Nikhil Kalghatgi

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A digital lens is a user interface mechanism that is a potential solution to information mangement problems. We investigated the use of digital lensing applied to imagery analysis. Participants completed three different types of tasks (locate, follow, and compare) using a magnification lens with three different degrees of offset (aligned, adjacent, and(More)
Geospatial displays typically contain many data layers ranging in type and level of detail that often result in dense, occluded, and cluttered map displays. We investigated a localized, "detail on-demand" filtering strategy called semantic lensing that in certain situations provides a more efficient and desirable approach than global filtering for(More)
It is important for analysts to realize the connection between two distant nodes in a graph, which is not readily supported by existing space-filling techniques. We developed an experimental prototype, FocusTree, which displays graphs in two view modes: fisheye or tree. In fisheye view, selected nodes and the nodes connecting them remained full-sized while(More)
<lb>In today's fast-paced world it is becoming increasingly difficult to<lb>stay abreast of the public discourse. With the advent of hundreds<lb>of closed-captioned cable channels and internet-based channels<lb>such as news feeds, blogs, or email, knowing the "buzz" is a<lb>particular challenge. TextPool addresses this problem by quickly<lb>summarizing(More)
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