Seven years ago I had the wildest ideas of creating photo realistic QR's. Sadly, I got pulled away to other projects with higher priority. The unanimous advice

Seven years ago I had the wildest ideas of creating photo realistic QR's. Sadly, I got pulled away to other projects with higher priority. The unanimous advice given to me at that time was to hold publishing so I could exploit it financially. Until today neither of both have changed. I'm not going to let it catch more dust and decided to open-source it under Affero license. Creating a photo realistic QR requires two steps. The first is to create a 93x93 dithered monochrome image. The dithering is calculated to preserve the mandatory QR framework/timing bits and generating the CRC. The second step is adding colour information as a 186x186 dithered layer. The colour palette is created using Spacial Colour Quantification which uses the 93x93 QR image as constraints on the available colour range. SCQ also stabilises palettes used for animations (a service not made available on the site). During the years the site has been prone to bitrot. I managed to recover most of the missing parts parts from backups. Most of the functionality has been restored and I'm still working with higher priority projects. [0] https://www.qrpicture.com https://www.qrpicture.com [1] https://github.com/xyzzy/qrpicture https://github.com/xyzzy/qrpicture