J
João Guerreiro
Researcher at Carnegie Mellon University
Publications - 53
Citations - 1148
João Guerreiro is an academic researcher from Carnegie Mellon University. The author has contributed to research in topics: Personally identifiable information & Touchscreen. The author has an hindex of 16, co-authored 52 publications receiving 775 citations. Previous affiliations of João Guerreiro include INESC-ID & Technical University of Lisbon.
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Proceedings ArticleDOI
How Context and User Behavior Affect Indoor Navigation Assistance for Blind People
TL;DR: This work performs a fine-grained analysis of user behavior during indoor assisted navigation, outlining different scenarios where user behavior (either with a white-cane or a guide-dog) is likely to cause navigation errors.
Proceedings ArticleDOI
Faster Text-to-Speeches: Enhancing Blind People's Information Scanning with Faster Concurrent Speech
João Guerreiro,Daniel Gonçalves +1 more
TL;DR: An experiment with 30 visually impaired participants is presented, where results suggest that the best compromise between efficiency and the ability to understand each sentence is the use of Two-Voices with a rate of 1.75*default-rate.
Proceedings ArticleDOI
Blind People Interacting with Large Touch Surfaces: Strategies for One-handed and Two-handed Exploration
TL;DR: This work investigates the exploration strategies applied by blind users when interacting with a tabletop and identifies six basic strategies that were commonly adopted and should be considered in future designs of accessible large touch interfaces.
Proceedings ArticleDOI
B#: chord-based correction for multitouch braille input
TL;DR: B# is presented, a novel correction system for multitouch Braille input that uses chords as the atomic unit of information rather than characters, and outperforms a popular spellchecker by providing correct suggestions for 72% of incorrect words.
Proceedings ArticleDOI
The Present and Future of Museum Accessibility for People with Visual Impairments
TL;DR: This paper surveyed 19 PVI to understand their opinions and expectations about visiting museums independently, as well as the requirements of user interfaces to support it, and increases the knowledge about the previous experiences, motivations and accessibility issues of PVI in museums.