), Microsoft (Virtual Earth), and others, is giving the Photogrammetry, Remote Sensing, and GIS markets a tremendou...
Digital Earth Science Platform:DESP/CAS
Digital Earth Prototype System Digital Earth Science Platform
2015/12/3
On the basis of Digital Earth Prototype System（DEPS/CAS）version 1.0, the Center for Earth Observation and Digital Earth of the Chinese Academy of Sciences is developing the Digital Earth Science Platf...
Indoor SPATIAL Analysis Using Space Syntax
Accessibility 3D GIS 3D models Connectivity Space syntax
2015/12/3
Accessibility typically has been applied to urban or transportation problems two dimensionally. However, in large complex buildings as shopping centers or hospitals, inter-spatial accessibility among ...
ERDAS TITAN:Connect and Share Your World
Visualization Data Information Internet Metadata Software Dynamic Global
2015/12/3
Geospatial information users have the need to ingest data into a variety of desktop, Internet and 3D virtual globe applications they use in their daily work. Utilizing streaming data technology via ge...
Connected 2D and 3D Visualizations for the Interactive Exploration of Spatial Information
Geovisualization Three-dimensional representation Interactive
2015/12/3
This paper describes the concepts and the successful prototypal implementation of interactively connected 2D information visualizations and data displays in 3D virtual environments for the interactive...
Analysis on Geographical Changes and Research on Spatio-temporal Patterns
Spatio-temporal Change Analysis Spatio-temporal Change Pattern Change Detection
2015/12/3
As efforts grow to develop spatio-temporal database systems and temporal geographic information systems that are capable of conveying how geographic phenomena change, it is urgent to analyze the impet...
A Robust Estimation Algorithm of Epipolar Geometry through the Hough Transform
Computer vision Fundamental Matrix Epipolar Geometry Collinear Point Redundancy the Hough Transform
2015/12/3
Fundamental matrix is an algebraic expression of the epipolar geometry, and plays a very important role in the computer vision. It is all along an important research topic that how to raise the precis...
Generating Progressively Spatial Data Streaming for Adaptively Mobile Visualization
Progressive Transmission Visualization Compression Simplification Vector Data
2015/12/3
This paper proposes and implements a new solution for generating progressive vector lines and polygons data streaming for adaptive visualizations on small mobile devices. The proposed solution firstly...
Combining Algorithm with Knowledge for Way-finding
Algorithm Knowledge Wayfinding the Shortest Path Network Case
2015/12/3
On the basis of analyzing the advantages and disadvantages of the shortest path algorithm and the problem solving based on knowledge method, it is clearly showed that neither the algorithm, which prov...
A Three-dimensional Error Model of DEM Based on the Reconstruct Contours
DEM contour line precision analysis three-dimensional model error mean square error
2015/12/3
In this paper, a three-dimensional error model of grid digital elevation model (DEM) is proposed based on the reconstructed contours. Though analyzing the construction of three-dimensional error model...
Simulation and Model Validation of Positional Uncertainty of Line Feature on Manual Digitizing a Map
Simulation Digital Distributed Model Quality Error Accuracy
2015/12/3
The line feature is divided into two endpoints and line entity in this paper. The error model of independent point has been studied thoroughly, but study on positional uncertainty of endpoint based on...
Quality Assessment of 3D Building Data by 3D Surface Matching
Data quality Quality measures 3D building surface matching Co-registration Point cloud
2015/12/3
This is a cooperative work between the Chair of Photogrammetry and Remote Sensing of ETH Zurich and the Research department of Ordnance Survey, called “Quality Assessment of 3D Building Data”. The pro...