| 摘要 |
The present invention addresses the technical problem of providing a distinctive display format for machine-readable dot patterns which does not adversely affect the aesthetics of images displayed on a display device. A dot pattern is made machine readable by providing the periphery of a dot with a contrast control region and/or an anti-aliasing region which can be distinguished from the surrounding image. Thus enabled is the embedding of two-dimensional code on video or images on the screen of a display device, said code being both invisible to viewers and machine readable. A viewer can easily obtain information defined by the dot patterns by using the likes of a digital camera, video camera, mobile phone camera, or web camera to image the screen of the display device or to capture the content on the screen as data. |
