搜索结果: 1-8 共查到“工程测量技术 models”相关记录8条 . 查询时间(0.257 秒)
The scheme for the database building and updating of 1:10000 Digital Elevation Models
Geospatial data DEM Photogrammetric sampling Cartographic digitisation Specification
2016/5/20
The National Bureau of Surveying & Mapping of China has planned to speed up its development of spatial data infrastructure (SDI) in the coming few years. This SDI consists of four types of digital pro...
Validating Global Digital Elevation Models with Degree Confluence Project Information and ASTER-DEM on Geo Grid
DEM Validation GTOPO30 SRTM ASTER Data Integration
2015/12/18
There are two major freely available global digital elevation datasets, known as GTOPO30 and SRTM. To know the accuracies of those data in global scale, relative evaluation of these data and validatio...
Semi-Supervised Incremental Learning of Hierarchical Appearance Models
Detection Building Structure, Interpretation Classifi cation Incremental Learning Recognition
2015/12/8
We propose an incremental learning scheme for learning a class hierarchy for objects typically occurring multiple in images. Given oneexample of an object that appears several times in the image, e.g....
Automated Updating of Building Data Bases from Digital Surface Models and Multi-Spectral Images: Potential and Limitations
Change Detection Digital Surface Models Data Fusion
2015/12/4
A method for automatic updating of building data bases from Digital Surface Models (DSM) and a normalised difference vegetation index is evaluated. The DSM can be generated from Airborne Laserscanner ...
AUTOMATIC MATCHING OF TERRESTRIAL SCAN DATA AS A BASIS FOR THE GENERATION OF DETAILED 3D CITY MODELS
LIDAR Laser scanning Fusion Matching
2015/6/1
The request for three-dimensional digital city models is increasing and also the need to have more precise and realistic
models. In the past, 3D models have been relatively simple. The models were de...
CREATING PRODUCT MODELS FROM POINT CLOUD OF CIVIL STRUCTURES BASED ON GEOMETRIC SIMILARITY
Point Cloud CIM Geometric Similarity Surface Reconstruction
2015/5/21
The existing civil structures must be maintained in order to ensure their expected lifelong serviceability. Careful rehabilitation and maintenance planning plays a significant role in that effort. Rec...
A framework for generalization of city models based on CityGML and X3D
CityGML X3D Generalization CityTree Visualization Aggregation
2016/4/12
In this paper, a novel framework for generalization of 3D city models based on CityGML and X3D is proposed. In the proposed framework, the CityGML files are first parsed into a Java environment to acq...
Geometric reasoning in 3D building models using multivariate polynomials and characteristic sets
geometric reasoning constraints theorem proving Wu’s method multivariate polynomials 3D building models
2016/4/11
In order to generate complex virtual cities, models of buildings have to be defined in advance. A common approach describes individual components of these buildings, which are in turn restricted by ge...