LIDAR点云滤波算法分析——以ISPRS测试实验为参考

在分析ISPRS测试实验的基础上,研究机载LIDAR点云数据滤波算法的特性,将算法分成4类进行介绍,总结经典算法的定量分析性能,为后续的研究提供一个参考,并展望滤波算法改进和发展的方向.     

完全残差连接与多尺度特征融合遥感图像分割

遥感图像数据规模大，光照、遮挡等情况复杂，目标密集、尺度不一以及缺乏大量带标注图像用于训练深度网络等特点对遥感图像分割的完整性和正确性造成了更大的挑战。针对深度卷积网络中因多次卷积造成分辨率显著下降，像素类别预测精度降低的问题，本文在深度卷积编码—解码网络的基础上设计了一个采用完全残差连接和多尺度特征融合的端到端遥感图像分割模型。该模型具有两方面优点：首先，长距离和短距离的完全残差连接既简化了深层网络的训练，又为本层末端融入了原始输入信息，增强了特征融合。其次，不同尺度和方式的特征融合使网络能够提取丰富的上下文信息，应对目标尺度变化，提升分割性能。本文通过对ISPRS Vaihingen和Road Detection数据集做数据扩充并进行实验，分别从平均IOU、平均F1值两方面对模型进行评价。通过与目前先进的模型以及文献中的研究成果进行比较，结果表明本文所提模型优于对比模型，在两个数据集上的平均IOU分别达到了85%和84%，平均F1值分别达到了92%和93%，能够有效提高遥感图像目标分割的完整性和正确性。     

Xxth International Congress of Photogrammetry and Remote Sensing

The XXth International Congress of Photogrammetry and Remote Sensing was held at the Istanbul Convention and Exhibition Centre (ICEC), Turkey, from 12th to 23rd July 2004. Reports are given on the Congress as a whole, including the General Assembly, some Technical Commission activities and the Congress Exhibition. Papers from the Congress are published in Volume XXXV of the International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences.     

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.     

虚拟现实与计算机动画

虚拟现实与计算机动画方面的研究内容在较长的时期内是一个热点主题，ISPRS将其列为一个专题，对支持摄影测量与遥感的成果展示有积极的促进作用。本文通过归纳和总结2008年ISPRS大会的该专题论文，简要地给出这些论文的主旨，以企为读者提供举纲张目的帮助。这些论文的研究内容集中在3维可视化相关技术方面，包括3维数据获取建模与处理、3维模型数据精简、纹理数据提取、DEM可视化以及巷道可视化方法等。     

虚拟现实与计算机动画

虚拟现实与计算机动画方面的研究内容在较长的时期内是一个热点主题,ISPRS将其列为一个专题,对支持摄影测量与遥感的成果展示有积极的促进作用.本文通过归纳和总结2008年ISPRS大会的该专题论文,简要地给出这些论文的主旨,以企为读者提供举纲张目的帮助.这些论文的研究内容集中在3维可视化相关技术方面,包括3维数据获取建模与处理、3维模型数据精简、纹理数据提取、DEM可视化以及巷道可视化方法等.     

XXIst International Congress of Photogrammetry and Remote Sensing

The XXIst International Congress of Photogrammetry and Remote Sensing was held at the Beijing International Convention Centre, China, from 3rd to 11th July 2008. Reports are given on the Congress as a whole, including the General Assembly, some Technical Commission activities and the Congress Exhibition. Papers from the Congress are published in Volume XXXVII of the International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences.     

Xixth International Congress of Photogrammetry and Remote Sensing

The XIXth International Congress of Photogrammetry and Remote Sensing was held at the Amsterdam RAI International Exhibition and Congress Centre, the Netherlands, from 16th to 23rd July 2000. Reports are given on the Congress as a whole, including the General Assembly, some Technical Commission activities and the Congress Exhibition. Papers from the Congress are published in the International Archives of Photogrammetry and Remote Sensing, 33.     

摄影测量与遥感的国际研究动向--国际摄影测量与遥感学会(ISPRS)的结构与主题

首先简述国际摄影测量与遥感学会(ISPRS)的概况，在此基础上讨论了ISPRS各个技术委员会的鼓励研究方向，以及2000—2004年期间的主要学术活动安排。最后分析介绍了中国学术及有关单位参与ISPRS活动的情况。     

The Photogrammetric Society: 1952–2001

A scholarly account of the formative discussions, the founding and the first 20 years of the Photogrammetric Society was published in 1971 and republished in 1974. This present review concentrates on the latter years of the life of the Photogrammetric Society prior to its merger with the Remote Sensing Society in 2001.
The authors joined the Photogrammetric Society in 1960 and were conspicuous in its affairs for many years. Although both occupied the Society's presidential chair, they also fulfilled several other roles in its efficient management. Atkinson's first contribution to the Photogrammetric Record was published in 1968 and Newton's in 1971.