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diff --git a/README.md b/README.md new file mode 100644 index 0000000..8b73e56 --- /dev/null +++ b/README.md @@ -0,0 +1,58 @@ +# Infiray IRG file format parser + +This python module contains a simple parser for the "IRG" file format that the Infiray C200 series thermal cameras use +to dump their raw data. The files contain three things: A thermal image with 8 bit resolution with contrast scaled to +fit the 0...255 range, a thermal image with 16 bit resolution containing absolute temperature values with 1/16 K +resolution, and a JPEG with the image from the low-res visual camera. + +## Requirements + +pillow and numpy + +## API + +Call `infiray_irg.load(data)` with a `bytes` object containing the IRG file's contents. It will return a tuple `(coarse, +fine, vis)` of the coarse and fine images as numpy arrays, followed by the visual image as a pillow image. The coarse +image has dtype uint8 and contains values from 0 to 255, where 0 is the coldest pixel in the image, and 255 is the +hottest. The fine image has dtype float and contains absolute degree Celsius values. + +## Example + +```python +from matplotlib import pyplot as plt +from pathlib import Path + +import infiray_irg + +coarse, fine, vis = infiray_irg.load(Path('example.irg').read_bytes()) + +fig, ((ax1, ax2), (ax3, ax4)) = plt.subplots(2, 2, figsize=(15, 18)) + +ax1.imshow(coarse) +ax1.set_title('Coarse contrast-maximized') + +fine_plt = ax2.imshow(fine) +ax2.set_title('Fine absolute temperatures') +fig.colorbar(fine_plt, ax=ax2, location='right', label='degrees Celsius') + +ax3.imshow(vis) +ax3.set_title('Visual') + +ax4.hist(fine.flatten(), bins=100) +ax4.set_title('Temperature histogram') +ax4.set_xlabel('degrees Celsius') + +fig.tight_layout() +fig.savefig('plot.png') + +print('Coldest pixel:', fine.min(), 'C', 'Hottest pixel:', fine.max(), 'C') +``` + +## Bugs + +If you find a bug, or find a file that this library can't load, please send me an email at <code@jaseg.de>. + +## License + +This module is licensed under the MIT license. + |