oskar-j

oskar-j/walsh-hadamard-transform

Compressing images with the Walsh-Hadamard transform. A pure Python and numpy codec with its own BMP, PPM, PAM and TIFF I/O, as a CLI and a library.

1 good first / help-wanted issue · Python · last activity Sep 20, 2026

6 stars 5 forks 6 watchers Python MIT License
compress-images dsp hadamard-matrix image-codec image-compression image-processing netpbm numpy python walsh-functions
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1 Open Issue Need Help Last updated: Sep 20, 2026

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Three small fixes: NaN coeff threshold, BMP pixel offset, staged-write error messages about 1 month ago
good first issue
oskar-j/walsh-hadamard-transform
6

Compressing images with the Walsh-Hadamard transform. A pure Python and numpy codec with its own BMP, PPM, PAM and TIFF I/O, as a CLI and a library.

Python
#compress-images#dsp#hadamard-matrix#image-codec#image-compression#image-processing#netpbm#numpy#python#walsh-functions