MET: Media Embedded Target for Connecting Paper to Digital Media


Media Embedded Target, or MET, is an iconic mark printed in a blank margin of a page that indicates a media link is associated with a nearby region of the page. It guides the user to capture the region and thus retrieve the associated link through visual search within indexed content. The target also serves to separate page regions with media links from other regions of the page. The capture application on the cell phone displays a sight having the same shape as the target near the edge of a camera-view display. The user moves the phone to align the sight with the target printed on the page. Once the system detects correct sight-target alignment, the region in the camera view is captured and sent to the recognition engine which identifies the image and causes the associated media to be displayed on the phone. Since target and sight alignment defines a capture region, this approach saves storage by only indexing visual features in the predefined capture region, rather than indexing the entire page. Target-sight alignment assures that the indexed region is fully captured. We compare the use of MET for guiding capture with two standard methods: one that uses a logo to indicate that media content is available and text to define the capture region and another that explicitly indicates the capture region using a visible boundary mark.