Webscan Bar Code Blog

Welcome to Webscan’s Bar Code Blog. These posts will contain thoughts and comments on the progress of bar code standards and the activities of the standards committees, as well as topics of general interest with regard to developing applications for bar codes.

White Paper: QR Code Grading Parameters

A White Paper which gives technical detail on QR Code Grading Parameters is now available on our website at: QR Code Grading Parameters

White Paper: QR Code Primer

A QR Code Primer for people who are familiar with printing UPC Codes is now available on our website at: QR Code Introduction for UPC Printers

Dot Versions of Matrix Codes

Why Dot Symbols do not pass ISO/IEC 15415 and what can be done about it The process of grading a 2D matrix symbol according to ISO/IEC 15415 begins with the process of decoding it according to the symbology specification (reference decode algorithm). Actually, it begins by blurring and thresholding the image, and then running the [...]

QR Code Printing Advice

First let me reiterate my earlier advice to print QR Codes with an X dimension of at least .025 inch and achieve a print quality grade of 2.0/10/660 or better. Now, I want to discuss a more subtle point. The QR Code to the right, is typical of codes printed on packages or advertisements and [...]