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Detection of Detail Land Cover Change by Use of Digital Data from Air Survey

利用航空测量数字数据检测详细的土地覆盖变化

基本信息

批准号：
61460170
负责人：
MORI Chuji
金额：
$ 3.65万
依托单位：
Okayama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61460170/
关键词：
remote sensing land cover land use regional survey electro-magnetic wave principal components sequential change 写真測量計測地域計画分類

项目摘要

Land coner land use and a trend of them are fundamental data for every type of regional planning. This means that according to the purpose of a planning or project, the necessary characteristics of land cover data should be different, or suitable materials differ from project by project. As to Japan, we already had land cover and land use maps and other fundamental survey data. However, it is a bottleneck that the survey data are outdated because we can not check up so many times. The one way to improve this situation is to detect changed places as soon as possible. After the changed places were found, It is not difficult to check up detail land converges in that places. Based on these considerations, Detection methods of changed places were investigated by use of the data obtained from CCD line sensors. In a total system to detect changed places, the main subjects investigated are as follows. (1) The most important subject is geometrical accuracy. In order to perform presize orientation of images, the orientation parameters are determined under consideration of the characteristics of errors in ground surveys. (2) Techniques of digital stereo-matching by use of image correlations are improved in order to realize an automatic processing, but miss-matchings still take place a little. (3) Change detection methods by use of several types of the images which are produced by dencity differnces of two images obtained on different dates are investigated. Principal component images are also included. In this study, simple decision trees are considered.

土地利用及其趋势是各类区域规划的基础数据。这意味着根据规划或项目的目的，土地覆盖数据的必要特征应该不同，或者不同项目的合适材料也不同。至于日本，我们已经有了土地覆盖和土地利用地图等基础调查数据。然而，调查数据过时是一个瓶颈，因为我们无法多次检查。改善这种情况的一种方法是尽快发现发生变化的地方。找到变化的地方后，不难查出该地方的详细土地汇聚情况。基于这些考虑，利用CCD线传感器获得的数据研究了变化位置的检测方法。在检测变化位置的整个系统中，主要研究对象如下。 (1)最重要的课题是几何精度。为了对影像进行预定尺寸的定向，需要考虑地面测量误差的特点来确定定向参数。 (2)改进了利用图像相关性的数字立体匹配技术，实现了自动处理，但仍存在少量误匹配现象。 (3)研究了利用不同日期获得的两幅图像的密度差异产生的几种类型图像的变化检测方法。还包括主成分图像。在本研究中，考虑简单的决策树。