Open AccessSATS: Structure‐Aware Touch‐Based Scrolling
Author(s) -
Kim Dohyung,
Gweon Gahgene,
Lee Geehyuk
Publication year - 2016
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.16.2716.0017
Subject(s) - scrolling , computer science , macro , reading (process) , usability , human–computer interaction , interface (matter) , gesture , workload , information retrieval , multimedia , computer graphics (images) , computer vision , programming language , bubble , maximum bubble pressure method , parallel computing , political science , law , operating system
Non‐linear document navigation refers to the process of repeatedly reading a document at different levels to provide an overview, including selective reading to search for useful information within a document under time constraints. Currently, this function is not supported well by small‐screen tablets. In this study, we propose the concept of structure‐aware touch‐based scrolling (SATS), which allows structural document navigation using region‐dependent touch gestures for non‐sequential navigation within tablets or tablet‐sized e‐book readers. In SATS, the screen is divided into four vertical sections representing the different structural levels of a document, where dragging into the different sections allows navigating from the macro to micro levels. The implementation of a prototype is presented, as well as details of a comparative evaluation using typical non‐sequential navigation tasks performed under time constraints. The results showed that SATS obtained better performance, higher user satisfaction, and a lower usability workload compared with a conventional structural overview interface.