A comparison between analytical aerial photogrammetry,laser scanning,total station and global positioning system surveys for generation of digital terrain model

The present paper compares between four data sources for creating digital terrain models (DTMs), based on analytical aerial photogrammetry, laser scanning, total station (TS) and global positioning system surveys. The case study presents the comparative results obtained using the methods listed above. After obtaining the ground coordinates of points using each method, DTMs were created using Surfer Software to establish comparison consistency. To check accuracy of each method used, a series of 100 independent points were collected at random positions over the case study area using the TS for horizontal position and a digital level for elevation. The comparison of the results of the methods was performed based on accuracy and efficiency aspects. The results have shown that TS and terrestrial laser scanners (TLSs) could represent precise, effective and rapid solutions to produce economical and accurate DTMs. Also, using TLSs allow more various possibilities of data representation.     

构建"数字湖北"的建议

讨论了如何构建“数字湖北”。针对湖北省情，建议以湖北的江湖水系作为切入点，有步骤、分阶段地建成数字湖北。并对建立数字湖北江湖水系，提出了实施相关地理数据采集的具体建议。     

基于普通数码相机的核线相关方法

用普通数码相机获取数字影像具有一定的优势，但由于普通数码相机是一种非量测相机，其数据处理需要特殊方法，介绍了一种适合普通数码相机进行核线相关的方法，实验数据表明该方法是可行的。     

基于数码相机的孔群定位与数控钻孔

提出基于数码相机摄像、螺孔影像中心定位、多站摄像、自检校光束法平差、螺孔群的一次定位以及数控钻孔的一整套新生产流程。强调在摄像测量中以像素为单位表示像方所有量(包括像点坐标、内方位元素和各类畸变)的可行性，而且此种措施简化了非方形像素间隔的检校。     

基于等值线图的乐山大佛三维可视化

在传统的近景摄影测量获得佛象二维等值线图的基础上，通过扫描数字化二维等值线图，利用GIS软件GeoStar实现乐山大佛的三维建模（DSM）、虚拟现实和三维仿真，最终实现了三维漫游。     

开拓进取再创辉煌--武汉大学遥感信息工程学院建设发展思考

回顾了武汉大学遥感信息工程学院近几年来在遥感科学与技术新专业设置、科研建设成果、教学改革、教材建设和人才培养等方面的情况，介绍了摄影测量与遥感重点学科今后三年的建设目标和发展方向。     

上海城市三维景观模型的制作

通过实践分析了城市三维建模技术的现状，并提出了在数字城市建设中城市三维建模的要点以及今后的研究方向。     

地图制图技术及发展方向

随着科技的发展 ,传统的地图制图科学发生了深刻的变化 ,形成了地图制图新技术革命的浪潮。这些变化涉及制图数据来源、制图生产过程、地图表现形式乃至地图功能诸多方面。文章根据作者实践谈谈认识和体会     

应用GPS建立航测区域控制网的设计与实践

介绍了应用GPS建立西安市1:500航测数字化成图的区域控制网的设计方案、外业施测、数据检核与数据处理的方法与经验.     

History of the Photogrammetric Society

The Photogrammetric Society was formed in 1952. The Council of the Society considered that the twentieth anniversary was a good point at which to record the events which led to its formation and the significant occasions and decisions which have taken place since 1952. Consequently, Paul Lamboit was invited to compile this History. He has placed the birth and development of the society within the national and international photogrammetric context and his record of the deliberations which took place between 1947 and 1952 will be of particular interest to historians of our subject.
This account was first published in a limited edition in 1971. Sufficient interest has since been expressed to prompt a wider circulation through publication in the Photogrammetric Record .
The author served the Society continuously in several official capacities from 1953 to 1969 and he was elected to Honorary Membership in 1969.