搜索结果: 1-13 共查到“工学 heights”相关记录13条 . 查询时间(0.125 秒)
Perovskites hold promise for creating solar panels that could be easily deposited onto most surfaces, including flexible and textured ones. These materials would also be lightweight, cheap to produce,...
CAMERA CALIBRATION ACCURACY AT DIFFERENT UAV FLYING HEIGHTS
Camera calibration accuracy assessment object distances UAV flying heights
2017/4/6
Unmanned Aerial Vehicles (UAVs) can be used to acquire highly accurate data in deformation survey, whereby low-cost digital cameras are commonly used in the UAV mapping. Thus, camera calibration is co...
IMPACT OF BUILDING HEIGHTS ON 3D URBAN DENSITY ESTIMATION FROM SPACEBORNE STEREO IMAGERY
Urban Density Building Density 3D Density Building Height Floor Area Ratio Stereo Imagery Impact
2016/7/28
In urban planning and design applications, visualization of built up areas in three dimensions (3D) is critical for understanding building density, but the accurate building heights required for 3D de...
Investigation into the automatic generation of heights of different Danish landscape types
automatic generation heights different Danish landscape types
2016/5/23
This article describes an investigation using automatic generation of heights over a typical Danish landscape. For this investigation the program Match-T has been used. The investigation is carried ou...
ASSESSMENT OF LIDAR-DERIVED TREE HEIGHTS ESTIMATED FROM DIFFERENT FLIGHT ALTITUDE DATA IN MOUNTAINOUS FORESTS WITH POOR LASER PENETRATION RATES
Forestry Remote Sensing LIDAR Laser scanning DEM/DTM
2015/11/10
In this study, the effects of different flight altitudes on tree height estimates with a small-footprint scanning lidar were investigated and assessed in mountainous forests with poor laser penetratio...
CALIBRATION OF STATIONARY CAMERAS BY OBSERVING OBJECTS OF EQUAL HEIGHTS ON A GROUND PLANE
Camera Calibration Estimation
2015/6/1
The image coordinates of the
corresponding foot and head points of these objects serve as observations. For the interior and exterior orientation of the
camera a minimal parametrization is introduce...
ESTIMATING INDIVIDUAL TREE HEIGHTS OF THE BOREAL FOREST USING AIRBORNE LASER ALTIMETRY AND DIGITAL VIDEOGRAPHY
Laser altimetry Tree Height Boreal Forest Videography
2014/12/22
Estimation of tree heights for large territories is either expensive if done in the field or imprecise when accomplished through automated stereophotogrammetry. While scanning laser altimetry provides...
$18-million NSF investment aims to take flat materials to new heights
take flat materials new heights
2014/10/9
Graphene, a form of carbon in which a single layer of atoms forms a two-dimensional, honeycomb crystal lattice, conducts electricity and heat efficiently and interacts with light in unusual ways. Thes...
IMPLEMENTATION OF THE DISTRIBUTED PARALLEL PROGRAM FOR GEOID HEIGHTS COMPUTATION USING MPI AND OPENMP
Distributed parallel computing Geoid heights computation MPI OpenMP Diskless-based PC Cluster
2014/4/28
Much research have been carried out using optimization algorithms for developing high-performance program, under the parallel computing environment with the evolution of the computer hardware technolo...
覆膜开孔蒸发条件下土体高度对水盐运移的影响（Effects of Soil Column Heights on Movement of Soil Water and Soil Salt-during Evaporation under Perforated Plastic Mulch）
覆膜开孔率 土体高度 单位深度累积蒸发量
2010/12/29
通过不同高度土体在不同覆膜开孔率条件下的室内蒸发试验，研究了土体高度变化时水盐分布的差异与相互联系。试验结果表明，不同高度土体的单位深度累积蒸发量与时间变化符合Gardner理论关系，单位深度累积蒸发量与时间和土体总高度存在二元线性函数关系；单位深度累积蒸发量和单位膜孔面积单位深度累积蒸发量均与土体高度和覆膜开孔率存在较好的函数关系；土体高度越小，单位深度含盐量和盐分浓度变化幅度越大，土体高度是影...
Prediction of the Fountain Heights in Fine Particle Spouted Bed Systems
Spouting Fluidization Fountain Heights
2009/10/15
New empirical correlations are proposed to predict the fountain heights in spouted bed systems operating with fine particles.These correlations can be used for predicting the total spouted bed vessel ...
Comparison of Wood Properties of Hinoki（Chamaecyparis obtusa）Small Diameter Logs Collected from Different Tree Ages and Heights
hinoki basic density pilodyn penetration compression strength
2009/3/6
To effectively utilize small diameter logs as a civil engineering material, the wood properties of such logs of hinoki (Chamaecyparis obtusa Endl.) were investigated by determining density of air-dri...
POTENTIAL OF ERS-1 DERIVED ORTHOMETRIC HEIGHTS TO GENERATE GROUND CONTROL POINTS FOR ABSOLUTE ORIENTATION OF IMAGERY AND DEM QUALITY EVALUATION
Geodesy Photogrammetry Orientation
2015/6/1
Though the ERS satellites are today out of service, the huge quantity of altimetric data collected during the so-called “geodetic
missions” covers the globe with sufficient density for many mapping ...