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Using the force feedback technology which has been used in video games for years, a prototype of an online Braille generator was developed for the visually impaired or blind user. Without any expensive devices, the prototype lets sightless persons use the information on the web by touching the output Braille displays on screen with a mouse. User studies(More)
Image indexing and retrieval systems mostly rely on the computation of similarity measures between images. This notion is ill-defined, generally based on simplistic assumptions that do not fit the actual context of use of image retrieval systems. This paper addresses two fundamental issues related to image similarity: checking whether the degree of(More)
With the increasing popularity of e-books and audiobooks provided by public libraries in the U.S., the demand does not seem to be met with sufficient supply, as many popular titles require months of waiting time. In this study, we collected data from the Wisconsin Public Library Consortium's digital libraries service once a day for more than two months for(More)
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