Dezoomify for maps.arcanum.com

[anaveem]

Any ideas on how to download from maps.arcanum.com? Arcanum also hosts the Hungaricanum resource, but that one uses a different tiler.

Example: https://maps.arcanum.com/en/map/europe-19century-secondsurvey/

There is a json file showing this tile structure, but I'm unable to figure out. Using {{x}} and {{y}} doesn't work here. https://tiles.arcanum.com/mercator/europe-19century-secondsurvey/{z}/{x}/{y}

thanks

[DigitalCurator]

Habsburg 1869 Survey, cropped.

[carameljm]

I would like this too. Would also need to select which part of total map is wanted.

[DigitalCurator]

I would like this too. Would also need to select which part of total map is wanted.

Send me coords.

[awtur]

I would like this too. Would also need to select which part of total map is wanted.

Send me coords.

Didn't notice your post until now. Can you tell us how you managed to download? I'd like to get parts of the map of Wallachia, the one here (https://maps.arcanum.com/en/map/europe-19century-secondsurvey/) and here (https://maps.arcanum.com/en/map/romania-1790/).

[awtur]

I'm going to post a more straightforward solution for those who need a part of these maps, which is to create a series of screenshots in TIFF and let Photoshop automatically merge them into a panorama. Photoshop is incredibly intelligent at merging images and you won't notice any artificial seams as long as there is enough overlap between each tile (maybe 10-20%). With that said, here are some instructions (I'm on Windows+Chrome):

1. Get a screen capture program like ShareX that will automatically save your captures to TIFF.
2. On the maps page, go into Full Screen mode and press Ctrl+Shift+I to bring up Inspect Element in Chrome. Use the "select an element" tool to select and delete all elements you don't want in your capture like the zoom in and out buttons, the coordinates, etc. All you should have left is just the map.
3. Zoom in to get enough detail (as needed) and plan ahead how many screenshots you will be taking. Now, figure out how many arrow key presses it takes to move to the next screen while maintaining a 10-15% overlap with the previous. In my case, it was 15 keypresses left/right and 8 keypresses up/down. I suggest moving in a snake-like pattern; for instance if your map consists of 4 x 4, start at the top, move down 4, move 1 right, move up 4, move 1 right, etc.
4. Open Photoshop, File-->Script-->Load Files into Stack and check "automatically align source images". Photoshop will automatically merge them, so you don't need to prearrange the canvas size.
5. OPTION 2 is to align the layers manually by not checking "automatically align source images", which will first require enlarging the canvas size. This will take a lot of extra time but allows you to merge the layers perfectly down to the pixel. Zoom out, align all the tiles roughly at first, then zoom in to 400% and, tile by tile, use the arrow keys to align overlapping layers, moving to the next tile in a snake-like-pattern.
6. Crop out the misaligned edges that are not important to you by using the rectangular marquee tool to select the part of the map you want, then go to Image-->Crop.
7. Export-->Export As... and save to JPG or PNG.

[DigitalCurator]

Why not buy their original resolution maps to support Arcanum so they can continue to publish more wonderful maps in future?

[awtur]

Why not buy their original resolution maps to support Arcanum so they can continue to publish more wonderful maps in future?

For 2 main reasons:

1. My original goal was to download the entire map of 19th century Wallachia, which would cost a whopping €1000! The parts I ended up stitching would have covered probably 4 tiles so €40, still a lot of money!
2. I don't appreciate having to pay for public domain works, regardless of the costs involved in scanning them. These maps should be free to download just like the vast majority of media materials in the Internet Archive and in the online collections of educational and cultural institutions (museums, universities, etc).

Having said that I did get a one month subscription to their Newspaper database because here I had absolutely no other choice. It's a great resource for conducting genealogical research.

Let me know what you think, @DigitalCurator, and be honest. You wont hurt my feelings :)