One misprinted lot number, one missing expiry digit, one untraceable serial code is enough to have an entire batch stopped by regulators: label verification has no room for close enough.
A drug label carries the lot number, expiry, barcode, and serialized traceability code, the core medium of regulation and anti-counterfeit tracing. After high-speed labeling and coding, a pharma packaging plant needs to verify, unit by unit, whether characters are complete and legible, whether barcodes are readable, and whether serialized codes are unique and compliant.
Conventional inspection relies on template matching, where minor font changes, ink dots, or slight shifts trigger false rejects; and once defects such as missing characters, broken codes, or duplicate serials escape, the cost ranges from a full batch recall to crossing a serialization-compliance red line, an unbearable consequence.
End-to-End In-Line OCR/OCV Verification
DaoAI deploys OCR/OCV in-line inspection, performing both character recognition (OCR) and character-quality verification (OCV) on every label: checking that variable data such as lot and expiry match the host instruction, verifying 1D/2D barcode readability and content, and validating the uniqueness and format compliance of serialized codes. The solution is built for high-speed lines, achieving unit-by-unit full inspection without slowing throughput.
- OCR recognition plus OCV quality check: characters are both read right and printed well
- Dual verification of 1D/2D barcode readability and content
- Serialized-code uniqueness and format-compliance checks, meeting traceability law
- Unit-by-unit in-line inspection, defect labels rejected in real time with zero escape
Label verification is not a sampling probability game but deterministic engineering: unit by unit, at full speed, with zero escape.
After go-live, overall label-verification accuracy reached 99.8%, defect-label escape hit zero, the line held full speed, the serialization trace chain closed completely, regulatory serialization and anti-counterfeit requirements were met, and manual review workload was sharply compressed.