Measurement of Reading Characteristics of Multiplexed Image in QR Code

With the growth of the Internet in recent years, two-dimensional codes, such as a QR code has been widely used in the world. However, as this QR code is just a collective symbol of black and white dots, it does not have a good visual display. To improve this problem, an image or picture is superimposed to this two-dimensional code. This code can still be read without error, but this image is considered to be noisy, which reduces the reading ability. In order to avoid the reduction of the ability for reading the two-dimensional arrangement of code data, the location characteristics of the superimposed image should be studied. In this paper, taking into account the parameters of the error correction, the reading characteristics for different positions of the superimposed image are measured and the best position for it has been studied.