The design and implementation of a portable meeting recorder is presented. Composed of an omni-directional video camera with four-channel audio capture, the system saves a view of all the activity in a meeting and the directions from which people spoke. Subsequent analysis computes metadata that includes video activity analysis of the compressed data stream and audio processing that helps locate events that occurred during the meeting. Automatic calculation of the room in which the meeting occurred allows for efficient navigation of a collection of recorded meetings. A user interface is populated from the metadata description to allow for simple browsing and location of significant events.
A new method for augmenting paper documents with electronic information is described that does not modify the format of the paper document in any way. Applicable to both commercially printed documents as well as documents that are output from PC's, the technique we call Paper-Based Augmented Reality substantially improves the utility of paper. We describe the recognition technology that makes this possible as well as several applications. An implementation on a camera phone is discussed that lets users retrieve data and access links from paper documents to electronic data. Recognition is performed at 4 frames per second on a Treo 700w and support is provided for several user applications, including "clickable paper" -printed web pages whose appearance is unchanged but that can be navigated with a camera phone.
We introduce query-free information retrieval, a paradigm in which queries are constructed autonomously and information relevant to a user is offered without explicit request. Query-free methods offer an apparently new approach for integrating knowledge-based applications with legacy databases. We describe a fielded system, FIXIT, which integrates an expert diagnostic system with a pre-existing fulltext database of maintenance manuals. The reported results suggest that queryfree information retrieval can liberate the user from burdensome information retrieval activities while incurring only modest system development costs and minimal run-time costs.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.