Abstract
The two dimensional code is widely used since it is useful for the mobile phone with the CCD camera. The QR code is well known as the two dimensional code. It consists of the monochrome modules, so it cannot contain large multimedia data. In this paper, we propose a multiplexed color QR code. It is a two dimensional code which consists of modules, colored by the assigned RGB value in the color space. The proposed method designs the color code by estimating the value-to-noise ratio in the RGB color space.