Research Article
Handwriting Recognition in Free Space Using WIMU-Based Hand Motion Analysis
Table 2
Confusion matrix for handwriting recognition of 3D English lowercase letters.
| | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z |
| a | 98 | | | | | | | | | | | | | | | | | | | | 2 | | | | | | b | | 97 | | | | | | 3 | | | | | | | | | | | | | | | | | | | c | | | 98 | | 2 | | | | | | | | | | | | | | | | | | | | | | d | | | | 100 | | | | | | | | | | | | | | | | | | | | | | | e | | | 2 | | 98 | | | | | | | | | | | | | | | | | | | | | | f | | | | | | 96 | | | | | | | | | | | | | | 4 | | | | | | | g | | | | | | | 98 | | | 2 | | | | | | | | | | | | | | | | | h | | | | | | | | 98 | | | | | | 2 | | | | | | | | | | | | | i | | | | | | | | | 97 | | | 3 | | | | | | | | | | | | | | | j | | | | | | | | | | 100 | | | | | | | | | | | | | | | | | k | | | | | | | | | | | 100 | | | | | | | | | | | | | | | | l | | | | | | | | | 2 | | | 98 | | | | | | | | | | | | | | | m | | | | | | | | | | | | | 100 | | | | | | | | | | | | | | n | | | | | | | | | | | | | | 100 | | | | | | | | | | | | | o | | | 1 | | | | | | | | | | | | 99 | | | | | | | | | | | | p | | | | | | | | | | | | | | | | 100 | | | | | | | | | | | q | | | | | | | | | | | | | | | | | 100 | | | | | | | | | | r | | | | | | | | | | | | | | | | | | 97 | | | | 3 | | | | | s | | | 1 | | | | | | | | | | | | | | | | 99 | | | | | | | | t | | | | | 2 | | | | | | | | | | | | | | | 98 | | | | | | | u | 1 | | | | | | | | | | | | | | | | | | | | 99 | | | | | | v | | | | | | | | | | | | | | | | | | 1 | | | | 99 | | | | | w | | | | | | | | | | | | | | | | | | | | | | | 100 | | | | x | | | | | | | | | | | | | | | | | | | | | | | | 98 | 2 | | y | | | | | | | | | | | | | | | | | | | | | | | | 1 | 99 | | z | | | | | | | | | | | | | | | | | | | | | | | | | | 100 |
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