Military requirements for large scale training missions on computer image generation (CIG) systems have placed increased emphasis on the CIG data base development process. General Electric produces large scale data bases in a semi-automatic process involving the transformation and enhancement of Defense Mapping Agency digital data bases into CIG scene descriptors. The enhancement process is the limiting factor in the evolution of a fully automated data base development system, and suggests a requirement for a single source data base. Future General Electric CIG systems will incorporate automation technology to allow for low cost generation of visual scenes meeting strategic applications of specific weapon systems trainers.