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本文论述了空间实验室测量相机(MC)拍摄的彩色红外立体像对在中比例尺地形制图、正射影像地图以及土地资源调查中的应用可能性,给出1:10万和1:20万比例尺的制图例证,表明平面位置和高程精度能满足1:10万比例尺地形图规范要求;1:10万比例尺影像图可以满足专题制图精度要求。 应用数字图像处理技术,将二种来源(MC,MSS)的遥感数据做数字匹配,并进行信息提取、组合、增强和分类等处理,其结果与原始图像比较表明有独特的优越性,与MSS原始数据相比,图像的空间分辨率明显提高,各种类型界线更分明,可分辨类目增多;而与MC原始图像相比,其光谱特性获得改善且能保持原有的空间分辨率。土地利用类型解释精度与MSS和MC原始图像比较分别提高7—20％左右。
This article discusses the application possibilities of color infrared stereo image pairs taken by space laboratory measurement cameras (MCs) in medium-scale topographic maps, orthophoto maps and land resources surveys. The 1: 100,000 and 1: 200,000 scales The mapping example shows that the plane position and elevation accuracy can meet the 1: 10 000 scale topographic map specifications; 1: 100,000 scale image map to meet the requirements of thematic mapping accuracy. Using digital image processing technology, the remote sensing data of two kinds of sources (MC, MSS) are digitally matched, and the information is extracted, combined, enhanced and classified, and the results are compared with the original images to show the unique advantages. Compared with the MSS Compared with the original data, the spatial resolution of the image is significantly improved, the boundaries of various types are more distinct and the number of distinguishable categories is increased. Compared with the original MC image, the spectral characteristics are improved and the original spatial resolution is maintained. The accuracy of interpretation of land use types increased by about 7-20% compared with the original images of MSS and MC, respectively.