基于ERDAS的地表粗粒信息提取模块设计与客户化

DESIGN AND CUSTOMIZATION OF THE MODULE FOR GRAIN SIZE INFORMATION ACQUISITION FROM THE LAND SURFACE BASED ON ERDAS

为提高获取地表粗粒化信息的工作效率,确立了利用ERDAS IMAGINE从RGB三波段光学照片中提取颗粒大小信息的操作步骤(①图片格式转换→②图像裁剪→③粗粒化信息空间模型分类→④小图斑去除分析→⑤矢量化),并集成、开发了相应的客户化应用模块,简化了多文件相同算法处理时不断更改模型输入输出参数的繁琐操作,汉化、直观的模块界面使用方便,能有效地提高图像处理效率。本文举例介绍利用EML宏语言及Spatial Modeler定制客户化界面及实现模块功能的方法,希望能为ERDAS软件在土壤侵蚀、荒漠化监测领域的开发应用提供参考。

In order to improve the work efficiency of grain size information acquisition, this article makes use of ERDAS IMAGINE to establish operation sequence of earth surface grain size information acquisition from RGB three bands optical photos：picture format conversion→picture clipping→grain size information spatial model classification→small picture speckle elimination→（5）vectorization）. At the same time, this aritle also integrates and developes matching customization application module which simplify cumbersome operations of constantly changing model in - out parameter when multifile has the same arithmetic processing. Chinesization and visual inter- face makes convenient to effectively improve the efficiency of picture processing. This article gives an example to introduce how to use EML and Spatial Modeler to customize interface and realize module function. We hope that it can provide reference for soil erosion and desertification monitoring developing and applying in ERDAS.