Stanford University digitizes old map "Omi national picture" 200 years ago which was used for Japanese tax collection

Japanese universities andA map production company digitizes Japanese old maps and publishes themAlthough it may be, an old map that the American Stanford University was made in 1837 "Ohmi country pictureI digitized it. Stanford University has released a process to digitize it, which is interesting content, how to digitize the Omi national picture used for tax collection in Japan.

Adventures in oversized imaging: digitizing the Ōmi Kuni-ezu Omi Kunikata Japanese Tax Map from 1837 | Stanford University Libraries
https://library.stanford.edu/blogs/digital-library-blog/2015/11/adventures-oversized-imaging-digitizing-omi-kuni-ezu-jin-jiang

Omi national picture is an old map which was stored in the library of Stanford University and was handwritten in 1837. Of particular note is the size, there are about 3.3 m in length and about 5.2 m in width. This time, as part of the "digitization project of gigantic map" carried out by Stanford University, Omi national picture is to be digitized.


Omi nation picture is too big, photographing for digitization was done at the entrance hall of the school building, in the middle of the night when there was no student. Canon's digital single lens reflex camera "EOS 6D"Schneider's 100 mm lens was used, taking a total of 158 images. The resolution of each image is 165 ppi.


All 158 images are joined together in Photoshop and processed. The number of pixels of the digitized Omi national picture was 33,442 x 22,939, reaching 778,800,000 pixels, and it saved in the TIFF file format, it became 1.27 GB.


Digitized Omi national picture can actually be seen from the following URL.

Ōmi Kuni-ezu - Ohmi Kunikata | Stanford Digital Repository
https://purl.stanford.edu/hs631zg4177


The resolution is high enough to see clearly the marks of the brush when you look enormously up.


By looking at the map about 200 years ago, you can see the scarred places. Instead, it is a level of surprise to be clear to the damaged part.


In addition, it is also possible for Stanford University to download digitized Omi national picture, you can also download the original size of 33,442 × 20,239.