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Misrecognised Characters

The number of misrecognised characters was the number of symbols that had not been recognised correctly once the stroke grouping was correct, whether it had been done by the automatic stroke grouper or corrected manually by the user.

Figure 6.10: Misrecognition and misgrouping rates.

Figure 6.10 shows the misrecognition rates that occurred for each participant in the user testing. An overall recognition rate of 77% was achieved for the 583 characters entered by all the test users. Such poor character recognition significantly lowers the usability of the system. For a serious user of the system, taking the time to train the character recogniser is necessary. Once properly trained, the character recogniser offers a recognition rate of over 95%.

Steve Smithies