Translucent mark, translucent mark synthesis and detection method, and transparent mark, transparent mark synthesis and detection method

摘要

A method for generating a semi-transparent QR code by combining a QR code image and a normal color background image, and a QR code detection method for separating a QR code and a normal color image from an image obtained by photographing the semi-transparent QR code. Involved. The present invention adjusts the brightness or change width of a normal color background image, and then synthesizes a blue QR code thereon. The brightness change width of a blue QR code image is the same as that of the blue component image of the background image. It is characterized by being adjusted to be larger than the brightness change width. Further, the method of detecting a semi-transparent or transparent QR code is characterized in that the blue component image of an image obtained by photographing such a semi-transparent or transparent QR code is binarized and the QR code is detected. [Selection] Figure 1