CAJ | 학술논문

桂西-滇东南是植被高覆盖区域,地质遥感信息相对于地表覆盖(植被)信息而言相对较弱.有效消除地表覆盖信息、突出地质遥感信息是遥感地质专题信息提取的瓶颈之一.本文运用K-L变换提取代表地质构造信息的成分波段,有效滤去地表覆盖信息;利用灰度共生矩阵、定向检测和环形滤波检测相结合的方法,并通过阈值设置,提取地质构造的遥感专题信息,从而达到实现计算机自动提取地质构造信息的目的.经过野外实地验证,结果表明:地质构造信息提取精度较高,特别是一些小的地质构造信息也能有效提取;但是环形地质构造信息没有有效提取,地表覆盖类型对地质构造信息的提取仍有较小影响.
계서-전동남시식피고복개구역,지질요감신식상대우지표복개(식피)신식이언상대교약.유효소제지표복개신식、돌출지질요감신식시요감지질전제신식제취적병경지일.본문운용K-L변환제취대표지질구조신식적성분파단,유효려거지표복개신식;이용회도공생구진、정향검측화배형려파검측상결합적방법,병통과역치설치,제취지질구조적요감전제신식,종이체도실현계산궤자동제취지질구조신식적목적.경과야외실지험증,결과표명:지질구조신식제취정도교고,특별시일사소적지질구조신식야능유효제취;단시배형지질구조신식몰유유효제취,지표복개류형대지질구조신식적제취잉유교소영향.
The western Guangxi -southeastern Yunnan area is covered with thick vegetation, and hence the extraction of geological structure information from RS images meets with difficulty in that the land cover types constitute the major information in RS images. Land cover types must be removed in extracting geological structure information. In this paper, the components of geological information extracted by the K-L method were used for effective elimination of the land cover information. Geological structure information was extracted by using gray level co-occurrence matrix and directional detection. Field inspection reveals that the precision of the results can be evaluated. The results show that the precision of extracting the geological information, especially the precision of extracting small structure information, is fairly high. Nevertheless, the circular structure information cannot be effectively extracted, and the land cover still affects the results to some extent.