CAJ | 학술논문

本文以吉林省靖宇县西南部的龙湾火山群为例,进行了火山口地貌图像识别方法探讨.在提取过程中,根据研究区内火山口均位于熔岩台地上的特点:首先,将研究区划分为平原和山地等地貌类型;然后,将生成的坡度数据与DEM高程数据相乘,实现对DEM数据按照地形高低起伏的加权,以突显火山口在高程数据上的表现.根据火山口"中间低,四周高"的形态特点及在DEM上的表现,建立了火山口识别模板,对火山口进行识别.最后,参照研究区内的遥感影像,对提取的结果进行验证和修改.
본문이길림성정우현서남부적룡만화산군위례,진행료화산구지모도상식별방법탐토.재제취과정중,근거연구구내화산구균위우용암태지상적특점:수선,장연구구화분위평원화산지등지모류형;연후,장생성적파도수거여DEM고정수거상승,실현대DEM수거안조지형고저기복적가권,이돌현화산구재고정수거상적표현.근거화산구"중간저,사주고"적형태특점급재DEM상적표현,건립료화산구식별모판,대화산구진행식별.최후,삼조연구구내적요감영상,대제취적결과진행험증화수개.
In this paper, the Longwan volcanic group which locates in the southwest part of Jingyu County, Jilin Province is taken as an example for extracting volcanic landforms information. In the process of extraction, according to the chief feature that the volcanic cones are situated in lava platform, the study area is classified as plain and mountain firstly. Then, the slope data are multiplied by the elevation data, which is similar to weight the elevation in accordance with the relief. It is a way to better highlight the craters in the elevation data on the performance. Taking into account the craters' form characteristics, that is, lower in the intermediate, higher on the surrounding, and their performance on the DEM, a template for craters identification can be established. Finally, the results of the extraction need to be verificated and revised based on remote sensing image.