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三维激光扫描技术是一种先进的全自动高精度立体扫描测绘技术,可以连续、自动、快速获取大量目标地物表面的三维点云数据,具有获取数据量大、精度高、不接触、全天候工作等优势。利用三维激光扫描技术对不可移动文物本体测绘图制作方法进行研究,以期为文物保护工作提供可行的技术路线。 相似文献
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采用三维激光扫描技术获取空间信息数据,以解决古建筑文物保护方面设计图纸丢失、修缮困难、采用传统测绘技术进行相关档案资料制作精度和工作效率不能满足实际需求的问题。在点云数据缺失条件下,基于点云数据建筑物特征面自动提取建模技术等关键技术进行点云数据处理,三维建模,高效高精度地完成古建筑档案资料的生成和整理,以达到保护对古建筑文物的目的。 相似文献
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三维激光扫描直接对地球表面进行三维密集采样,可快速获取具有三维坐标(X,Y,Z)和一定属性(反射强度等)的海量、不规则空间分布三维点云,成为数字化时代下刻画复杂现实世界最为直接和重要的三维地理空间数据获取手段,在全球变化、智慧城市、全球制图等国家重大需求和地球系统科学研究中起到十分重要的作用。目前,在传感器技术和国家需求的双重驱动下,三维激光扫描在硬件装备、三维点云数据处理以及应用3个方面取得了巨大的进步,同时也面临新的挑战。本文以三维激光扫描的发展历史为线索,总结了三维激光扫描系统的现状、三维点云数据处理的关键进展以及在测绘地理信息等领域的典型应用,并分析了三维点云数据处理面临的挑战,最后展望了三维激光扫描与点云处理的发展趋势。 相似文献
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伴随着科学技术的不断发展和进步,三维激光扫描技术广泛地应用在越来越多的领域。本文以331国道扩建项目为例,研究探讨利用三维激光扫描技术获取点云数据,并在三维点云数据建模的基础上,利用易绘软件制作地形图,旨在为三维激光扫描技术在更多的领域内应用提供参考。 相似文献
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地铁主体施工完毕后为了对线路进行调线调坡,需要对地铁隧道进行断面测量,三维激光扫描与常规测量方法相比具有非接触式测量,可高密度采集空间三维点云数据等特点,为地铁断面测量提供了新的途径。本文基于Leica Scanstation 2扫描仪分析了三维激光扫描点云数据采集步骤和数据处理流程,阐述了基于点云数据的地铁断面测量方法,分析了三维激光扫描技术在隧道断面测量中应用的可行性。研究结果表明,这种高密度、高精度的隧道断面能够满足地铁调线调坡等方面的技术要求。 相似文献
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采用Landsat TM数据分析了阿克苏河—塔里木河断面水质污染状况,通过波段的DN值和常规监测数据建立能反映水质状况的
污染物监测模型。结果发现,将2000年常规监测数据代入模型后,与遥感数据的结果基本吻合| 重建阿克苏河—塔里木河的连续水体
污染变化曲线,得出污染物浓度随着远离上游而增加。 相似文献
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ZHAN F. Benjamin 《地球空间信息科学学报》2011,(1)
Although it is well known that coseismic gravity changes take place during an earthquake, previous research has not yielded convincing evidence demonstrating that significant gravity changes occur before large earthquakes. Furthermore, even if we suspect that gravity changes occur before large earthquakes, we have yet to demonstrate how to consistently observe these changes for useful earthquake forecast that would bring benefits to society. We analyzed ground gravity survey data obtained in 1998, 2000, 200... 相似文献
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Piyoosh Rautela Ramesh Chandra Lakhera 《International Journal of Applied Earth Observation and Geoinformation》2000,2(3-4)
The area around Sataun in the Sirmur district of Himachal Pradesh, India (falling between the rivers Giri and Tons; both tributaries of the Yamuna River) was studied for landslide vulnerability on behalf of the inhabitants. The study was made using extensive remote sensing data (satellite and airborne). It is well supported by field evidence, demographic and infrastructural details and aided by Geographic Information System (GIS) based techniques. Field observations testify that slope, aspect, geology, tectonic planes, drainage, and land use all influence landslides in the region. These parameters were taken into consideration using the statistical approach of landslide hazard zonation. Using the census data of 1991, vulnerability of the populace to the landslide hazard was accessed. As most of the infrastructure in the region is concentrated around population centres, population data alone was used for vulnerability studies. 相似文献
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GNSS系统及其技术的发展研究 总被引:3,自引:1,他引:2
阐述了国际上卫星导航系统的总体发展,对美、俄、欧、中的四大全球系统,以及相关的区域系统和增强系统进行了简单的介绍,研究分析了GNSS系统及其技术的发展趋势,同时分析了我国Compass全球系统面临的机遇和挑战,并提出了我国未来工作的建议. 相似文献
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“4D”技术及其应用 总被引:13,自引:0,他引:13
介绍“4D”(即数字地面模型、数字正射影像、数字栅格地图和数字线划地图)系列产品的生产流程、关键技术、及其在耕地保护、防灾减灾救灾和城市规划等方面的应用方法。 相似文献
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《International Journal of Digital Earth》2013,6(1):66-87
Abstract Virtual Australia is not a well-defined or agreed concept. This discussion paper conceptualises Virtual Australia as a ‘virtual [digital] model containing and representing all non-trivial objects and their contextual environment – from blue sky to bedrock – in real world Australia’. It describes a scenario for Virtual Australia, one or two decades from now, in which the locations and conditions of non-trivial objects and their environment are updated automatically through a combination of remote sensing and wireless communication technologies in support of a ‘Supranet’. It then examines the concept of the ‘Supranet’ – a pervasive information network based largely on wireless technology linking the physical world to a virtual model in real time – and develops and discusses three principal characteristics of the Supranet: the ability to have or collect specific information (know); the ability to process information (think); and the ability to communicate that information. If, in the near future, any or all non-trivial devices are to some extent able to know, think and communicate, the potential for object autonomy will be realised. 相似文献
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Toward seamless indoor-outdoor applications: Developing stakeholder-oriented location-based services
Kohei OGAWA Edward VERBREE Sisi ZLATANOVA Naohiko KOHTAKE Yoshiaki OHKAMI 《地球空间信息科学学报》2011,14(2):109-118
Location-Based Services (LBS),an emerging new business based on smartphone and mobile networks,are becoming more and more popular.Most of these LBSs,however,only offer non-seamless indoor/outdoor applications and simple applications without giving stakeholders the chance to play an active role.Our specific aim is to solve these issues.This paper presents concepts to solve these issues by expanding the Open Location Services Interface Standard (OpenLS) to allow seamless indoor/outdoor positioning and to extend the content of the services to include information recommended by stakeholders. 相似文献