https://github.com/caged/tile-stitch
stitch together image tiles for large-format prints
https://github.com/caged/tile-stitch
Last synced: 6 months ago
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stitch together image tiles for large-format prints
- Host: GitHub
- URL: https://github.com/caged/tile-stitch
- Owner: caged
- License: mit
- Created: 2016-09-17T17:59:05.000Z (almost 10 years ago)
- Default Branch: master
- Last Pushed: 2024-01-26T13:56:19.000Z (over 2 years ago)
- Last Synced: 2025-01-20T10:48:24.237Z (over 1 year ago)
- Language: HTML
- Homepage:
- Size: 696 KB
- Stars: 13
- Watchers: 2
- Forks: 2
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
- License: license
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README
This project was born out of a desire to print large areas of satellite photos of Portland, OR that are only available via smaller 256x256px tiles. It allows you to fetch and merge tiles from [Portland's ArcGIS server](https://www.portlandmaps.com/arcgis/rest/services/Public). Though I've only tested in with Portland's ArcGIS server, it _might_ work with other tile servers with a few updates.
Tested on OSX 10.11.6 with Python 3.5.2. First install the requirements.
```
script/bootstrap
```
Open up the server to pull up a debug grid view. Each grid contains a tile signature as z,x,y.
```
script/server
open http://localhost:8000/html/select.html
```
Now download tiles at zoom level 19 starting at the grid point `[83513, 187554]` and going to `[83566, 187555]`. Tiles are stored and cached in the `tiles` directory in the z/x/y.jpg format. You can run `script/fetch --help` for more info, but quickly:
* `--layer` - You can find a list of available on the ArcGIS server, but I've only tested with the satellite photo layers.
* `--route` - Generally this is the layer name found in the MapServer URL. For instance, the route name for [this url](https://www.portlandmaps.com/arcgis/rest/services/Public/Aerial_Photos_Summer_1998/MapServer) is "Aerial_Photos_Summer_1998."
```
./script/fetch -z 19 \
-x0 83513 \
-y0 187554 \
-x1 83566 \
-y1 187555 \
--route Aerial_Photos_Summer_1996 \
--layer Public_Aerial_Photos_Summer_2015
```
Now we can merge the set of tiles we just downloaded into one large image. You can find more info by running `script/merge --help`, but quickly:
* `-o` - The directory to store the output images.
* `-d` - One or more input directories to read from. Sometimes it's useful to merge a bunch of layers in one go.
```
./script/merge -o ./out \
-z 19 \
-x0 83513 \
-y0 187554 \
-x1 83566 \
-y1 187555 \
-d tiles/Aerial_Photos_Summer_2015
```