Research Article
Vision-Based Interfaces for Character-Based Text Entry: Comparison of Errors and Error Correction Properties of Eye Typing and Head Typing
Table 3
Length of the transcribed text and error-free performance.
| | Session 1 | Session 2 | Session 3 |
| Eye typing | Total phrase count | 384 | 501 | 513 | Total word count | 2170 | 2863 | 2937 | Average words per participant | 68 ± 5, SD = 30 | 93 ± 6, SD = 31.5 | 105 ± 8, SD = 40 | Error-free phrase count | 320 (83%) | 443 (88%) | 465 (90%) | Total error-free word count | 1794 | 2503 | 2666 | Average error-free words per participant | 56 ± 6, SD = 33 | 81 ± 6, SD = 35 | 95 ± 8, SD = 42 |
| Head typing | Total phrase count | 179 | 234 | 244 | Total word count | 1022 | 1322 | 1438 | Average words per participant | 33 ± 2, SD = 10 | 44 ± 2, SD = 10 | 48 ± 2, SD = 12 | Error-free phrase count | 163 (91%) | 219 (94%) | 229 (93%) | Total error-free word count | 928 | 1231 | 1338 | Average error-free words per participant | 30 ± 2, SD = 12 | 41 ± 2, SD = 11 | 45 ± 2.5, SD = 14 |
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