搜索结果: 16-30 共查到“光学工程 LIDAR”相关记录37条 . 查询时间(0.106 秒)
performance analysis of altm3100ea system:instrument specifications and accuracy of lidar data
LiDAR laser scanning DEM/DTM accuracy performance
2015/9/1
Over the last decade the number of airborne lidar systems currently deployed and operating in the field has grown impressively.This growth has intensified the level of competition among lidar equipmen...
matching topographic surfaces by retrieving and modeling 3d discrepancies. application to lidar data and photogrammetric surfaces
Lidar 3D registration robust estimation matching data fusion DSM
2015/9/1
If photogrammetry has been used for a long time to describe the topography, airborne laser systems are nowadays well-known to provide an accurate representation of terrestrial landscapes through irreg...
extreme precision lidar mapping
LiDAR Airborne Laser Scanning Georeferencing QA/QC Accuracy
2015/9/1
To advance earthquake research, a unique LiDAR (Light Detection and Ranging) survey was conducted to map an approximately 1,000 km segment of the San Andreas Fault in southern California in the spring...
a review of the asprs guidelines for the reporting of horizontal and vertical accuracy in lidar data
Lidar Airborne Laser Scanning CAL/VAL Specification Standards Accuracy
2015/9/1
The American Society for Photogrammetry and Remote Sensing (ASPRS) Lidar Committee (ASPRS LC) has developed guidelines titled “ASPRS Lidar Guidelines – Vertical Accuracy Reporting for Lidar Data V1.0 ...
融合LIDAR的激光同步扫描三角测量系统的设计
光学设计 LIDAR系统 三角测量 同步扫描
2014/12/10
为了实现对远近距离的物体进行三维测量,扩大系统的测量范围,建立了融合LIDAR的激光同步扫描三角测量系统。对该系统的原理、系统设计及器件选型进行研究。首先,根据同步扫描机制,在普通三角测量的基础上融合LIDAR技术,并推导出三维点的计算公式。接着,根据系统设计要求,介绍了激光器、接收透镜、反射镜、二向色镜、扫描伺服电机、LIDAR接收器以及相机的选型等。然后,根据选型的结果,设计机械结构。最后,通...
Automated Extraction of 3D Trees from Mobile LiDAR Point Clouds
Mobile LiDAR Tree Extraction Shape Context Segmentation Point Cloud
2014/6/30
This paper presents an automated algorithm for extracting 3D trees directly from 3D mobile light detection and ranging (LiDAR) data. To reduce both computational and spatial complexities, ground point...
Evaluations of Three-Dimensional Building Model Reconstruction from LiDAR Point Clouds and Single-View Perspective Imagery
3D Building Model Reconstruction LiDAR Single View Reconstruction Image-based Reconstruction Close-range Photogrammetry
2014/6/30
This paper briefly presents two approaches for effective three-dimensional (3D) building model reconstruction from terrestrial laser scanning (TLS) data and single perspective view imagery and assesse...
Processing lidar waveform data for 3D visual assessment of forest environments
Forestry Full Waveform Lidar 3D modelling Visual representation
2014/6/30
The objective of this report is to present and discuss a work-flow for extracting, from full-waveform (FW) lidar data, formats which are compatible with common information systems (GIS) and statistica...
针对形态学运算在机载LiDAR 滤波中最大窗口尺寸的选择问题,提出了一种基于形态学开重建的迭代多尺度点云滤波算法。通过循环迭代多尺度开重建运算,克服开重建对矮小地物的误判问题,自动获取开重建运算的最大窗口尺寸,解决了对城市区域滤波的窗口适宜尺寸选择问题,提高了地物与地面点分类的正确性。使用ISPRS 提供的城区样本测试数据开展实验,结果表明:其Ⅰ类、Ⅱ类及总误差均值分别达到3.10%、6.05%和...
Method to Monitor Atmospheric Atomic Mercury by a Differential Absorption Lidar System
Monitor Atmospheric Atomic Mercury Differential Absorption Lidar System
2013/12/2
A differential absorption lidar (DIAL) system has been developed for atomic mercury concentration monitoring and applied in ambient air monitoring in Guangzhou, China. A 24-hour measurement on backgro...
机载LIDAR 点云定位误差分析
机载LIDAR 点云 定位误差 系统误差
2013/10/10
在机载LIDAR 点云定位方程的基础上建立其定位误差方程，依据定位误差方程，将点云的误差分类为系统误差、任务误差和随机误差3类。详细分析了平地、下坡面、上坡面3种情形下地形坡度和扫描角对测距误差和点云定位误差的影响大小，探讨了扫描角误差、安置角误差、姿态角误差以及扫描角对点云定位误差的影响。除了分析系统误差外，还着重分析了时间偏差、GPS定位误差、偏心分量误差以及随机误差对点云定位误差的影响大小。...
Differential absorption lidar system employed for background atomic mercury vertical profi ling in South China
Differential absorption lidar DIAL Atomic mercury Oxygen Pollutant
2013/7/8
A differential absorption lidar (DIAL) system based on a Nd:YAG laser pumped narrow-band dye laser is developed and employed to monitor the atmospheric background concentration of atomic mercury in Gu...
基于平面延展方法的LiDAR数据滤波
LiDAR 平面延展法 DEM 预处理
2012/10/11
在对目前机载LiDAR 数据后处理典型算法分析比较的基础上，针对机载LiDAR 技术实际应用中对数据处理稳定性、智能性与适应性的更高需求，提出了一种快速稳健滤波方法，即平面延展方法。它利用单元平面的生长形成整个地表，相对常规方法增加了栅格化数据、填充空白数据及剔除错误冗余数据等操作，利用可靠的判定条件选择了基础点。采用平面延展方法对不同地形区域的LiDAR 数据进行了滤波，将滤波前后的数据图像进行...
THE EFFECTS OF LASER REFLECTION ANGLE ON RADIOMETRIC CORRECTION OF THE AIRBORNE LIDAR INTENSITY DATA
Radiometric Correction LiDAR Intensity Data Reflection Angle Surface Normal Land Cover Classification
2012/9/3
Radiometric correction (RC) of the airborne Light Detection And Ranging (LiDAR) intensity data has been studied in the last few years. The physical model of the RC relies on the use of the laser range...
SIMPLIFIED 3D CITY MODELS FROM LIDAR
LiDAR Point Cloud TIN Data Reduction Segmentation Reconstruction 3D City Model
2012/7/25
Aerial laser scan data is widely used to produce 2 1/2D digital elevation models automatically. However, creating full 3D city models from this data is a complex task. A simplified 3D model, like a 2 ...