QR code is a two-dimensional barcode. A standard QR code can contain some information, but it is quite difficult to embed a different element into the
QR code benefits
The advantages of QR codes are:
Information density. I.e. the information is arranged very compactly.
Orientation independency. Each QR code contains 3 markers at corners that allow a reader to find the orientation.
Error correction. The information stored in a QR code is slightly duplicated (from 5 to 30%). So even if a QR code was damaged all the original information can be restored.
Any type of stored information. The list of available formats is limited only by those that are supported by a reader.
How to make a styled QR code?
A regular QR code looks like this:
But this QR code can be styled, i.e. we can apply a background
QR code stylisation algorithm
Let’s describe the algorithm that allows applying stylisation to a QR code generated in a standard way. To develop a styled QR code generator we took a standard QR code generator that creates regular QR codes as shown above.
QR code content image
QR code content mask
Foreground which includes corner markers and overlay images.
The QR code generator creates all four layers separately and then combines them to make a complete QR code. At first, we create a foreground image:
After that we create a QR code content image:
A QR code mask image is just a generated QR code without corner markers where each block is replaced by a mask image, e.g.:
So as a result, we receive the following mask:
After that we combine the mask and the QR code content image we receive the following image:
The combination of the previous image and the foreground elements gives an almost complete QR code:
Only one step remains: to add a background image. We just draw a background in a separate image:
And combine the last two images:
Now we have a completely styled QR code. As you can see this algorithm allows you to apply many different styles and customisations using simple operations with separate layers and to receive a completely styled QR code after combining these layers. By using this algorithm it is possible to create QR codes that can be easily integrated into any design.