Codes extracted
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Avg read time
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Extract a code
PNG, JPG or PDF · up to 16 MB
Detected OTP
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Pipeline inspector
See the two stages separately — how predicting on the cropped arrow-row differs from predicting on the full image.
Extraction history
| When | File | Result | Status | Time |
|---|
How it works
1
OCR the image
Tesseract reads every token and its position (sparse-text mode).
2
Collect candidates
Every 4–8 digit group becomes a candidate — including decoys.
3
Find the label
Locates the “OTP” / arrow marker and picks the digit group nearest it, biased rightward along the arrow.
4
Fallback pass
For low-contrast images it retries on a grayscale → upscale → denoise → threshold version.
API
Same endpoint the dashboard uses
# POST a file, get JSON back curl -X POST http://localhost:5000/extract \ -F "file=@otp_sample.jpg" # → { "otp": "753050", # "candidates": ["753050","257181","045308"], # "rejected": ["257181","045308"], # "ms": 1240 }