A METHOD OF AUTOMATING THE PRESENTATION OF INFORMATION DURING COMPLEX AIR PHOTO INTERPRETATION

A method of complex image processing, i.e., the simultaneous use of various kinds of remote sensing imagery in the mapping and study of geographic features, is outlined. It features the use of computerized techniques (a) to identify shots or frames of auxiliary types of imagery containing the same specific geographic features identified on the principal type of imagery [this through the scanning of code lines containing information about the coordinates of imaging, flight direction and altitude of the plane or sensing platform, etc.], and (b) to precisely locate the features of interest within these shots or frames. Translated from: Izvestiya vysshykh uchebnykh zavededeniy, Geodeziya i aerofotos'yemka, 1986, No. 1, pp. 86–91.     

AIR SURVEY AND THE PHOTOGRAPH

Abstract

As air-photographs are being more and more used for survey purposes, Empire surveyors who have not yet made a thorough study of aerial survey may be interested in a little elementary photographic geometry and its application to map-making. A map may be described as an orthogonal proj ection of the ground upon a horizontal plane, reduced to some convenient scale, and a photograph as a conical projection of the ground upon the focal plane of the camera. If the focal plane is horizontal at the instant of exposure and the ground being photographed is perfectly level, the two projections are exactly similar and the photograph is indeed a map. Unfortunately these conditions which are illustrated in fig. 1 are extremely rarely encountered, and photographs usually need correcting for various distortions.     

STANDARDIZING EQUIPMENT OF THE GOLD COAST SURVEY DEPARTMENT

Abstract

The following account of the standardizing equipment of the Gold Coast Survey Department has been written, at the request of the Editor of the Review, because this equipment includes a completely enclosed standard of length 300 feet long which is believed to be one of the very few enclosed standards of this length in any of the Crown Colonies.     

THE USE OF AIR PlIOTOGRApHS BY THE ORDNANCE SURVEY

Abstract

During the last year, the Air Survey Section, Field Division, Ordnance Survey, have had many visitors. Most of them have been surprised at what they have seen: some at the fact that we are able to make so much use of air photographs even in the largest scale surveys, and some at the small amount of information we seem able to extract from them. This paper is an attempt to give in some detail the ways in which air photographs are used to solve the problems of the Ordnance Survey, why they are used and their limitations for our purposes.     

AIR SURVEY: THE ADJUSTMENT OF STRIP PLOTS

Abstract

An outstanding problem in topographical air surveying which faces the practical air surveyor almost daily is that of adjusting the plot along the lateral overlap between two strips.     

城市地面沉降与地下水动态监测信息管理系统的建立与研究

地面沉降与地下水资源是深受关注的城市环境问题。借助计算机技术、GIS技术及虚拟现实技术对大量的多元的地面沉降与地下水动态监测数据进行科学化的管理、模拟预测和可视化分析是非常重要的。本文论述了建立城市地面沉降与地下水动态监测信息分析系统的基本框架、主要功能和特点。     

THE INTERPRETATION AND MAPPING OF VEGETATION AND OTHER GROUND SURFACE FEATURES FROM AIR PHOTOGRAPHS OF MOUNTAINOUS AREAS IN NORTH WALES

The paper describes work undertaken in North Wales in 1967 and 1968 in which panchromatic and colour air photographs were used in the mapping of vegetation and in the study of other ground surface features. The problems of relating a priori classification schemes to the categories distinguished by air photo-interpretation are discussed and the case stated for developing classifications which enable more benefit to be derived from the advantages of air photo-ecology.     

土地勘测定界系统的设计与应用

介绍了土地勘测定界系统的功能设计,阐述了成果制作过程,实现了与建设用地报批、土地变更、土地市场交易等的无缝衔接。     

地球空间信息技术在新一轮国土资源大调查中的应用探讨

从分析全球变化和社会可持续发展研究的要求出发,提出地球空间信息技术的形成背景和应用基础。针对新一轮国土资源大调查的性质和任务,探讨了地球空间信息技术在新一轮国土资源大调查中的应用。     

AIR SURVEY COMES OF AGE IN THE ORDNANCE SURVEY OF IRELAND: 1965–1986

Since the mid-1960s, the Ordnance Survey of Ireland, whose headquarters are in Dublin, has undergone great technological change. This paper emphasises the photogrammetric aspects of that change and outlines how a sophisticated range of modern equipment is used in the supply of survey data for the Irish Republic.     

建筑工程施工平面控制测量精度的确定和实现

本文论述了建筑工程施工控制测量的特点,并根据工程施工要求,运用平差理论,分析并确定测量中误差,最后探讨了经纬仪标称精度和测量技术标准。本文的论述可以使建筑工程测量更趋于合理,易于实现。     

西藏墨脱公路断裂构造遥感分析及信息提取

在西藏墨脱公路断裂构造的遥感勘察中，以Landsat-7 ETM+卫星影像为信息源，以ENVI 4.0软件为图像处理平台，运用数据集成、图像融合、主成分分析及方向滤波等图像处理技术对断裂构造信息进行增强处理； 以基于地学知识的遥感构造分析技术对南迦巴瓦峰地区的断裂构造特征进行全面解译和识别，并在ArcGIS 8.2的支持下进行断裂构造专题制图及信息提取，查明了公路方案线区域内断裂构造的分布及发育特征，为墨脱公路工程线路方案选择、工程地质条件评价提供了科学依据。     

大广坝土坝放样及精度分析

本文介绍了土坝坡脚线放样方法，并对精度作了分析。