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ACCURACY OF FOREST PARAMETERS DERIVED FROM MEDIUM FOOTPRINT LIDAR UNDER OPERATIONAL CONSTRAINTS
LiDAR canopy height model (CHM) canopy closure degree of composition National Forest Inventory (NFI)
2015/11/10
The objective of this study is to test the feasibility of nation-wide medium footprint airborne laser scanning (ALS) data forderivation of forest parameters. The comparison of canopy closure as one im...
AUTOMATIC RELATIVE ORIENTATION OF TERRESTRIAL LASER SCANS USING PLANAR STRUCTURES AND ANGLE CONSTRAINTS
Relative orientation registration range images terrestrial laser scanning
2015/11/10
The relative orientation of independently acquired terrestrial laser scan point clouds is an important task. If good starting values are available, well-known iterative algorithms exist to determine t...
TOWARDS SPECIALIZED INTEGRITY CONSTRAINTS FOR SPATIAL DATACUBES
Integrity Constraint Spatial Datacube Spatio-temporal Data Quality SOLAP Multidimensional Database
2015/9/28
Spatial datacubes (also called "spatial multidimensional databases") are the cornerstone of the emerging Spatial On-Line Analytical Processing (SOLAP) technology. They are aimed at supporting Geograph...
CONSISTENT ESTIMATION OF BUILDING PARAMETERS CONSIDERING GEOMETRIC REGULARITIES BY SOFT CONSTRAINTS
Building Reconstruction Parameter Estimation Constraints
2015/8/31
This paper describes a model for the consistent estimation of building parameters that is a part of a method for automatic building reconstruction from airborne laser scanner (ALS) data. The adjustmen...
CONSISTENT ESTIMATION OF BUILDING PARAMETERS CONSIDERING GEOMETRIC REGULARITIES BY SOFT CONSTRAINTS
Building Reconstruction Parameter Estimation Constraints
2015/8/28
This paper describes a model for the consistent estimation of building parameters that is a part of a method for automatic building reconstruction from airborne laser scanner (ALS) data. The adjustmen...
CONSTRAINTS FOR MODELLING COMPLEX OBJECTS
Weak primitives constraint equation systems constraint graphs Grobner bases
2015/8/7
When complex scenes are modelled using measured data, such as mass data from laser scanners, the objects generated do not only have to fit the data, but also have to fulfill additional constraints, li...
THE PERFORMANCE ANALYSIS OF AN AKF BASED TIGHTLY-COUPLED INS/GPS INTEGRATED POSITIONING AND ORIENTATION SCHEME WITH ODOMETER AND NON-HOLONOMIC CONSTRAINTS
INS GPS Tightly-coupled AKF non-holonomic constraints
2014/4/29
INS/GPS integration scheme can overcome the shortcoming of GPS or INS alone to provide superior performance, thus this study implements a tightly-coupled INS/GPS integration scheme using AKF as the co...