Image-based readers surpass laser scanners in code-reading ability, says Cognex

摘要

A technology shift is taking place in ID and 2D code-reading hardware and software, according to Cognex. Codes can be obscured and difficult to read in many applications, because of size, quality, or printing method or because the codes are marred. Accuracy advantages have allowed image- based readers to rapidly replace laser scanners in a wide range of manufacturing and logistics applications, Cognex said. Cognex images show the wide variability of ID bar code and 2D code readings. One-dimensional (ID) code sym-bologies include UPC, PDF, and postal codes, and 2D code symbolo-gies include data matrix and QR Barcodes and 2D codes that can be used simultaneously.