Work with declassified keyhole satellite images.
Project description
A library and command-line tools for manipulating declassified imagery.
The primary use for this right now is mosaicking the separate “panel” scans of declassified imagery from EarthExplorer.
Usage
There are two steps to mosaick the panel images:
Use the register subcommand to measure the panels’ overlap. This will typically look something like:
keyhole register -j coreg.json name_*.tif
This will create coreg.json with the overlap information.
Then use the mosaick subcommand with the information generated in the previous step to combine the images:
keyhole mosaick -o output.tif -j coreg.json name_*.tif
The shrink argument is useful for creating smaller preview images:
keyhole mosaick -o out.jpg --shrink 10 -j coreg.json name_*.tif
To create tiled pyramidal images:
keyhole mosaick -o out.tif \ --tile --pyramid --tile_width 256 --tile_height 256 \ -j coreg.json name_*.tif
For more information, see keyhole -h.
Installation
Before installation, you must have libvips installed. The procedure for that varies by platform; see the libvips documentation for more info. After that, simply:
pip install keyhole
This installs both the package and the command-line tool keyhole.
You can also run the code as a python module with python -m keyhole.
If you’ve cloned the keyhole repo and you have the dependencies described in pyproject.toml, you can simply run the script at the root of the repo:
python keyhole.py -h
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