Friday, April 13, 2012

research!rsc: QArt Codes

research!rsc: QArt Codes: "QR codes are encoded using Reed-Solomon error-correcting codes, so that a QR scanner does not have to see every pixel correctly in order to decode the content. The error correction makes it possible to introduce a few errors (fewer than the maximum that the algorithm can fix) in order to make an image. For example, in 2008, Duncan Robertson took a QR code for “” (left) and introduced errors in the form of a BBC logo (right):"