搜索结果: 1-15 共查到“测绘科学技术 3-d Surface Models”相关记录39条 . 查询时间(0.15 秒)
UTILIZATION OF LARGE SCALE SURFACE MODELS FOR DETAILED VISIBILITY ANALYSES
analysis of visibility unmanned air vehicle 3d point cloud extended viewshed viewshed
2018/3/5
This article demonstrates utilization of large scale surface models with small spatial resolution and high accuracy, acquired from Unmanned Aerial Vehicle scanning, for visibility analyses. The import...
BUILDING DETECTION USING AERIAL IMAGES AND DIGITAL SURFACE MODELS
Building detection variational inference logistic regression Bag-of-Words (BoW) conditional random fields aerial images classification
2017/7/12
In this paper a method for building detection in aerial images based on variational inference of logistic regression is proposed. It consists of three steps. In order to characterize the appearances o...
EXPLOITATION OF DIGITAL SURFACE MODELS GENERATED FROM WORLDVIEW-2 DATA FOR SAR SIMULATION TECHNIQUES
Synthetic Aperture Radar Digital Surface Models Simulation Urban areas
2017/7/12
GeoRaySAR, an automated SAR simulator developed at DLR, identifies buildings in high resolution SAR data by utilizing geometric knowledge extracted from digital surface models (DSMs). Hitherto, the si...
COMPARISON OF DIGITAL SURFACE MODELS FOR SNOW DEPTH MAPPING WITH UAV AND AERIAL CAMERAS
snow height dense point cloud digital surface model aerial camera
2016/11/30
Photogrammetric workflows for aerial images have improved over the last years in a typically black-box fashion. Most parameters for building dense point cloud are either excessive or not explained and...
MERGING DIGITAL SURFACE MODELS IMPLEMENTING BAYESIAN APPROACHES
Bayesian approaches Likelihood local entropy Merging DSMs WorldView-1 Pleiades
2016/11/24
In this research different DSMs from different sources have been merged. The merging is based on a probabilistic model using a Bayesian Approach. The implemented data have been sourced from very high ...
POTENTIAL OF MULTITEMPORAL TANDEM-X DERIVED CROP SURFACE MODELS FOR MAIZE GROWTH MONITORING
SAR Interferometry Agriculture Maize Monitoring TanDEM-X SAR Crop Heights Radar Remote Sensing
2016/11/24
In this study, first results of retrieving plant heights of maize fields from multitemporal TanDEM-X images are shown. Three TanDEM-X dual polarization spotlight acquisitions were taken over a rural a...
MULTI-TEMPORAL CROP SURFACE MODELS COMBINED WITH THE RGB VEGETATION INDEX FROM UAV-BASED IMAGES FOR FORAGE MONITORING IN GRASSLAND
Precision Agriculture Grassland UAV Crop Surface Model Structure from Motion RGBVI
2016/7/5
Remote sensing of crop biomass is important in regard to precision agriculture, which aims to improve nutrient use efficiency and to develop better stress and disease management. In this study, multi-...
Multi-image matching in object space on the basis of a general 3-D surface model instead of common 2.5-D surface models and its application for urban scenes
Surface Reconstruction Matching 3-d Surface Models Object Space
2016/5/23
A new method for high resolution surface reconstruction by multi-image matching in object space is formulated with regard to the integration of a general 3-d surface model in object space, because com...
DGPF Project: Evaluation of Digital Photogrammetric Aerial Based Imaging Systems – Generation of Digital Surface Models
DGPF camera evaluation project high resolution digital sensors aerial imaging systems DSM generation
2016/1/25
The Chair of Photogrammetry and Remote Sensing, ETH Zurich is one of the contract partners of the project „Evaluierung digitaler
photogrammetrischer Luftbildkamerasysteme“ which was initiated ...
MAPPING AND UPDATING MAPS IN DENSE URBAN REGIONS USING HIGH RESOLUTION DIGITAL AIRBORNE IMAGERY,SURFACE MODELS AND OBJECT-BASED CLASSIFICATION
Classification HRSC-AX Ultracam Feature detection Multi-spectral remote sensing Airborne remote sensing
2015/12/31
Over the last couple of years more and more analogue airborne cameras were replaced by digital cameras. Digitally recorded image data show significant advantages to film based data. Digital aerial pho...
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 ...
LEAF AREA INDEX ESTIMATION IN VINEYARDS FROM UAV HYPERSPECTRAL DATA,2D IMAGE MOSAICS AND 3D CANOPY SURFACE MODELS
Precision agriculture biomass crop narrow band indices
2015/9/10
The indirect estimation of leaf area index (LAI) in large spatial scales is crucial for several environmental and agricultural applications. To this end, in this paper, we compare and evaluate LAI est...
3D TREETOP POSITIONING BY MULTIPLE IMAGE MATCHING OF AERIAL IMAGES IN A 3D SEARCH VOLUME BOUNDED BY LIDAR SURFACE MODELS
Forest Inventory Remote Sensing Single Tree Mapping Height Estimation Allometric Modelling
2015/8/31
This paper presents a method for semi-automatic 3D positioning of tree tops that can be used for obtaining tree maps of the photovisible trees and tree heights. Such spatio-temporal, detailed informat...
A ROBUST ALGORITHM FOR ESTIMATING DIGITAL TERRAIN MODELS FROM DIGITAL SURFACE MODELS IN DENSE URBAN AREAS
DSM DTM Elastic Grid Outliers Robust Statistics
2015/8/31
This paper describes an algorithm in order to derive DTMs (Digital Terrain Models) from correlation DSMs (Digital Surface Models) and above-ground (buildings and vegetation) masks in dense urban areas...
3D TREETOP POSITIONING BY MULTIPLE IMAGE MATCHING OF AERIAL IMAGES IN A 3D SEARCH VOLUME BOUNDED BY LIDAR SURFACE MODELS
Forest Inventory Remote Sensing Single Tree Mapping Height Estimation Allometric Modelling
2015/8/28
This paper presents a method for semi-automatic 3D positioning of tree tops that can be used for obtaining tree maps of the photovisible trees and tree heights. Such spatio-temporal, detailed informat...