高分辨率遥感土地覆盖分类技术的应用研究——以重庆市黔江贫困区为例

针对贫困区生态环境与资源的地表覆盖精细化调查需求,本文利用高分辨率遥感影像开展了土地覆盖信息提取的方法和应用研究.重点分析了高分辨率影像均值漂移分割,多特征提取与分析,对象级样本采集以及监督分类等技术,并综合实现了流程化的对象级土地覆盖分类.结果表明,本文串联的高分辨率影像分类技术能生成较精细的土地覆盖专题图,可及时为贫困区生态资源环境评价,碳核算等应用提供较可靠的地表覆盖数据.

Application of Land Cover Classification Techniques in Poverty-stricken Areas Using High Resolution Remote Sensing:A Case Study of Qianjiang District of Chongqing City

To meet the actual needs of refined land-cover information in poverty-stricken areas' ecological environment assessment and resource survey, this paper studies the technology and application of accurate land-cover classification based on the high-resolution satellite images. This article focuses on the technologies of high-resolution image segmentation using the mean shift algorithm, multiple feature extraction and analysis, automatic object-sample selection, and supervised classification. Then, we give a complete realization of the streamlined object-based land-cover classification by lining up the above technologies. Finally, taking Qianjiang district of Chongqing city as an example, we carry out a land cover information extraction experiment in its poverty-stricken areas. The experimental results show that the accurate and detailed land-cover maps can be obtained using the provided technology. The meticulous and reliable land-cover information can promptly provide a base-data-support for the eco-environmental assessment and carbon accounting applications in the poverty-stricken areas.