测绘工程专业英语 Unit 27 Developments of Photogrammetry.docxVIP

Unit 27 Developments of PhotogrammetryPhotogrammetry can be defined as the art, science, and technology of obtaining reliableinformation about physical objects and the environment by recording，measuringandinterpretingphotographic images(AmericanSocietyfor PhotogrammetryandRemote Sensing 1987).（摄影测量可以定义为通过记录、量测和解读相片来获取关于物理实体及环境的可靠信息的科学和技艺。）Photogrammetry is the technique of measuring objects (2D or 3D) from photographs, but it may be also imagery stored electronically on tape or disk taken by video or CCD cameras or radiation sensors such as scanners.（摄影测量是在相片上量测物体（二维或三维），但也可能是通过电子手段【electronically】存储在磁带上或摄像机、CCD相机或像扫描仪一样的辐射传感器自带的盘上的图像。）The most important feature of photogrammetry is that the objects are measured without being touched.（摄影测量最重要的特征是物体不经过接触就可量测。）Although the term Photogrammetry can apply to measurements from ground photographs,modern photogrammetric techniques are most often applied to aerial and satellite images.（尽管摄影测量这个词能应用于对地面相片的量测，现代摄影测量技术更常常用于航空和卫星图像。）Historically, the traditional, and largest application of Photogrammetry is to extract topographic information(e.g., topographic maps)from the aerial images, to support civil engineering projects.（历史上，摄影测量传统的最常见的应用是从航空影像中提取地形信息（例如地形图），以提供对土木工程项目的支撑。）Today, with advancements in computer technology, information can be gathered，assembled, sorted, and reported in expanded ways.（如今，随着计算机技术的进步【advancement】，信息可以以更多的方式被收集、整合、存储和生成报告。）These developments have thrust photogrammetry from a limited support service role to the forefront of digital interactive information gathering.（这些发展已经推动了摄影测量从有限的支撑服务角色向数字交互式信息收集的最前沿转变。）One of the most common uses of photogrammetry is the analysis of aerial photographytoextract ground elevations for the production of topographic maps.（摄影测量的一个最常见的应用是分析航空相片提取地面高程来生成地形图。）However, the field also includes the production of digital orthophotographs and digital terrain models.（然而，这个领域也包括了生成数字正射影像以及数字地面模型。）Principally, photogrammetry can be divided into aerial photogrammetry and terrest