1. A method for extracting feature data from very high resolution (VHR) remotely-sensed multispectral Earth imagery, comprising: storing VHR remotely-sensed multispectral Earth image data in a file system; providing a plurality of feature extraction modules, wherein each respective feature extraction module is operable to analyze the image data to generate feature data regarding the image data; accessing the VHR remotely-sensed multispectral Earth image data in the file system with one or more of the plurality of feature extraction modules, wherein the one or more feature extraction modules each access the file system using a common interface format; executing the one or more feature extraction modules to generate feature data corresponding to the VHR remotely-sensed multispectral Earth image data; and receiving the feature data at the file system from the one or more feature extraction modules, wherein the feature data is received from each of the one or more feature extraction modules using the common interface format.