| ▲ | Reed-Solomon for OCR: error correction for messy printed codes(github.com) | |
| 11 points by chasangchual 11 hours ago | 4 comments | ||
| ▲ | Dwedit 9 hours ago | parent | next [-] | |
Do we have any screenshots of what the text looks like, and what the error correction looks like? | ||
| ▲ | chasangchual 11 hours ago | parent | prev | next [-] | |
I built a small Python Reed-Solomon codec aimed at OCR workflows where printed codes may be degraded by dot-matrix printers, missing pins, fading ribbons, low resolution, dirt, or partial character damage. It uses GF(256) Reed-Solomon correction plus an OCR-safe parity representation using a reduced alphabet that avoids confusing characters like 0/O, 1/I/l, 5/S, 8/B, etc. Each parity byte is encoded as two OCR-safe characters, so printed labels or IDs can be scanned, checked, and corrected when OCR makes a limited number of symbol mistakes. The repo includes a ReedSolomonForOcr class, OCR-safe parity helpers, a demo, and unit tests with deterministic correction scenarios. | ||
| ▲ | eventualcomp 8 hours ago | parent | prev | next [-] | |
[dead] | ||
| ▲ | priyankarr 11 hours ago | parent | prev [-] | |
[flagged] | ||