Once colors become saturated, the image loses detail which can never be recovered. Rather than make assumptions about how the customer will want to increase the brightness and intensity of the images, we provide a consistent set of patterns with no saturated colors, and let the customer make the adjustments desired. In this way, the customer has greater control over the color range. Searching and retrieval can be done in two ways. Interactive searching is done with a browsing program that includes keyword searching.
Automatic retrieval is for users who write their own database construction programs.
A library of subroutines is provided for PC, SGI, and Sun platforms that can be incorporated in the users program to find patterns according to database search criteria. An example of the search software is implemented here with a limited set of the total search fields. Keyword searches are available. ITD files are produced by the Defense Mapping Agency and can be used to construct simulator databases. There is not nearly as much coverage with ITD as there is with the established DFAD products, but DFAD has only a few types of feature data compared to the many types in the library.