dc.citation.endPage |
138 |
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dc.citation.number |
2 |
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dc.citation.startPage |
131 |
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dc.citation.title |
INTERNATIONAL JOURNAL OF IMAGING SYSTEMS AND TECHNOLOGY |
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dc.citation.volume |
21 |
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dc.contributor.author |
Lee, Tae-Hoon |
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dc.contributor.author |
Kam, Tae-Eui |
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dc.contributor.author |
Kim, Sung-Phil |
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dc.date.accessioned |
2023-12-22T06:37:55Z |
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dc.date.available |
2023-12-22T06:37:55Z |
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dc.date.created |
2014-12-19 |
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dc.date.issued |
2011 |
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dc.description.abstract |
We propose a hierarchical stimulus presentation paradigm for a P300-based Hangul (Korean script) input system. A P300-based input system (or speller) is one of the most promising noninvasive brain-computer interface (BCI) applications based on its direct applicability in many computer programs. Although the previous row/column stimulus presentation paradigm has been well-suited to the English input, it may not be optimal for a Hangul input because Hangul has a distinct hierarchical structure. To overcome the limitation of the previous paradigms, we developed a new P300-based Hangul input system by taking the unique hierarchical structure of Hangul into account for creating a hierarchical stimulus presentation paradigm. By using the hierarchical structure, we can effectively reduce the window size of the interface without loss of classification accuracy. A performance comparison shows that the hierarchical paradigm exhibits higher classification accuracy than the row/column paradigm even with a smaller window size. Thus, the proposed hierarchical paradigm is more efficient to spell Hangul and will be more useful for BCI-based Hangul input for a text messenger, e-mail program, word processor and other similar applications. |
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dc.identifier.bibliographicCitation |
INTERNATIONAL JOURNAL OF IMAGING SYSTEMS AND TECHNOLOGY, v.21, no.2, pp.131 - 138 |
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dc.identifier.doi |
10.1002/ima.20282 |
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dc.identifier.issn |
0899-9457 |
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dc.identifier.uri |
https://scholarworks.unist.ac.kr/handle/201301/9554 |
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dc.identifier.wosid |
000291155100003 |
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dc.language |
영어 |
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dc.publisher |
WILEY-BLACKWELL |
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dc.title |
A Hierarchical Stimulus Presentation Paradigm for a P300-Based Hangul Speller |
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dc.type |
Article |
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dc.description.journalRegisteredClass |
scie |
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dc.description.journalRegisteredClass |
scopus |
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