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EXTRACTION OF BUILDING ROOF EDGES FROM LIDAR DATA TO OPTIMIZE THE DIGITAL SURFACE MODEL FOR TRUE ORTHOPHOTO GENERATION
LiDAR Aerial photos Edge Detection DSM True Orthophoto
2018/6/5
Various kinds of urban applications require true orthophotos. True orthophoto generation requires a DSM (Digital Surface Model) to project the photo orthogonally and minimize geometric distortion due ...
A FAST AND ROBUST ALGORITHM FOR ROAD EDGES EXTRACTION FROM LIDAR DATA
Mobile Mapping Systems (MMS) LiDAR data Point clouds Road edges extraction Rough plane Refined plane
2016/11/11
Fast mapping of roads plays an important role in many geospatial applications, such as infrastructure planning, traffic monitoring, and driver assistance. How to extract various road edges fast and ro...
A Method for Urban Buildings Change Detection Based on Vertical Edges Extraction
Vertical Edge Change Detection Vanishing Point Photogrammetry Edge Extracting Line Detection
2015/12/9
This paper proposes a method for buildings change detection. Vertical edges of buildings are extracted in pairs of aerial images respectively, taking advantage of the character that vertical edges int...
We address the problem of computing a general-purpose early visual representation that satisfies two criteria. 1) Explicitness: To be more useful than the original pixel array, the representation must...
Monoscale Ridgelets for the Representation of Images with Edges
Edges Partitioning Local Fourier Transform (JPEG) Ridge functions Ridgelets Radon transform Nonlinear approximation
2015/6/17
In a previous paper [1], the author introduced a new system for representing multivariate functions, namely, the ridgelets. In a following article [3], ridgelets were shown to be optimal for represent...
Curvelets–A Surprisingly Effective Nonadaptive Representation For Objects with Edges
Curvelets Nonadaptive Representation Objects with Edges
2015/6/17
It is widely believed that to efficiently represent an otherwise smooth object with discontinuities along edges, one must use an adaptive representation that in some sense ‘tracks’ the shape of the di...
Ridgelets and Their Derivatives:Representation of Images with Edges
Ridgelets Derivatives Images with Edges
2015/6/17
This paper reviews the development of several recent tools from computational harmonic analysis. These new systems are presented under a coherent perspective, namely, the representation of bivariate f...
Recovering Edges in Ill-Posed Inverse Problems:Optimality of Curvelet Frames
Ill-Posed Inverse Problems Regularization Singular Value Decomposition Radon Transform Deconvolution Edge Edge-Preserving Regularization Wavelets Curvelets Ridgelets Wavelet-Vaguelette-Decomposition Wavelet Shrinkage Minimax Estimation Optimal Rates of Convergence White Noise Model
2015/6/17
We consider a model problem of recovering a function f(x1, x2) from noisy Radon data. The function f to be recovered is assumed smooth apart from a discontinuity along a C2 curve – i.e. an edge. We us...
SURFACE DISCONTINUITY MODELLING BY LSM THROUGH PATCH ADAPTATION AND USE OF EDGES
edges least squares matching modelling
2015/6/1
This paper handles the aspect of least squares matching (LSM) for DSM generation and focuses mainly on the exploitation of edge
information in the least squares approach. The mathematical model of L...
AUTOMATIC EXTRACTION OF ROAD SURFACE AND CURBSTONE EDGES FROM MOBILE LASER SCANNING DATA
Automation Extraction Laser scanning Mapping Mobile Surface Urban
2015/5/21
We present a procedure for automatic extraction of the road surface from geo-referenced mobile laser scanning data. The basic assumption of the procedure is that the road surface is smooth and limited...
SUBPIXEL-PRECISE EXTRACTION OF LINES AND EDGES
Edge Detection Line Detection Subpixel Precision Subpixel Accuracy Bias
2014/12/31
Novel approaches to extract curvilinear structures, i.e., lines and edges, from 2D images are proposed. For lines, explicit geometric models for line profiles are used to analyze their behavior in sca...
Predict Edges in Fliker Social Network Using Data Mining Method
Social Network Data Mining Link Prediction Regression
2013/1/28
Using social networking services is becoming more popular day by day. The websites of the social networks like face-book currently are among the most popular internet services just after giant portals...
Identifying groups of critical edges in a realistic electrical network by multi-objective genetic algorithms
Genetic algorithm Multi-objective optimization Network performance measure Power system vulnerability
2012/4/22
In this paper, an analysis of the vulnerability of the Italian high-voltage (380 kV) electrical transmission network (HVIET) is carried out for the identification of the groups of links (or edges, or ...
The wave and vibratory power transmission in a finite L-shaped Mindlin plate with two simply supported opposite edges
Finite L-shaped Mindlin plate Active power flow Reactive power flow Wave approach
2012/2/29
In this paper, wave and vibratory power transmission in a finite L-shaped Mindlin plate with two simply supported opposite edges are investigated using the wave approach. The dynamic responses, active...
Bending Vibration of Two Edges of a Simple Supported Flat Viaduct Road Part
Bending vibration Natural frequency Rectangular plate Raleigh-Ritz technique
2009/10/13
Viaduct roads have wide application in big cities with high trac loads in order to decrease the tracdensity and to connect roads within cities to highways. Viaduct roads are constructed with steel s...