搜索结果: 1-14 共查到“工学 obstacle”相关记录14条 . 查询时间(0.158 秒)
CHALLENGES WITH OBSTACLE DATA FOR MANNED AND UNMANNED AVIATION
Obstacle data UTM U-Space Aircraft Drones Personal air vehicles
2018/11/9
The objective of this paper is to raise awareness about the significance of collecting and ensuring the quality of the obstacle data required for the safety of air navigation for both manned and unman...
INDOOR NAVIGATION FROM POINT CLOUDS: 3D MODELLING AND OBSTACLE DETECTION
indoor modelling laser scanner automation path planning obstacles real navigation
2016/11/8
In the recent years, indoor modelling and navigation has become a research of interest because many stakeholders require navigation assistance in various application scenarios. The navigational assist...
APPLICATION OF DSM IN OBSTACLE CLEARANCE SURVEYING OF AERODROME
Obstacle Clearance Surveying Obstacle Limitation Surface Digital Surface Model
2016/7/8
Compared to the wide use of digital elevation model (DEM), digital surface model (DSM) receives less attention because that it is composed by not only terrain surface, but also vegetations and man-mad...
Temporal Coupled-Mode Theory for Fano Resonance in Light Scattering by a Single Obstacle
Temporal Coupled-Mode Theory Fano Resonance Light Scattering Single Obstacle
2015/8/10
We present a theory for Fano interference in light scattering by individual obstacle, based on a temporal coupled-mode formalism. This theory is applicable for obstacles that are much smaller than the...
根据柑橘采摘机器人遇到树枝等障碍物的特点，通过提取和处理障碍物图像的骨架恢复障碍物的三维信息。首先采用图像分割、形态学处理、区域细线化等步骤提取障碍物骨架，并进行骨架修剪、恢复遮挡骨架等处理；然后找出骨架中端点、分支点等特征点并记录其连接关系；最后通过对特征点的立体匹配恢复障碍物的三维信息，试验表明障碍物的正确识别率为67.3%。
农用车辆作业环境障碍物检测方法（Obstacle Detection in the Working Area of Agricultural Vehicle Based on Machine Vision）
农用车辆 颜色分割 特征匹配
2009/11/3
针对联合收获机视觉导航系统中的视觉测障，提出了一种基于单目彩色图像分割测障与立体视觉特征匹配测障相结合的测障方法：利用H、S颜色分量对单目图像实施固定阈值分割并二值化，获得潜在障碍物的位置及区域；采用尺度空间不变(SIFT)算法获取潜在障碍物区域特征；采用近似最近邻分类算法(ANN)进行快速特征匹配，获得潜在障碍物的世界坐标，由此进一步确认障碍物以及障碍物与车辆之间的距离。提出了提高算法效率的措施...
Robust Tracking Control of Mobile Robot Formation with Obstacle Avoidance
Robust Tracking Control Mobile Robot Formation Obstacle Avoidance
2009/9/7
We consider the formation control problem of multiple wheeled mobile robots with parametric uncertainties and actuator saturations in the environment with obstacles. First, a nonconvex optimization pr...
CFD Simulation of Polydispersed Bubbly Two-Phase Flow around an Obstacle
CFD Polydispersed Bubbly
2009/9/3
This paper concerns the model of a polydispersed bubble population in the frame of an ensemble averaged two-phase flow formulation. The ability of the moment density approach to represent bubble popul...
V-disparity Based UGV Obstacle Detection in Rough Outdoor Terrain
MGD V-disparity image obstacle detection UGV outdoor unstructured environment
2010/3/29
This paper presents a fast obstacle detection (OD) system
based on stereo vision for Unmanned Ground Vehicle (UGV) navigation
in unstructured environment. In order to make the UGV adaptable to
more...
Obstacle Avoidance and Travel Path Determination in Facility Location Planning
New Facility Location Obstacle Avoidance Quadrilateral Barrier Configuration
2010/1/15
This research finds a solution methodology for determining optimal travel path to and from existing facilities and corresponding location of a new facility having physical flow interaction between the...
Mixed convection effect due to presence of shear flow and heated blunt obstacle
Shear flow Buoyancy force Flow separation
2010/9/27
The flow and heat transfer due to an incompressible fluid past a single low-lying roughness mounted on a long smooth surface is consider. The far-field motion is one of uniform shear. The influence of...
A numerical study on the free-surface channel flow over a bottom obstacle
open channel flow undular hydraulic jump
2010/3/11
This paper presents the results of a numerical study on a two-dimensional freesurface channel flow over a bottom obstacle. Of main interest is the capability of commercial CFD codes to solve such prob...
MUMBAI, India, Feb. 12 — A day after Vodafone, the British telecommunications company, agreed to pay $11.1 billion to acquire control of Hutchison Essar, a fast-growing Indian cellphone operator, anal...
Investigation of the interaction of an automobile wheel with a vertical obstacle
interaction wheel automobile vertical obstacle tire dismantling equivalent speed
2010/11/2
Collision of automobile wheels with a vertical obstacle as a result of which the wheel tire gets dismantled is considered in the present article. The required force and the minimal speed of driving wh...