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COMPARISON WITH ACCURACY OF TERRESTRIAL LASER SCANNER BY USING POINT CLOUD ALIGNED WITH SHAPE MATCHING AND BEST FITTING METHODS
laser scanning time of flight phase shift shape matching natural distributions Ostia
2019/3/4
Recently operation systems of laser scanning have been obviously improved; for instance shape matching has been equipped with software on a post processing stage so measurement without any targets is ...
ROBUST CYLINDER FITTING IN THREE-DIMENSIONAL POINT CLOUD DATA
Feature Extraction Geometric Shape Laser Scanning Object Recognition Pole Modelling Robust PCA Robust Regression Surface Fitting
2017/7/12
This paper investigates the problems of cylinder fitting in laser scanning three-dimensional Point Cloud Data (PCD). Most existing methods require full cylinder data, do not study the presence of outl...
FITTING A POINT CLOUD TO A 3D POLYHEDRAL SURFACE
Contactless measurement point clouds fitting Stretched Grid method Principal Component Analysis
2017/6/19
The ability to measure parameters of large-scale objects in a contactless fashion has a tremendous potential in a number of industrial applications. However, this problem is usually associated with an...
A SOLUTION TO LOW RFM FITTING PRECISION OF PLANETARY ORBITER IMAGES CAUSED BY EXPOSURE TIME CHANGING
Rational Function Model Planetary orbiter images Sensor correction Exposure time change
2016/11/8
In this paper, we propose a new solution to the low RFM fitting precision caused by exposure time changing using sensor correction. First, we establish a new rigorous geometric model, with the same ep...
Robust Algorithm for Fitting Sphere to 3D Point Clouds in Terrestrial Laser Scanning
Laser scanning Fitting Terrestrial photogrammetry
2015/12/16
Sphere target is one of the most important tools in terrestrial laser scanning. Different point clouds obtained form different views can
be transformed into the same coordinate system frame by using ...
Generation of Roof Topologies Using Plane Fitting with RANSAC
LIDAR RANSAC building reconstruction roof topology city models rule-based approach
2015/12/4
For the acquisition of Digital Surface Models (DSM), LIDAR has proven a reliable and accurate observation technique. In contrast to the generation of a Digital Terrain Model, which can be derived from...
Robust Shape Fitting and Semantic Enrichment
Algorithms Classifi cation Geometry Knowledge Base Mathematics Point Cloud Reconstruction Registration
2015/11/13
A robust fitting and reconstruction algorithm has to cope with two major problems. First of all it has to be able to deal with noisy inputdata and outliers. Furthermore it should be capable of h...
Tractable fitting with convex polynomials via sum-of-squares
Set data the sum of squares polynomial convex piecewise polynomial piecewise polynomial set
2015/8/10
We consider the problem of fitting given data(u1, y1),...,(um, ym) where ui ∈ Rn and yi ∈ R with a convex polynomial f. A technique to solve this problem using sum of squares polynomials is pres...
3d Industrial Reconstruction by Fitting Csg Models to a Combination of Images and Point Clouds
Industrial Reconstruction Point Cloud Laser Scanning
2015/7/14
We present a method for 3D reconstruction of industrial sites using a combination of images and point clouds with a motivation of
achieving higher levels of automation, precision, and reliability. Re...
POLYNOMIAL CURVE FITTING INDICES FOR DYNAMIC EVENT DETECTION IN WIDE-AREA MEASUREMENT SYSTEMS
Power system measurements Power system monitoring Fault detection Response-based control Decision trees
2015/1/20
In a wide-area power system, detecting dynamic events is critical to maintaining system stability. Large events, such as the loss of a generator or fault on a transmission line, can compromise the sta...
3D CATENARY CURVE FITTING FOR GEOMETRIC CALIBRATION
3D catenary model least square fitting parameter correlation hanging power cables
2014/6/5
In modern road surveys, hanging power cables are among the most commonly-found geometric features. These cables are catenary curves that are conventionally modelled with three parameters in 2D Cartesi...
FITTING OF PARAMETRIC BUILDING MODELS TO OBLIQUE AERIAL IMAGES
3D reconstruction, parametric building model, fi tting plane sweeping
2014/6/5
In literature and in photogrammetric workstations many approaches and systems to automatically reconstruct buildings from remote
sensing data are described and available. Those building models are be...
Spectral Reflectance Characteristics of Different Snow and Snow-Covered Land Surface Objects and Mixed Spectrum Fitting
Snow Snow-covered land surface object Spectral characteristics Spectral fitting
2012/4/17
The field spectroradiometer was used to measure spectra of different snow and snow-covered land surface objects in Beijing area. The result showed that for a pure snow spectrum, the snow reflectance p...
耕作机器人双三点定位及其目标图拟合控制（Double Three-point Fix and Objective Diagram Fitting Controlling of Farming Robot）
耕作机器人 双三点 拟合
2009/9/25
为了提高耕作机器人控制位姿精度，提出双三点定位和目标图拟合控制方法，以双三点定位算法与耕作目标图的拟合实现机器人在自主移动过程中的位置定位和姿态定位，利用激光测距传感器和超声波接收器构建了测试系统并进行了实验。结果表明，该定位方法提高了运算速度和控制精度，随着耕作机器人行进速度的提高，其绝对误差有所增大，而相对误差明显下降，耕作机器人对凸出地面的障碍物比较敏感，增加机器人的质量会增强其稳定性。
An optimization-based computational method for surface fitting to update the geometric information of an existing B-Rep CAD model
Integration CAD/Analysis Finite Element Mesh Nurbs surface
2009/8/19
For several years, researchers have focused on improving the integration of the CAD, CAM and Analysis through a better communication between the various analysis tools. This tendency to integrate the ...