遥感影像人机交互判读系统及其技术特点

在Windows NT支持下，采用C＋＋和面向对象方法设计，自主开发的一个微机遥感影象人机交互判读系统。它在实现人工目视判读与数字影像处理、遥感和地理信息系统、高新技术与传统地学知识结合，协调遥感数据容量大与微机空间资源有限、快速作业要求与工业内容繁琐复杂，严格有序的计算机作业和判读人员作用自由发挥之间的矛盾方面，采取了一系列颇具新意的技术措施，形成了系统独具的一些技术特点，为广大判读人员提供了一个灵活、方便、高效地进行遥感影像人机交互判读工具。

An Interactive Image Interpretation System and its Characteristics

In order to make image interpretation more accurate, efficient and flexible, and to enable remote sensing more useful in updateing some of data sets in GIS, an Interactive Image Interpretation System(I3S)has been developed in Windows NT andVC++6.0 environment since 1998. I3S,in fact, is a raster-based systemwith a structure of toolbox and friendly interfaces. Through an interactive way, the system integrates the advantages of computers and human brain, functions of image processing system and GIS, experience of visual image interpretation and knowledge of geosciences to- gether. The system, ingeneral, can be operated in three modes:module application, single systemapplication andmulti- system application. The firstmode means one of the modules in the system is used for solving some of problems in an im- age interpretation process, such as registration of image and corresponding map, etc. In the second mode,I3S is applied to image interpretation with small or medium scale through the combination of some function modules of the system. The last one is the mode for the task with large scale through networking and operating of multiple I3S together. The module functions ofthe systemcan be divided intotwo categories:supportmodule and interpretationmodule functions. The former consist of those functions to support system operation in normal. The functions are data input and output, registration of images and maps, image enhancement and data fusion, image filtering, extraction of double edges, RGB-IHS transfor- mation, color exchange, data conversion from vector to raster or reverse, and interface to network, etc. The latter in- cludes the modules to support image interpretation or classification directly, which are map layer manager, classification manager, image browser, tools of manual interpretation (such as pan brush, semi-automatically or automatically edge tracking, attribute assignment, rubber, etc.)and post-processing of classification, statistical result generation, graphic editing in rasterorvector format, etc. In the systemapplicationmode, the different combinations of the functionmodules can flexibly formulate a series of systemfunctions for image interpretation. They are as follows:interactive visual interpre- tation, supervised classification, image-segmented classification, ancillary band-added classification, dynamic change interpretation and human-machine mixed interpretation. Therefore, I3S gives interpretation experts more space to play their leading roles in image interpretation. The principle, architectures, functions and characteristics of the system are presented in the paper.