A 3D forest monitoring system, called FORSAT (a satellite very high resolution image processing platform for forest assessment), was developed for the extraction of 3D geometric forest information from very high resolution (VHR) satellite imagery and the automatic 3D change detection. FORSAT is composed of two complementary tasks: (1) the geometric and radiometric processing of satellite optical imagery and digital surface model (DSM) reconstruction by using a precise and robust image matching approach specially designed for VHR satellite imagery, (2) 3D surface comparison for change detection. It allows the users to import DSMs, align them using an advanced 3D surface matching approach and calculate the 3D differences and volume changes (together with precision values) between epochs. FORSAT is a single source and flexible forest information solution, allowing expert and non-expert remote sensing users to monitor forests in three and four (time) dimensions. The geometric resolution and thematic content of VHR optical imagery are sufficient for many forest information needs such as deforestation, clear-cut and fire severity mapping. The capacity and benefits of FORSAT, as a forest information system contributing to the sustainable forest management, have been tested and validated in case studies located in Austria, Switzerland and Spain.

三维森林监测系统，被称为FORSAT（一坐为ellite非常高的分辨率的图像处理平台为est评估），用于从超高分辨率（VHR）卫星图像中提取3D几何森林信息并自动进行3D变化检测。FORSAT由两个互补的任务组成：（1）卫星光学图像的几何和辐射处理以及通过专门为VHR卫星图像设计的精确而强大的图像匹配方法重建数字表面模型（DSM），（2）3D表面比较用于更改检测。它允许用户导入DSM，使用高级3D表面匹配方法对齐它们，并计算历元之间的3D差异和体积变化（以及精度值）。FORSAT是一种单一来源的灵活森林信息解决方案，允许专家和非专家遥感用户以三个和四个（时间）维度监视森林。VHR光学图像的几何分辨率和主题内容足以满足许多森林信息需求，例如砍伐森林，砍伐森林和火灾严重程度图。FORSAT作为有助于可持续森林管理的森林信息系统的能力和收益已经在奥地利，瑞士和西班牙的案例研究中得到了测试和验证。