土地变更调查遥感监测中QuickBird遥感影像处理方法的讨论

遥感技术在全国土地变更调查工作中得到广泛应用,主要通过从最新获取的遥感影像上提取所需信息,再对比之前的数据库信息进行分析得到一定时间阶段的土地变更情况。文章针对在全国土地变更项目中使用较广的QuickBird影像,以QuickBird影像的全色影像、多光谱影像、前时相基础底图及高程数据为基础,对影像进行拼接处理、降位处理、数据融合、影像彩色合成,以及几何纠正等处理过程,并通过实验确定一个最佳处理流程。最终得到地类清晰可见、容易判读的影像,为之后的影像信息提取打好了基础。

Discussion on Method of QuickBird Image Processing in Remote Sensing Monitoring of Land Use Change Investigation

The remote sensing technology obtains the widespread application in the national land change investigation work.The certain stage land change situation mainly obtained through the comparing and analyzing the extracted information from the newest remote sensing images and the database information before.Aiming at the widely used QuickBird image in the national land use change project,based on panchromatic and multi-spectral QuickBird image,the previous fundamental base map and elevation data,this paper implemented the stitching process,bit processing,data integration,image color composite,and geometric correction of QuickBird image,and determined the most appropriate treatment process.Finally,this paper obtained the image which is easy to interpret to build the foundation for after image information extraction.