Industrial Barcode Reader: Camera-Based Reading for Harsh Conditions
Wrinkled labels, shiny metal, curved surfaces: where classical readers struggle, camera-based reading delivers read rates above 99%.
Laser-based readers need a fixed distance and orientation. When the packaging wrinkles, the code is printed on a curved surface or laser-marked on metal, the read rate drops quickly.
Enhance the image first
In camera-based reading the image is normalized first: glare is suppressed, contrast balanced, perspective corrected. Then the code is located, decoded and its quality grade computed according to ISO 15415/15416. Low-grade codes reveal a printing problem before the product ships.
Multiple codes, one frame
All labels on a box are read in one frame; the data is matched against the order record and mismatched products leave the line. For DPM (direct part marking) codes we use low-angle and dome lighting setups.