複合1次元HMMを利用した手書き文字認識の研究
| Autor: | Nishimura, Hiromitsu, Tsutsumi, Masayoshi |
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| Jazyk: | japonština |
| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | 神奈川工科大学研究報告.B,理工学編. 25:63-68 |
| ISSN: | 0916-1902 |
| Popis: | application/pdf The purpose of our research is to improve the recognition rate of off-line character recognition systems using the HMM (Hidden Markov Model). Some 1-dimensional (1-D) HMM recognition systems have been proposed to increase the recognition rate of the conventional recognition systems. However, the 1-D HMM recognition systems have not achieved a sufficient recognition rate. On the other hand, 2-D HMM character recognition systems have been proposed to increase the representational power. However, the complex structure of 2-D HMM could not produce enough representational power with the actual small number of learning samples. To overcome these problems, we proposed a method using the multiple 1-dimensional HMM approach. In our experiment, the recognition rate of our multiple 1-D HMM method performed 97.1%, which was about 3% better than the conventional 1-D HMM systems, and as good as the 2-D HMM (HMM-MRF) system. Thus our method has better performance in practical use. |
| Databáze: | OpenAIRE |
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