Yet the area around Japan was not well charted, and even the native Japanese map barely extended as far as the Korean Peninsula and Hokkaido. These maps were displayed next to printed maps carried by the explorers to Japan in 1549. I have not completely translated this article, but it appears to say that missionaries taught their methods of mapmaking, and shared their maps with the Japanese government. These byoubu would have been copied from those maps, and certainly would have been quite expensive to produce. I do not know who commissioned these maps, they may even have been produced for the missionaries.
Several features are of particular interest.
The Japanese maps have the sections of Japan marked with borders, labeled with Kanji writing in small vertical script. These might represent regional or political boundaries of the late Muromachi era, but even in the original magazine photo, the script is too small to read. These details are virtually invisible in the image below, so I have provided a larger image. To load a 1.6Mb JPEG image in a new window, Click Here or on the image. While the Japan map is a single color, with interesting details like a small image of Mount Fuji in the middle, the World map shows political boundaries delimited by colors, and unexplored areas are dark brown, the same color used to represent Japan.