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本文分二部分介绍了遥感技术在江苏海岸带调查中的应用。对黑白陆地卫星图象进行了反差增强、边缘增强、密度分割等处理,用分层曝光法合成了1:20万假彩色图象,并在此基础上经目视解译绘制了江苏海岸带类型图。应用聚类分析和最大似然比分类法在图象处理系统上做了部分海岸带的分类图,并通过随机抽样检验了图件的精度。结果表明,遥感技术可以在滩面宽阔、地面工作不易进行的江苏海岸调查和研究中发挥重要的作用。特别是,卫星图象的多时相分析可以帮助海洋地貌学家了解江苏淤泥质海滩的演变规律,以便制订出合理的开发利用规划。
This paper introduces the application of remote sensing technology in the investigation of Jiangsu coastal zone in two parts. Black-and-white terrestrial satellite images were contrast enhanced, edge enhancement, density segmentation and other processing, using layered exposure method synthesized 1: 20000 false color images, and on this basis, the visual interpretation of the Jiangsu coast Type map. Using cluster analysis and maximum likelihood ratio classification, the classification map of partial coastal zone was made on the image processing system, and the accuracy of the map was tested by random sampling. The results show that remote sensing technology can play an important role in the investigation and research of the Jiangsu coast where the beach surface is wide and the groundwork is not easy to carry out. In particular, the multi-temporal analysis of satellite imagery can help oceanographers understand the evolution of muddy beaches in Jiangsu in order to formulate a sound development and utilization plan.