IDRISI是一个将地理信息系统和图像处理功能完美结合的软件,它所提供的250多个模块能有效地显示、处理和分析各种数字化的空间信息。纵观目前的空间信息产业领域,恐怕还没有第二种软件能像IDRISI那样,在同一个系统中提供如此齐备、完善的GIS和图像处理工具。
1、 使用IDRISI最新开发的土地变化模型(land change modeler)工具,可以模拟和预测土地覆盖的变化,并对造成这些变化的因素和机制进行分析针对生态可持续性研究而开发的土地变化模型工具,有效集成了以下几方面的功能:
(1) 土地覆盖变化评估;
(2) 土地覆盖变化预测;
(3) 土地覆盖变化对动植物生境和生物多样性影响的生态评估;
(4) 生态调节规划
2、使用一套完整的图像处理技术对遥感图像进行处理,包括独具特色的软分类(soft classifier)分类器、神经网络(neural network)分类器以及决策树分析(decision tree analyses)分类器
IDRISI拥有不同凡响的图像分类工具,其中具有自我学习能力的三种神经网络分类器最具特色,它们分别是:多图层识别感知器(multi-layer perceptron),自组织地图(self organizing map),以及基于可适应共鸣理论(Adaptive Resonance Theory, ART)与模糊数学理论的模糊ART地图(fuzzy ART map)。
3、利用边缘切割决策支持(cutting-edge decision support)和不确定性管理(uncertainty management)工具对资源进行分配,并建立适宜性分布图
右图是利用IDRISI所作的研究实例之一:未来海平面上升对越南某沿海水稻产区可能造成的影响。这一研究的重要内容就是充分考虑了高程数据与海平面上升的不确定性,并将二者紧密结合,从而预测海侵及受淹地区。左上角那幅图就是基于某一可接受的风险水平所作的洪水分布概率图。在此基础上,利用多准则分析(multi-criteria analysis)模型对洪水发生后人们的重新安置做出预测,并生成一幅土地覆盖的预测图。
IDRISI的最新版本Taiga已于2009年1月在美国发布.该新版本包含了更多和更复杂的时间序列可视化和分析,以及地球趋势模型(Earth Trends Modeler),为当今炙手可热的气候变化课题提供了有效的分析工具.
Idrisi 17.02 The Selva Edition - LAVteam | 404 MB
IDRISI Selva is an integrated GIS and Image Processing software solution providing nearly 300 modules for the analysis and display of digital spatial information. IDRISI offers the most extensive set of GIS and Image Processing tools in the industry in a single, affordable package. With IDRISI, all analytical features come standard—there is no need to buy costly add-ons to extend your research capabilities.
IDRISI Selva provides:
- A complete GIS analysis package for basic and advanced spatial analysis, including tools for surface and statistical analysis, decision support, and change and time series analysis
- A complete Image Processing system with the most extensive hard and soft classifers in the industry, including machine learning classifiers such as neural networks and classification tree analysis, as well as image segmentation for classification
- Integrated modeling environments including the Earth Trends Modeler for image time series of environmental trends and Land Change Modeler for land change analysis and prediction, a critical component for REDD projects
- Complete utilities for import and export along with a comprehensive set of documentation and tutorials.
Version 17.02 Update Details
The IDRISI Selva Service Update to v17.02 includes a fix to Land Change Modeler. In some cases during the change prediction phase using multiple stages and dynamic driver variables, the quantity of change may be incorrect. This issue has been resolved.
发布日期: 2013-05-24