【摘要】 本文介绍了结合铁路新线勘测、旧线改建,以南方山区大瑶山长隧道、北方平原区新(乡)荷(泽)线黄河桥位、西北青藏线唐古拉高原冻土、青(海)新(疆)线盐渍土分布区等作为实验点段,用美国陆地卫星MSS的CCT磁带,在IPOS—101数字图象处理系统上进行的遥感数字图象处理的方法及应用效果。数字图象处理能够把遥感获得的庞大繁杂的电磁波信息,进行快速严密的数字处理,能够使被干扰和歪曲的图象得到恢复。通过各种增强处理,可使模糊的图象变得清晰,使色调单一的黑白图象变为鲜艳夺目的彩色图象,可以压缩和减弱那些不利于判释的干扰信息,突出强调波谱信息和判释目标。在某种情况下,经过图象分类处理,还能迅速准确的进行自动识别,获得各种专业图件和统计数据。实验结果表明,结合铁路工程地质勘测应用,数字图象处理在目前阶段宜以图象增强为主。更多还原

【Abstract】 This paper deals with the digital image processing of remote sensing, which was carried out in IPOS—101 digital image processing system, with the help of the CCT image tape of American Landsat MSS, in the light of the improvement of the existing railway and the reconnaissance of the new lines. The experimental sites were located at The Dayaoshan long tunnel in Southern China, the yellow River Bridge on the Xinho railway line, the flatlands in Northern China, the frozen earth on the Tangula Plateau of the Qingzang railway line in Northwest China, and the salt soil district on the Qingxin railway line. The use of digital image processing can make the enormous and complicated electromagnetic wave information to be treated rapidly and strictly, and also can make the disturbed and distorted images to be revised and justified. Through some kinds of enhancement treatment of images, the blurred images can be made distinct, the monochromatic black and white photoes can be changed into colourful pictures, the unfavourable interference for geological interpretation can be gotton rid of, or lessened, also the wave spectrum and interpretation target can be emphasized. In particular conditions, as soon as the images being treated classifiedly, it can be judged automatically, and then all sorts of figures and statistics can be obtained. Experimental result shows that through the application of geology engineering surveying, at present stage, the digital image processing must rely mainly On image enhancement.更多还原