2012 Volume 20 Issue 1 Pages 23-30
In Japan, several prefecture-wide projects developing digital orthophoto have been carried out in these years after 2005 under the cooperative scheme between a prefectural government and municipalities. In this article we quote the cases of cooperative orthophoto development in the U.S. and discuss the difference from the cases of Japan to search hints for sustainable development and maintenance of the geospatial data in wide area like national coverage.